[continued from previous message]

Aug 21 - Total Solar Eclipse (Visible from United States)
Aug 21 - Comet C/2015 VL62 Closest Approach To Earth (1.742 AU)
Aug 21 - Comet C/2015 VL62 At Opposition (1.742 AU)
Aug 21 - Asteroid 1850 Kohoutek Closest Approach To Earth (1.135 AU)
Aug 21 - Asteroid 1814 Bach Closest Approach To Earth (1.337 AU)
* Aug 21 - Asteroid 2865 Laurel Closest Approach To Earth (1.496 AU)
Aug 21 - Asteroid 15332 CERN Closest Approach To Earth (1.565 AU)
Aug 21 - Asteroid 6639 Marchis Closest Approach To Earth (1.840 AU)
* Aug 21 - Asteroid 78577 JPL Closest Approach To Earth (2.003 AU)
Aug 21 - 45th Anniversary (1972), Copernicus Launch
Aug 22 - Comet 5D/Brorsen Closest Approach To Earth (1.120 AU)
Aug 22 - Asteroid 3 Juno Occults 2UCAC 28762234 (12.4 Magnitude Star)
* Aug 22 - Asteroid 5540 Smirnova Closest Approach To Earth (0.821 AU)
Aug 22 - Asteroid 804 Hispania Closest Approach To Earth (1.437 AU)
Aug 22 - Asteroid 1791 Patsayev Closest Approach To Earth (1.509 AU)
Aug 22 - Asteroid 8423 Macao Closest Approach To Earth (1.627 AU)
Aug 22 - Asteroid 289586 Shackleton Closest Approach To Earth (1.643 AU)
Aug 22 - Raymonde de Laroche's 135th Birthday (1882)
Aug 23 - Comet 49P/Arend-Rigaux At Opposition (2.273 AU)
Aug 23 - Comet 247P/LINEAR At Opposition (3.161 AU)
Aug 23 - Comet P/2016 BA14 (PANSTARRS) At Opposition (3.283 AU)
Aug 23 - Apollo Asteroid 54509 YORP Closest Approach To Earth (0.652 AU)
Aug 23 - Lubor Kresak's 90th Birthday (1927)
Aug 24 - Iridium Next 21-30 Falcon 9 Launch
Aug 24 - Comet 73P-BC/Schwassmann-Wachmann Closest Approach To Earth (0.441 AU)
Aug 24 - Comet 339P/Gibbs At Opposition (2.742 AU)
Aug 24 - Comet P/2011 W2 (Rinner) At Opposition (3.115 AU)
Aug 24 - Comet 252P/LINEAR At Opposition (3.308 AU)
Aug 24 - Comet P/2016 A7 (PANSTARRS) At Opposition (3.550 AU)
Aug 24 - Asteroid 2531 Cambridge Closest Approach To Earth (2.176 AU)
Aug 24 - Asteroid 88705 Potato Closest Approach To Earth (2.212 AU)
Aug 24 - Asteroid 51827 Laurelclark Closest Approach To Earth (2.309 AU)
Aug 25 - Northern Iota Aquarids Meteor Shower Peak
Aug 25 - Apollo Asteroid 2005 QQ87 Near-Earth Flyby (0.087 AU)
Aug 25 - Asteroid 2598 Merlin Closest Approach To Earth (1.651 AU)
Aug 25 - Asteroid 2305 King Closest Approach To Earth (1.731 AU)
Aug 25 - Asteroid 2742 Gibson Closest Approach To Earth (1.851 AU)
Aug 25 - Asteroid 18728 Grammier Closest Approach To Earth (2.123 AU)
Aug 25 - 20th Anniversary (1997), Advanced Composition Explorer (ACE) Launch
Aug 26 - Cassini, Distant Flyby of Titan
* Aug 26 - Asteroid 5945 Roachapproach Closest Approach To Earth (0.908 AU)
Aug 27 - Cassini, Distant Flyby of Janus, Daphnis, Prometheus, Epimetheus, Pandora & Pan
* Aug 27 - Comet 349P/Lemmon Perihelion (2.496 AU)
Aug 27 - Comet C/2016 P4 (PANSTARRS) Closest Approach To Earth (5.316 AU)
Aug 27 - Asteroid 51824 Mikeanderson Closest Approach To Earth (1.660 AU)
* Aug 28 - Asteroid 2710 Veverka Closest Approach To Earth (1.702 AU)
Aug 27 - Asteroid 9025 Polansky Closest Approach To Earth (1.756 AU)
Aug 27 - Asteroid 508 Princetonia Closest Approach To Earth (2.188 AU)
Aug 27 - Kuiper Belt Object 225088 (2007 OR10) At Opposition (86.829 AU)
Aug 27 - 55th Anniversary (1962), Mariner 2 Launch
Aug 28 - Cassini, Distant Flyby of Titan
Aug 28 - Comet C/2015 VL62 Perihelion (2.720 AU)
Aug 28 - Amor Asteroid 2015 RQ35 Near-Earth Flyby (0.098 AU)
* Aug 28 - Amor Asteroid 2202 Pele Closest Approach To Earth (0.665 AU)
Aug 28 - Asteroid 29470 Higgs Closest Approach To Earth (1.573 AU)
* Aug 28 - Asteroid 2710 Veverka Closest Approach To Earth (1.702 AU)
Aug 28 - Asteroid 293 Brasilia Closest Approach To Earth (2.207 AU)
Aug 28 - Kuiper Belt Object 2004 NT33 At Opposition (38.173 AU)
Aug 28 - George Alcock's 105th Birthday (1912)
Aug 29 - Comet 236P/LINEAR Closest Approach To Earth (1.074 AU)
* Aug 29 - Apollo Asteroid 3752 Camillo Closest Approach To Earth (0.557 AU)
Aug 29 - Asteroid 14094 Garneau Closest Approach To Earth (1.764 AU)
Aug 29 - Centaur Object 7066 Nessus At Opposition (26.750 AU)
Aug 29 - Kuiper Belt Object 307982 (2004 PG115) At Opposition (37.184 AU)
Aug 30 - Aten Asteroid 2100 Ra-Shalom Closest Approach To Earth (1.211 AU)
* Aug 30 - Asteroid 2575 Bulgaria Closest Approach To Earth (1.215 AU)
Aug 30 - Asteroid 87 Sylvia (2 Moons) Closest Approach To Earth (2.176 AU)
Aug 30 - 25th Anniversary (1992), David Jewitt's & Jane Luu's Discovery of the 1st Kuiper Belt Object (1992 QB1)
* Aug 31 - Intelsat 37E/BSAT 4A Ariane 5 Launch
Aug 31 - Comet P/2008 T4 (Hill) At Opposition (2.126 AU)
Aug 31 - Dwarf Planet Ceres Occults TYC 1910-00447-1 (7.9 Magnitude Star)
Aug 31 - Asteroid 5040 Rabinowitz Closest Approach To Earth (0.889 AU)
Aug 31 - Asteroid 2864 Soderblom Closest Approach To Earth (2.137 AU)
Aug 31 - Centaur Object 944 Hidalgo At Opposition (3.287 AU)
Aug 31 - Kuiper Belt Object 2003 QX113 At Opposition (59.043 AU)
Aug 31 - 25th Anniversary (1992), Theodore Von Karman Stamp Release
Aug 31 - 55th Anniversary (1962), John F. Kennedy Signs Communications Satellite Act
Aug 31 - 85th Anniversary (1932), 1st Photo Showing Moon's Shadow on the Earth during Solar Ecipse Taken By Capt Albert Stevens
Aug 31 - 175th Anniverdary (1842), US Naval Observatory Authorized by Act of Congress
Aug 31 - Edouard Stephan's 180th Birthday (1837)
Aug 31 - James Ferguson's 220th Birthday (1797)

September 2017
Sep ?? - GPS 3-1 Delta 4 Launch
Sep ?? - AngoSat 1/Energia 100 Angara-A5/DM-03 Launch
Sep ?? - SkySat 8-13/COPPER 2/CPOD A & B/MinXSS 2/RANGE A & B Minotaur-C-XL-3210 Launch
Sep ?? - GSAT-6A GSLV Mk II Launch
Sep ?? - BeiDou-3 (M3 & M4) CZ-3C/YZ-1 Launch
* Sep ?? - ORS 5 Minotaur 4 Launch
Sep 01 - Comet 73P-BL/Schwassmann-Wachmann Closest Approach To Earth (1.044 AU)
* Sep 01 - Comet 145P/Shoemaker-Levy Perihelion (1.904 AU)
Sep 01 - Comet 100P/Hartley Closest Approach To Earth (2.846 AU)
Sep 01 - Amor Asteroid 3122 Florence Near-Earth Flyby (0.047 AU)
Sep 01 - Asteroid 7507 Israel Closest Approach To Earth (0.889 AU)
* Sep 01 - Asteroid 1159 Granada Closest Approach To Earth (1.260 AU)
Sep 01 - Plutino 175113 (2004 PF115) At Opposition (40.557 AU)
Sep 01 - Kuiper Belt Object 120178 (2003 OP32) At Opposition (41.265 AU)
Sep 01 - 20th Anniversary (1997), Worden Meteorite (Hit Garage & Car in Michigan)
Sep 01 - 35th Anniversary (1982), Founding of the United States Air Force Space Command
Sep 01 - Dirk Brouwer's 115th Birthday (1902)
Sep 01 - 135th Anniversary (1882), Discovery of the Great Comet of 1882
Sep 01 - Francis Aston's 140th Birthday (1877)
Sep 01 - Rado von Kovesligethy's 155th Birthday (1862)
Sep 02 - Cassini, Distant Flyby of Daphnis & Atlas
Sep 02 - Mercury Passes 4.1 Degrees from Mars
Sep 02 - Comet 73P-AS/Schwassmann-Wachmann Closest Approach To Earth (0.596 AU)
Sep 02 - Apollo Asteroid 101955 Bennu Closest Approach To Earth (0.336 AU)
Sep 02 - Asteroid 55555 DNA Closest Approach To Earth (1.283 AU)
Sep 02 - Asteroid 5190 Fry Closest Approach To Earth (2.411 AU)
Sep 02 - 50th Anniversary (1967), Wiluna Meteorite Shower in Australia
Sep 02 - Frederick Soddy's 140th Birthday (1877)
Sep 02 - 265th Anniversary (1752), British Empire Adopts Gregorian Calendar
Sep 03 - Comet P/2001 T3 (NEAT) At Opposition (2.437 AU)
Sep 03 - Asteroid 9258 Johnpauljones Closest Approach To Earth (0.899 AU)
Sep 03 - Asteroid 241 Germania Closest Approach To Earth (1.739 AU)
Sep 03 - Asteroid 218998 Navi Closest Approach To Earth (1.746 AU)
Sep 03 - Asteroid 73511 Lovas Closest Approach To Earth (1.983 AU)
Sep 03 - Apollo Asteroid 217628 Lugh Closest Approach To Earth (2.875 AU)
Sep 03 - 15th Anniversary (2003), Discovery of J002E3 (Apollo 12 Rocket Stage)
Sep 03 - Gerry Neugebauer's 85th Birthday (1932)
Sep 03 - Ralph Copeland's 180th Birthday (1837)
Sep 04 - Asteroid 3354 McNair Closest Approach To Earth (1.185 AU)
Sep 04 - Apollo Asteroid 11885 Summanus Closest Approach To Earth (1.440 AU)
Sep 04 - Asteroid 8958 Stargazer Closest Approach To Earth (1.491 AU)
Sep 04 - Asteroid 12382 Niagara Falls Closest Approach To Earth (1.698 AU)
Sep 04 - 5th Anniversary (2012), Dawn, Vesta Departure
Sep 04 - 55th Anniversary (1962), 1st Rocket Maneuver in Deep Space (Mariner 2)
Sep 04 - Oscar Monnig's 115th Birthday (1902)
Sep 05 - Neptune At Opposition
Sep 05 - Comet C/2017 E4 (Lovejoy) Closest Approach To Earth (2.294 AU)
Sep 05 - Comet 3D/Biela Closest Approach To Earth (2.824 AU)
Sep 05 - Apollo Asteroid 5786 Talos Closest Approach To Earth (0.956 AU)
Sep 05 - Asteroid 1095 Tulipa Closest Approach To Earth (2.085 AU)
Sep 05 - 40th Anniversary (1977), Voyager 1 Launch
Sep 06 - Moon Occults Neptune
Sep 06 - Comet P/2016 J1-A (PANSTARRS) Closest Approach To Earth (2.181 AU)
Sep 06 - Comet P/2016 J1-B (PANSTARRS) Closest Approach To Earth (2.181 AU)
Sep 06 - Comet C/2016 T3 (PANSTARRS) Perihelion (2.650 AU)
Sep 06 - Comet C/2016 P4 (PANSTARRS) At Opposition (5.330 AU)
Sep 06 - Asteroid 18125 Brianwilson Closest Approach To Earth (1.724 AU)
Sep 06 - Kuiper Belt Object 145452 (2005 RN43) At Opposition (39.622 AU)
Sep 06 - Edward Appleton's 125th Birthday (1892)
Sep 07 - Comet 298P/Christensen At Opposition (3.936 AU)
Sep 07 - Asteroid 3259 Brownlee Closest Approach To Earth (2.532 AU)
Sep 07 - Centaur Object 37117 Narcissus At Opposition (3.561 AU)
Sep 07 - Kuiper Belt Object 2010 RF43 At Opposition (52.546 AU)
Sep 07 - 10th Anniversary (2007), Guadalajara Meteorite Fall (Hit House in Mexico)
Sep 08 - Comet 73P-AQ/Schwassmann-Wachmann Closest Approach To Earth (1.138 AU)
Sep 08 - Comet 14P/Wolf At Opposition (1.864 AU)
Sep 08 - Asteroid 3594 Scotti Closest Approach To Earth (1.598 AU)
Sep 08 - Asteroid 270553 Loureed Closest Approach To Earth (1.740 AU)
Sep 08 - Asteroid 296907 Alexander Closest Approach To Earth (1.919 AU)
Sep 08 - 25th Anniversary (1992), Geotail, Moon Flyby
Sep 08 - 50th Anniversary (1967), Surveyor 5 Launch (Moon Lander)
Sep 08 - Arthur Wahl's 100th Birthday (1917)
Sep 08 - Hans Fichtner's 100th Birthday (1917)
Sep 09 - Cassini, Distant Flyby of Daphnis, Atlas & Prometheus
Sep 09 - Comet 73P-AR/Schwassmann-Wachmann Closest Approach To Earth (1.150 AU)
Sep 09 - Comet 73P-AG/Schwassmann-Wachmann Closest Approach To Earth (1.152 AU)
* Sep 09 - Comet C/2014 B1 (Schwartz) Perihelion (9.558 AU)
Sep 09 - Asteroid 6925 Susumu Occults HIP 21673 (5.1 Magnitude Star)
Sep 09 - Asteroid 904 Rockefellia Occults HIP 30602 (6.4 Magnitude Star)
Sep 09 - Apollo Asteroid 2015 FO124 Near-Earth Flyby (0.070 AU)
Sep 09 - Asteroid 19383 Rolling Stones Closest Approach To Earth (0.965 AU)
Sep 09 - Asteroid 727 Nipponia Closest Approach To Earth (1.430 AU)
Sep 09 - Asteroid 876 Scott Closest Approach To Earth (1.674 AU)
Sep 09 - Asteroid 1604 Tombaugh Closest Approach To Earth (1.718 AU)
Sep 09 - 35th Anniversary (1982), Conestoga I Launch (1st Private Rocket)
Sep 09 - 125th Anniversary (1892), Edward Barnard's Discovery of Jupiter Moon Amalthea
Sep 09 - John Poynting's 165th Birthday (1852)
Sep 09 - 210th Anniversary (1807), Parisi's Discovery of The Great Comet of 1807
Sep 10 - Comet 73P-AP/Schwassmann-Wachmann Closest Approach To Earth (0.730 AU)
Sep 10 - Comet P/2013 EW90 (Tenagra) At Opposition (3.829 AU)
Sep 10 - Asteroid 3124 Kansas Closest Approach To Earth (1.532 AU)
Sep 10 - Asteroid 8629 Chucklorre Closest Approach To Earth (1.629 AU)
Sep 10 - Asteroid 3728 IRAS Closest Approach To Earth (1.693 AU)
Sep 10 - Asteroid 8103 Fermi Closest Approach To Earth (1.985 AU)
Sep 10 - Arthur Compton's 125th Birthday (1892)
Sep 10 - James Keeler's 160th Birthday (1857)
Sep 11 - Cassini, Distant Flyby of Titan
Sep 11 - Apollo Asteroid 2014 RC Near-Earth Flyby (0.039 AU)
Sep 11 - Asteroid 21619 Johnhopkins Closest Approach To Earth (1.390 AU)
Sep 11 - Asteroid 7225 Huntress Closest Approach To Earth (1.622 AU)
Sep 11 - 20th Anniversary (1997), Mars Global Surveyor, Mars Orbit Insertion
Sep 11 - Robert Crippen's 80th Birthday (1937)
Sep 11 - James Jeans' 140th Birthday (1877)
Sep 12 - Cygnus CRS OA-8E Antares 230 Launch (International Space Station)
Sep 12 - Mercury At Its Greatest Western Elongation (18 Degrees)
Sep 12 - Moon Occults Aldebaran
Sep 12 - Comet 73P-P/Schwassmann-Wachmann Closest Approach To Earth (1.198 AU)
Sep 12 - Comet 240P/NEAT At Opposition (1.925 AU)
Sep 12 - Comet 49P/Arend-Rigaux Closest Approach To Earth (2.216 AU)
Sep 12 - Comet 14P/Wolf Closest Approach To Earth (1.862 AU)
Sep 12 - Asteroid 2653 Principia Closest Approach To Earth (1.624 AU)
Sep 12 - 25th Anniversary (1992), STS-47 Launch (Space Shuttle Endeavour, Spacelab-J)
Sep 12 - 25th Anniversary (1992), 1st African-American Woman in Space (Mae Jemison)
Sep 12 - 55th Anniversary (1962), John F. Kennedy's Moon Speech
Sep 12 - Robert Farquhar's 85th Birthday (1932)
Sep 13 - Soyuz MS-6 Soyuz-FG Launch (International Space Station 52S)
Sep 13 - Comet P/2008 T4 (Hill) Closest Approach To Earth (2.104 AU)
Sep 13 - Comet 239P/LINEAR At Opposition (3.321 AU)
Sep 13 - Asteroid 39566 Carllewis Closest Approach To Earth (0.829 AU)
Sep 13 - Asteroid 28078 Mauricehilleman Closest Approach To Earth (1.136 AU)
Sep 13 - Asteroid 11020 Orwell Closest Approach To Earth (1.838 AU)
Sep 13 - 10th Anniversary (2007), Kaguya (Selene 1) Launch (Japan Moon Orbiter)
Sep 13 - Horace Babcock's 105th Birthday (1912)
Sep 14 - Apollo Asteroid 310560 (2001 QL142) Near-Earth Flyby (0.058 AU)
Sep 14 - Asteroid 6032 Nobel Closest Approach To Earth (0.871 AU)
Sep 14 - Asteroid 14764 Kilauea Closest Approach To Earth (1.102 AU)
Sep 15 - Cassini, Distant Flyby of Janus, Pan, Pandora & Epimetheus
Sep 15 - Cassini, Saturn Impact
Sep 15 - Comet 73P-AC/Schwassmann-Wachmann Closest Approach To Earth (1.251 AU)
Sep 15 - Comet P/2016 J1-A (PANSTARRS) At Opposition (2.192 AU)
Sep 15 - Comet P/2016 J1-B (PANSTARRS) At Opposition (2.192 AU)
Sep 15 - Comet 100P/Hartley At Opposition (2.874 AU)
Sep 15 - Asteroid 6030 Zolensky Closest Approach To Earth (1.966 AU)
Sep 15 - Asteroid 16522 Tell Closest Approach To Earth (2.088 AU)
Sep 15 - 10th Anniversary (2007), Carancas Meteorite Fall in Peru (Created Crater)
Sep 16 - International Day for the Preservation of the Ozone Layer
Sep 16 - Mercury Passes 0.05 Degrees from Mars
Sep 16 - Comet P/2010 H2 (Vales) Perihelion (3.097 AU)
Sep 16 - Aten Asteroid 2014 RX22 Near-Earth Flyby (0.080 AU)
Sep 16 - Asteroid 7336 Saunders Closest Approach To Earth (0.237 AU)
Sep 17 - Asteroid 18458 Caesar Closest Approach To Earth (1.535 AU)
Sep 17 - Asteroid 449 Hamburga Closest Approach To Earth (1.862 AU)
Sep 17 - Asteroid 15614 Pillinger Closest Approach To Earth (1.910 AU)
Sep 17 - 20th Anniversary (1997), Galileo, Callisto 10 Flyby
Sep 17 - Petr Pravec's 50th Birthday (1967)
Sep 17 - Konstantin Tsiolkovsky's 160th Birthday (1857)
Sep 18 - Moon Occults Venus
Sep 18 - Moon Occults Mercury
Sep 18 - Moon Occults Mars
Sep 18 - Moon Occults Regulus
Sep 18 - Comet 60P/Tsuchinshan At Opposition (2.766 AU)
Sep 18 - Asteroid 3917 Franz Schubert Closest Approach To Earth (1.346 AU)
Sep 18 - Asteroid 12790 Cernan Closest Approach To Earth (1.485 AU)
Sep 18 - Asteroid 19204 Joshuatree Closest Approach To Earth (1.526 AU)
Sep 18 - Asteroid 73079 Davidbaltimore Closest Approach To Earth (1.530 AU)
Sep 18 - Asteroid 9523 Torino Closest Approach To Earth (1.764 AU)
Sep 18 - Asteroid 2688 Halley Closest Approach To Earth (2.009 AU)
Sep 18 - Asteroid 15417 Babylon Closest Approach To Earth (2.918 AU)
Sep 18 - Edwin McMillan's 110th Birthday (1907)
Sep 18 - Adrien-Marie Legendre's 265th Birthday (1752)
Sep 19 - Comet 5D/Brorsen Perihelion (0.529 AU)
Sep 19 - Comet 95P/Chiron At Opposition (17.579 AU)
Sep 19 - Asteroid 4444 Escher Closest Approach To Earth (1.142 AU)
Sep 19 - Asteroid 3763 Quianxuesen Closest Approach To Earth (1.478 AU)
Sep 19 - Asteroid 4037 Ikeya Closest Approach To Earth (1.746 AU)
Sep 19 - Yoshio Kushida's 60th Birthday (1957)
Sep 19 - Guy Consolmagno's 65th Birthday (1952)
Sep 20 - Comet C/2016 N4 (MASTER) Perihelion (3.228 AU)
Sep 20 - Apollo Asteroid 2008 CK70 Near-Earth Flyby (0.058 AU)
Sep 20 - Asteroid 1134 Kepler Closest Approach To Earth (0.506 AU)
Sep 20 - Asteroid 3341 Hartmann Closest Approach To Earth (1.335 AU)
Sep 20 - Asteroid 4148 McCartney Closest Approach To Earth (1.462 AU)
Sep 20 - Asteroid 31319 Vespucci Closest Approach To Earth (2.394 AU)
Sep 21 - Joint Polar Satellite System 1 (JPSS 1)/Buccaneer RMM/MiRaTA/EagleSat/CP 7 (DAVE)/Fox 1B (RadFxSat)/MakerSat 0 Delta 2 Launch
* Sep 21 - Sentinel 5P Rokot/Briz-KM Launch
Sep 21 - Comet 73P-X/Schwassmann-Wachmann Closest Approach To Earth (1.375 AU)
Sep 21 - Comet 73P-L/Schwassmann-Wachmann Closest Approach To Earth (1.379 AU)
Sep 21 - Comet 73P-AN/Schwassmann-Wachmann Closest Approach To Earth (1.381 AU)
Sep 21 - Comet 73P-AH/Schwassmann-Wachmann Closest Approach To Earth (1.398 AU)
Sep 21 - Apollo Asteroid 2015 FC341 Near-Earth Flyby (0.082 AU)
Sep 21 - Atira Asteroid 434326 (2004 JG6) Closest Approach To Earth (0.696 AU)
Sep 21 - Atira Asteroid 164294 (2004 XZ130) Closest Approach To Earth (1.246 AU)
Sep 21 - Asteroid 8626 Melissarauch Closest Approach To Earth (2.030 AU)
Sep 21 - Asteroid 8624 Kaleycuoco Closest Approach To Earth (2.201 AU)
Sep 21 - Asteroid 52422 LPL Closest Approach To Earth (2.631 AU)
Sep 22 - Autumnal Equinox, 20:02 UT
Sep 22 - Apollo Asteroid 2015 TC24 Near-Earth Flyby (0.070 AU)
Sep 22 - Asteroid 3749 Balam (2 Moons) Closest Approach To Earth (1.311 AU)
Sep 23 - Comet C/2015 ER61 (PANSTARRS) Closest Approach To Earth (1.663 AU)
* Sep 23 - Comet 352P/Skiff Closest Approach To Earth (1.679 AU)
Sep 23 - Comet P/2001 T3 (NEAT) Closest Approach To Earth (2.387 AU)
Sep 23 - Asteroid 85185 Lederman Closest Approach To Earth (0.895 AU)
Sep 23 - Kuiper Belt Object 2010 RE64 At Opposition (51.283 AU)
Sep 23 - 55th Anniversary (1962), "The Jetsons" TV Debut
Sep 24 - Comet 73P-Z/Schwassmann-Wachmann Closest Approach To Earth (1.459 AU)
Sep 24 - Comet 73P-AO/Schwassmann-Wachmann Closest Approach To Earth (1.463 AU)
Sep 24 - Comet 237P/LINEAR Closest Approach To Earth (2.208 AU)
Sep 24 - Comet 25D/Neujmin At Opposition (3.564 AU)
Sep 24 - Asteroid 13752 Grantstokes Closest Approach To Earth (1.088 AU)
Sep 24 - Asteroid 3174 Alcock Closest Approach To Earth (1.956 AU)
Sep 24 - Kuiper Belt Object 120347 Salacia At Opposition (43.815 AU)
Sep 24 - 165th Anniversary (1852), Henri Giffard Makes 1st Powered and Controlled Flight
Sep 25 - Spektr-RG Zenit-3F Launch
Sep 25 - Comet 213P/Van Ness Perihelion (1.983 AU)
Sep 25 - Comet 213P-B/Van Ness Perihelion (1.983 AU)
Sep 25 - Comet 89P/Russell Closest Approach To Earth (1.988 AU)
Sep 25 - Comet P/2015 M2 (PANSTARRS) Closest Approach To Earth (5.308 AU)
Sep 25 - Asteroid 10797 Guatemala Closest Approach To Earth (1.539 AU)
Sep 25 - Asteroid 2266 Tchaikovsky Closest Approach To Earth (2.195 AU)
Sep 25 - 20th Anniversary (1997), STS-86 Launch (Space Shuttle, Atlantis, Mir Space Station)
Sep 25 - 25th Anniversary (1992), Mars Observer Launch
Sep 26 - Comet 73P-R/Schwassmann-Wachmann Closest Approach To Earth (1.500 AU)
Sep 26 - Comet C/2016 Q4 (Kowalski) Closest Approach To Earth (6.117 AU)
Sep 26 - Comet C/2016 Q4 (Kowalski) At Opposition (6.117 AU)
Sep 26 - Apollo Asteroid 5189 (1990 UQ) Near-Earth Flyby (0.061 AU)
Sep 26 - Amor Asteroid 3757 Anagolay Closest Approach To Earth (1.094 AU)
Sep 26 - Harrison Brown's 100th Birthday (1917)
Sep 27 - Comet C/2017 E1 (Borisov) Closest Approach To Earth (2.141 AU)
Sep 27 - Comet 73P-M/Schwassmann-Wachmann Closest Approach To Earth (1.528 AU)
Sep 27 - Comet 73P-AD/Schwassmann-Wachmann Closest Approach To Earth (1.535 AU)
Sep 27 - Dwarf Planet Ceres Occults 2UCAC 40015030 (12.2 Magnitude Star)
Sep 27 - Apollo Asteroid 469219 (2016 HO3) Closest Approach To Earth (0.158 AU)
Sep 27 - Asteroid 90022 Apache Point Closest Approach To Earth (1.573 AU)
Sep 27 - Centaur Object 2015 JH1 At Opposition (4.699 AU)
Sep 27 - Kuiper Belt Object 308933 (2006 SQ372) At Opposition (26.842 AU)
Sep 27 - 10th Anniversary (2007), Dawn Launch (Asteroid Orbiter Mission)
Sep 27 - 20th Anniversary (1997), Last Transmission From Mars Pathfinder
Sep 28 - Comet 73P-E/Schwassmann-Wachmann Closest Approach To Earth (1.542 AU)
Sep 28 - Apollo Asteroid 2017 GM6 Near-Earth Flyby (0.080 AU)
Sep 28 - Asteroid 71885 Denning Closest Approach To Earth (1.273 AU)
Sep 28 - Asteroid 15783 Briancox Closest Approach To Earth (2.027 AU)
Sep 28 - 55th Anniversary (1962), Alouette 1 Launch (Canada's 1st Satellite)
Sep 29 - Comet 73P-BS/Schwassmann-Wachmann At Opposition (0.717 AU)
Sep 29 - Comet 73P-H/Schwassmann-Wachmann Closest Approach To Earth (1.589 AU)
Sep 29 - Comet P/2010 D1 (WISE) At Opposition (1.738 AU)
Sep 29 - Comet P/2006 D1 (Hill) At Opposition (3.246 AU)
Sep 29 - Comet 299P/Catalina-PANSTARRS At Opposition (3.950 AU)
Sep 29 - Comet P/2015 M2 (PANSTARRS) At Opposition (5.311 AU)
Sep 29 - Apollo Asteroid 1989 VB Near-Earth Flyby (0.020 AU)
Sep 29 - Asteroid 4716 Urey Closest Approach To Earth (2.339 AU)
Sep 29 - Plutino 469372 (2001 QF298) At Opposition (42.446 AU)
Sep 29 - 40th Anniversary (1977), Salyut 6 Space Station Launch
Sep 29 - Plutino 469372 (2001 QF298) At Opposition (42.446 AU)
Sep 30 - Astronomy Day
Sep 30 - STP-2 Falcon Heavy Launch
Sep 30 - SES-14/GOLD Falcon 9 Launch
Sep 30 - Comet 263P/Gibbs Perihelion (1.263 AU)
Sep 30 - Comet 73P-B/Schwassmann-Wachmann Closest Approach To Earth (1.596 AU)
Sep 30 - Comet 73P-K/Schwassmann-Wachmann Closest Approach To Earth (1.598 AU)
Sep 30 - Comet 73P-G/Schwassmann-Wachmann Closest Approach To Earth (1.615 AU)
Sep 30 - Comet 73P/Schwassmann-Wachmann Closest Approach To Earth (1.619 AU)
Sep 30 - Comet 73P-C/Schwassmann-Wachmann Closest Approach To Earth (1.620 AU)
Sep 30 - Comet 73P-BT/Schwassmann-Wachmann Closest Approach To Earth (1.620 AU)
Sep 30 - Comet 9P/Tempel Closest Approach To Earth (2.560 AU)
Sep 30 - Comet P/2008 CL94 (Lemmon) At Opposition (5.296 AU)
Sep 30 - Aten Asteroid 2015 SO2 Near-Earth Flyby (0.066 AU)
Sep 30 - Apollo Asteroid 2329 Orthos Closest Approach To Earth (0.158 AU)
Sep 30 - Asteroid 6735 Madhatter Closest Approach To Earth (1.084 AU)
Sep 30 - Asteroid 6296 Cleveland Closest Approach To Earth (1.168 AU)
Sep 30 - Asteroid 327695 Yokoono Closest Approach To Earth (1.578 AU)

October 2017
Oct ?? - SAOCOM 1A/ITASAT 1 Falcon 9 Launch
Oct ?? - Iridium Next 31-40 Falcon 9 Launch
Oct ?? - Zhang Jiaxiang's 85th Birthday (1932)
Oct ?? - AsiaSat 9 Proton-M/Briz-M P4 Launch
Oct ?? - BeiDou-3 (M5 & M6) CZ-3C/YZ-1 Launch
* Oct ?? - HYLAS-4/Al Yah-3 Ariane 5 Launch
Oct 01 - NROL-52/Quasar 21 Atlas 5 Launch
Oct 01 - Comet 73P-AI/Schwassmann-Wachmann At Opposition (0.775 AU)
Oct 01 - Comet P/2010 P4 (WISE) Closest Approach To Earth (0.930 AU)
Oct 01 - Comet 73P-AV/Schwassmann-Wachmann Closest Approach To Earth (1.638 AU)
Oct 01 - Dwarf Planet Ceres Occults TYC 1928-00279-1 (11.0 Magnitude Star)
Oct 01 - Aten Asteroid 2004 QA22 Near-Earth Flyby (0.065 AU)
Oct 01 - Apollo Asteroid 2015 XE Near-Earth Flyby (0.083 AU)
Oct 01 - Kuiper Belt Object 2015 RR245 At Opposition (62.481 AU)
Oct 01 - 170th Anniversary (1847), Maria Mitchell Discovers Comet C/1847 T1
Oct 02 - Comet P/2013 YG46 (Spacewatch) Closest Approach To Earth (1.679 AU)
Oct 02 - Comet P/2010 D1 (WISE) Closest Approach To Earth (1.737 AU)
Oct 02 - Comet 60P/Tsuchinshan Closest Approach To Earth (2.735 AU)
Oct 02 - Comet P/2008 CL94 (Lemmon) Closest Approach To Earth (5.296 AU)
Oct 02 - Asteroid 763 Cupido Closest Approach To Earth (0.877 AU)
Oct 02 - Asteroid 36800 Katarinawitt Closest Approach To Earth (1.085 AU)
Oct 02 - Asteroid 6487 Tonyspear Closest Approach To Earth (1.288 AU)
Oct 02 - Asteroid 19620 Auckland Closest Approach To Earth (1.690 AU)
Oct 02 - Asteroid 14965 Bonk Closest Approach To Earth (1.793 AU)
Oct 02 - Frank Malina's 105th Birthday (1912)
Oct 03 - Moon Occults Neptune
Oct 03 - Comet 73P-AK/Schwassmann-Wachmann Closest Approach To Earth (1.703 AU)
Oct 03 - Comet 73P-AU/Schwassmann-Wachmann Closest Approach To Earth (1.705 AU)
Oct 03 - Comet 240P/NEAT Closest Approach To Earth (1.879 AU)
Oct 03 - Asteroid 10111 Frensel Closest Approach To Earth (1.621 AU)
Oct 03 - Asteroid 171381 Taipei Closest Approach To Earth (1.769 AU)
Oct 03 - Binary Asteroid 90 Antiope Closest Approach To Earth (1.835 AU)
Oct 03 - 55th Anniversary (1962), Sigma 7 Launch (Walter Schirra)
Oct 03 - 55th Anniversary (1962), Zagami Meteorite Fall (Mars Meteorite)
Oct 03 - 75th Anniversary (1942), 1st Successful Test Launch of the German A-4 Rocket (V-2)
Oct 04 - Aten Asteroid 2004 TD10 Near-Earth Flyby (0.085 AU)
* Oct 04 - Comet 352P/Skiff At Opposition (1.696 AU)
Oct 04 - Apollo Asteroid 4197 Morpheus Closest Approach To Earth (0.474 AU)
Oct 04 - Asteroid 9781 Jubjubbird Closest Approach To Earth (1.273 AU)
Oct 04 - Christen Longomontanus' 455th Birthday (1562)
Oct 04 - 10th Anniversary (2007), Kaguya (Selene 1) Moon Orbit Insertion,
Oct 04 - 60th Anniversary (1957), Sputnik 1 Launch
Oct 04-10 - World Space Week
Oct 05 - Venus Passes 0.2 Degrees From Mars
Oct 05 - Aten Asteroid 5381 Sekmet Closest Approach To Earth (0.649 AU)
Oct 05 - Atira Asteroid 2012 VE46 Closest Approach To Earth (0.791 AU)
Oct 05 - Asteroid 17058 Rocknroll Closest Approach To Earth (1.547 AU)
Oct 05 - Asteroid 671 Carnegia Closest Approach To Earth (2.044 AU)
Oct 05 - European Southern Observatory's (ESO) 55th Birthday (1962)
Oct 05 - Robert Goddard's 135th Birthday (1882)
Oct 05 - Giorgio Abetti's 135th Birthday (1882)
Oct 06 - Comet 73P-BQ/Schwassmann-Wachmann Closest Approach To Earth (1.772 AU)
Oct 06 - Comet 73P-N/Schwassmann-Wachmann Closest Approach To Earth (1.789 AU)
Oct 06 - Comet 124P/Mrkos At Opposition (3.915 AU)
Oct 06 - Asteroid 277 Elvira Occults HIP 116323 (5.9 Magnitude Star)
Oct 06 - Apollo Asteroid 2011 TB4 Near-Earth Flyby (0.065 AU)
Oct 06 - Apollo Asteroid 2017 GS6 Near-Earth Flyby (0.078 AU)
Oct 06 - Asteroid 916 America Closest Approach To Earth (0.830 AU)
Oct 06 - Asteroid 35978 Arlington Closest Approach To Earth (1.459 AU)
Oct 06 - Asteroid 9325 Stonehenge Closest Approach To Earth (1.552 AU)
Oct 06 - Asteroid 15550 Sydney Closest Approach To Earth (1.672 AU)
Oct 06 - Nevil Maskelyne's 285th Birthday (1732)
Oct 07 - Comet 73P-W/Schwassmann-Wachmann At Opposition (0.928 AU)
Oct 07 - Comet 73P-AX/Schwassmann-Wachmann Closest Approach To Earth (1.815 AU)
Oct 07 - Comet P/2016 P1 (PANSTARRS) At Opposition (3.049 AU)
Oct 07 - Asteroid 3 Juno Occults 2UCAC 27345728 (12.2 Magnitude Star)
Oct 07 - Asteroid 293909 Matterhorn Closest Approach To Earth (1.853 AU)
Oct 07 - Kuiper Belt Object 2008 ST291 At Opposition (59.575 AU)
Oct 07 - 15th Anniversary (2002), STS-112 Launch (Space Shuttle Atlantis, International Space Station)
Oct 07 - 15th Anniversary (2002), Founding of the B612 Foundation
Oct 07 - Donald Machholz's 65th Birthday (1952)
Oct 07 - Franz Suess' 150th Birthday (1867)
Oct 08 - Asteroid 134346 Pinatubo Closest Approach To Earth (0.924 AU)
Oct 08 - Asteroid 5819 Lauretta Closest Approach To Earth (1.285 AU)
Oct 08 - Asteroid 56678 Alicewessen Closest Approach To Earth (1.740 AU)
Oct 08 - 25th Anniversary (1992), Pioneer Venus' Burnup in Venus' Atmosphere
Oct 09 - Draconids Meteor Shower Peak
Oct 09 - Moon Occults Aldebaran
Oct 09 - Comet 73P-BO/Schwassmann-Wachmann Closest Approach To Earth (1.862 AU)
Oct 09 - Comet 73P-BN/Schwassmann-Wachmann Closest Approach To Earth (1.872 AU)
Oct 09 - Comet 232P/Hill At Opposition (3.118 AU)
Oct 09 - Asteroid 300221 Brucebills Closest Approach To Earth (1.682 AU)
Oct 09 - Asteroid 51825 Davidbrown Closest Approach To Earth (1.807 AU)
Oct 09 - Asteroid 230975 Rogerfederer Closest Approach To Earth (1.881 AU)
Oct 09 - Asteroid 15371 Steward Closest Approach To Earth (1.923 AU)
Oct 09 - Asteroid 16046 Gregnorman Closest Approach To Earth (2.407 AU)
Oct 09 - 25th Anniversary (1992), Peekskill Meteorite Fall (Hit Car in New York)
Oct 09 - Yury Usachev's 60th Birthday (1957)
Oct 10 - Comet 73P-BK/Schwassmann-Wachmann Closest Approach To Earth (1.895 AU)
Oct 10 - Comet 73P-J/Schwassmann-Wachmann Closest Approach To Earth (1.909 AU)
Oct 10 - Comet 89P/Russell At Opposition (2.018 AU)
Oct 10 - Asteroid 16897 (1998 DH10) Occults HIP 20804 (5.9 Magnitude Star)
Oct 10 - Apollo Asteroid 2014 DQ Near-Earth Flyby (0.082 AU)
Oct 10 - Asteroid 30857 Parsec Closest Approach To Earth (0.999 AU)
Oct 10 - Asteroid 2001 Einstein Closest Approach To Earth (1.146 AU)
Oct 10 - Asteroid 264020 Stuttgart Closest Approach To Earth (1.494 AU)
Oct 10 - Asteroid 8623 Johnnygalecki Closest Approach To Earth (2.473 AU)
Oct 10 - 50th Anniversary (1967), Enactment of the Outer Space Treaty
Oct 10 - Michael Disney's 80th Birthday (1937)
Oct 11 - AEHF 4 Atlas 5 Launch
Oct 11 - Comet P/2010 P4 (WISE) At Opposition (0.942 AU)
Oct 11 - Comet 47P/Ashbrook-Jackson Closest Approach To Earth (1.920 AU)
Oct 11 - Comet 73P-AB/Schwassmann-Wachmann Closest Approach To Earth (1.945 AU)
Oct 11 - Comet 237P/LINEAR At Opposition (2.247 AU)
Oct 11 - Apollo Asteroid 2007 DM41 Near-Earth Flyby (0.090 AU)
Oct 11 - Asteroid 8208 Volta Closest Approach To Earth (1.275 AU)
Oct 11 - Asteroid 432971 Loving Closest Approach To Earth (1.552 AU)
Oct 11 - Kuiper Belt Object 303775 (2005 QU182) At Opposition (51.333 AU)
Oct 11 - 160th Anniversary (1857), Ohaba Meteorite Fall (Fell in Fruit Garden in Romania)
Oct 12 - Progress MS-7 Soyuz-2.1a Launch (International Space Station 68P)
Oct 12 - Comet 73P-BJ/Schwassmann-Wachmann Closest Approach To Earth (1.959 AU)
Oct 12 - Comet C/2015 T2 (PANSTARRS) Closest Approach To Earth (6.193 AU)
Oct 12 - Apollo Asteroid 2012 TC4 Near-Earth Flyby (0.0004 AU)
Oct 12 - Apollo Asteroid 11500 Tomaiyowit Closest Approach To Earth (0.421 AU)
Oct 12 - Apollo Asteroid 4183 Cuno Closest Approach To Earth (1.473 AU)
Oct 12 - Jake Garn's 85th Birthday (1932)
Oct 13 - Comet 73P-AE/Schwassmann-Wachmann At Opposition (1.119 AU)
Oct 13 - Comet P/2004 T1 (LINEAR-NEAT) Perihelion (1.716 AU)
Oct 13 - Aten Asteroid 2005 TE49 Near-Earth Flyby (0.022 AU)
Oct 13 - Apollo Asteroid 2014 UR116 Near-Earth Flyby (0.072 AU)
Oct 13 - Atira Asteroid 1998 DK36 Closest Approach To Earth (1.262 AU)
Oct 13 - Asteroid 5256 Farquhar Closest Approach To Earth (1.366 AU)
Oct 13 - Asteroid 6135 Billowen Closest Approach To Earth (1.768 AU)
Oct 13 - Kuiper Belt Object 19308 (1996 TO66) At Opposition (46.380 AU)
Oct 14 - Comet 73P-AM/Schwassmann-Wachmann Closest Approach To Earth (2.025 AU)
Oct 14 - Comet 263P/Gibbs Closest Approach To Earth (2.070 AU)
Oct 14 - Apollo Asteroid 2016 UO41 Near-Earth Flyby (0.055 AU)
Oct 14 - Asteroid 14061 Nagincox Closest Approach To Earth (1.130 AU)
Oct 14 - Asteroid 7328 Casanova Closest Approach To Earth (1.199 AU)
Oct 14 - Asteroid 12574 LONEOS Closest Approach To Earth (1.638 AU)
Oct 14 - Asteroid 9725 Wainscoat Closest Approach To Earth (1.671 AU)
Oct 14 - Asteroid 1618 Dawn Closest Approach To Earth (1.883 AU)
Oct 14 - 70th Anniversary (1947), Chuck Yeager Breaks Sound Barrier
Oct 15 - Moon Occults Regulus
Oct 15 - Comet 9P/Tempel At Opposition (2.591 AU)
Oct 15 - Apollo Asteroid 2013 UM9 Near-Earth Flyby (0.044 AU)

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