[continued from previous message]

Feb 21 - Venus Passes 0.6 Degrees From Neptune
Feb 21 - Comet C/2016 T3 (PANSTARRS) At Opposition (2.254 AU)
Feb 21 - Comet 326P/Hill At Opposition (3.693AU)
Feb 21 - Asteroid 5905 Johnson Closest Approach To Earth (1.086 AU)
Feb 21 - Asteroid 12464 Manhattan Closest Approach To Earth (1.207 AU)
Feb 21 - Asteroid 149 Medusa Closest Approach To Earth (1.210 AU)
Feb 21 - Asteroid 15402 Suzaku Closest Approach To Earth (1.838 AU)
Feb 21 - Asteroid 3693 Barringer Closest Approach To Earth (2.679 AU)
Feb 21 - Kuiper Belt Object 148209 (2000 CR105) At Opposition (60.582 AU)
Feb 21 - 10th Anniversary (2008), USA Shot Down Failed Military Satellite (USA-193) with Missile
Feb 22 - Progress MS-9 Soyuz-2.1a Launch (International Space Station 70P)
Feb 22 - Apollo Asteroid 2016 CO246 Near-Earth Flyby (0.039 AU)
Feb 22 - Atira Asteroid 2013 TQ5 Closest Approach To Earth (0.374 AU)
Feb 22 - Asteroid 160512 Franck-Hertz Closest Approach To Earth (2.377 AU)
Feb 22 - Harald Friis' 125th Birthday (1893)
Feb 23 - Moon Occults Aldebaran
Feb 23 - Asteroid 12104 Chesley Closest Approach To Earth (2.068 AU)
Feb 24 - 50th Anniversary (1968), Jocelyn Bell's & Antony Hewish's Discovery of Pulsars
Feb 24 - Comet C/2014 B1 (Schwartz) Closest Approach To Earth (8.613 AU)
Feb 24 - Aten Asteroid 2017 DR109 Near-Earth Flyby (0.010 AU)
Feb 24 - Asteroid 1855 Korolev Closest Approach To Earth (1.087 AU)
Feb 24 - Aten Asteroid 99942 Apophis Closest Approach To Earth (1.550 AU)
Feb 24 - Asteroid 171183 Haleakala Closest Approach To Earth (2.043 AU)
Feb 24 - Asteroid 10195 Nebraska Closest Approach To Earth (2.380 AU)
Feb 25 - Mercury Passes 0.5 Degrees From Neptune
Feb 25 - Comet 103P/Hartley Closest Approach To Earth (2.438 AU)
Feb 25 - Comet C/2014 R3 (PANSTARRS) Closest Approach To Earth (7.258 AU)
Feb 25 - Comet C/2014 B1 (Schwartz) At Opposition (8.614 AU)
Feb 25 - Asteroid 8749 Beatles Closest Approach To Earth (1.089 AU)
Feb 26 - Apollo Asteroid 2016 FU12 Near-Earth Flyby (0.034 AU)
Feb 26 - Apollo Asteroid 2004 CK39 Near-Earth Flyby (0.086 AU)
Feb 26 - Apollo Asteroid 2017 DF38 Near-Earth Flyby (0.098 AU)
Feb 26 - Asteroid 1831 Nicholson Closest Approach To Earth (1.290 AU)
Feb 26 - Susan Helms' 60th Birthday (1958)
Feb 27 - Comet 321P/SOHO At Opposition (3.810 AU)
Feb 27 - Apollo Asteroid 2014 EY24 Near-Earth Flyby (0.038 AU)
Feb 27 - Asteroid 10637 Heimlich Closest Approach To Earth (2.146 AU)
Feb 28 - Comet 346P/Catalina Closest Approach To Earth (2.683 AU)
Feb 28 - Apollo Asteroid 2015 BF511 Near-Earth Flyby (0.030 AU)
Feb 28 - Asteroid 7434 Osaka Closest Approach To Earth (1.334 AU)
Feb 28 - Asteroid 21459 Chrisrussell Closest Approach To Earth (1.464 AU)
Feb 28 - Plutino 90482 Orcus At Opposition (47.134 AU)

March 2018
* Mar ?? - Cygnus CRS-9 (OA-9) Antares 230 Launch (International Space Station)
Mar ?? - AFSPC 11/EAGLE Atlas 5 Launch
Mar ?? - Spektr-RG (SXG) Proton-M/DM-03 Launch
Mar ?? - OneWeb 1-10 Soyuz-STB Fregat-MT Launch
Mar ?? - Transiting Expoplanet Survyey Satellite (TESS) Falcon 9 Launch
Mar ?? - GOES-S Atlas 5 Launch
Mar ?? - Cartosat-3 PSLV-CA Launch
Mar ?? - James Bradley's 325th Birthday (1693)
Mar 01 - Moon Occults Regulus
Mar 01 - Comet 73P-T/Schwassmann-Wachmann Closest Approach To Earth (1.276 AU)
Mar 01 - Comet 327P/Van Ness At Opposition (4.117 AU)
Mar 01 - 30th Anniversary (1988), Trebbin Meteorite Fall (Hit Greenhouse in East Germany)
Mar 01 - Richard Price's 75th Birthday (1943)
Mar 02 - Comet 190P/Mueller At Opposition (3.887 AU)
Mar 02 - Comet 193P/LINEAR-NEAT At Opposition (3.987 AU)
Mar 02 - Comet C/2016 T2 (Matheny) At Opposition (4.038 AU)
Mar 03 - Asteroid 3530 Hammel Closest Approach To Earth (1.952 AU)
Mar 03 - Asteroid 9661 Hohmann Closest Approach To Earth (3.894 AU)
Mar 03 - Brian Cox's 50th Birthday (1968)
Mar 03 - 155th Anniversary (1863), Creation of the National Academy of Sciences
Mar 04 - Comet 127P/Holt-Olmstead At Opposition (3.212 AU)
Mar 04 - Asteroid 2675 Tolkien Closest Approach To Earth (1.424 AU)
Mar 04 - Asteroid 132524 APL Closest Approach To Earth (2.216 AU)
Mar 04 - Patrick Moore's 95th Birthday (1923)
Mar 04 - Kuiper Belt Object 2013 FZ27 At Opposition (47.370 AU)
Mar 05 - Mercury Passes 1.4 Degrees From Venus
Mar 05 - Moon Occults Asteroid 21 Lutetia
Mar 05 - Asteroid 2791 Paradise Closest Approach To Earth (1.048 AU)
Mar 05 - Apollo Asteroid 38086 Beowolf Closest Approach To Earth (1.555 AU)
Mar 05 - Asteroid 716 Berkeley Closest Approach To Earth (1.637 AU)
Mar 05 - Asteroid 9954 Brachiosaurus Closest Approach To Earth (1.886 AU)
Mar 05 - Asteroid 10916 Okina-Ouna Closest Approach To Earth (1.907 AU)
Mar 05 - Asteroid 39382 Opportunity Closest Approach To Earth (2.991 AU)
Mar 05 - 15th Anniversary (2003), Inauguration of ESA's 1st Deep Space Ground Station at New Nocia
Mar 05 - 50th Anniversary (1968), Solrad 9 Launch (Sun Observer)
Mar 05 - Valery Korzun's 65th Birthday (1953)
Mar 06 - Asteroid 250840 Motorhead Closest Approach To Earth (2.150 AU)
Mar 06 - Asteroid 742 Edisona Closest Approach To Earth (2.401 AU)
Mar 06 - Carolyn Porco's 65th Birthday (1953)
Mar 07 - Comet P/2015 TO19 (Lemmon-PANSTARRS) At Opposition (3.694 AU)
Mar 07 - Comet 225P/LINEAR At Opposition (3.612 AU)
Mar 07 - Comet 284P/McNaught At Opposition (4.064 AU)
Mar 07 - Aten Asteroid 2003 EM1 Near-Earth Flyby (0.043 AU)
Mar 07 - Asteroid 386622 New Zealand Closest Approach To Earth (1.670 AU)
Mar 07 - Asteroid 70783 Kenwilliams Closest Approach To Earth (1.797 AU)
Mar 07 - Asteroid 4151 Alanhale Closest Approach To Earth (1.743 AU)
Mar 07 - Asteroid 617 Patroclus Closest Approach To Earth (5.001 AU)
Mar 07 - Kuiper Belt Object 2013 FY27 At Opposition (79.120 AU)
Mar 07 - Alan Hale's 60th Birthday (1958)
Mar 08 - Comet P/2015 TP200 (LINEAR) At Opposition (3.658 AU)
Mar 08 - Comet C/2017 D3 (ATLAS) Closest Approach To Earth (4.584 AU)
* Mar 08 - Apollo Asteroid 2015 FM34 Near-Earth Flyby (0.058 AU)
Mar 08 - Asteroid 40227 Tahiti Closest Approach To Earth (3.858 AU)
Mar 09 - Comet P/2005 J1 (McNaught) Closest Approach To Earth (1.822 AU)
Mar 09 - Comet 93P/Lovas At Opposition (2.638 AU)
Mar 09 - Asteroid 9548 Fortran Closest Approach To Earth (1.228 AU)
Mar 09 - Asteroid 73491 Robmatson Closest Approach To Earth (1.381 AU)
Mar 09 - Asteroid 25930 Spielberg Closest Approach To Earth (1.566 AU)
Mar 09 - Richard Walker's 80th Birthday (1938)
Mar 10 - Apollo Asteroid 2015 DK200 Near-Earth Flyby (0.018 AU)
Mar 10 - Apollo Asteroid 2003 DY15 Near-Earth Flyby (0.058 AU)
Mar 10 - Aten Asteroid 2007 CM26 Near-Earth Flyby (0.070 AU)
Mar 10 - Asteroid 10221 Kubrick Closest Approach To Earth (1.373 AU)
Mar 10 - Asteroid 12258 Oscarwilde Closest Approach To Earth (1.466 AU)
Mar 10 - Asteroid 3948 Bohr Closest Approach To Earth (1.609 AU)
Mar 10 - Asteroid 397278 Arvidson Closest Approach To Earth (1.784 AU)
Mar 10 - Asteroid 1495 Helsinki Closest Approach To Earth (1.801 AU)
Mar 10 - Asteroid 8120 Kobe Closest Approach To Earth (1.883 AU)
Mar 10 - Asteroid 4327 Ries Closest Approach To Earth (2.432 AU)
Mar 10 - Asteroid 189202 Calar Alto Closest Approach To Earth (2.340 AU)
Mar 11 - Daylight Saving - Set Clock Ahead 1 Hour (United States)
* Mar 11 - Apollo Asteroid 2102 Tantalus Closest Approach To Earth (2.033 AU)
Mar 11 - 10th Anniversary (2008), STS-123 Launch (Space Shuttle Endeavour, International Space Station)
Mar 12 - Comet 74P/Smirnova-Chernykh At Opposition (2.556 AU)
Mar 12 - Comet C/2016 N6 (PANSTARRS) Closest Approach To Earth (2.602 AU)
Mar 12 - Comet C/2015 V4 (PANSTARRS) Closest Approach To Earth (5.445 AU)
Mar 12 - Apollo Asteroid 2013 RZ73 Near-Earth Flyby (0.055 AU)
* Mar 12 - Aten Asteroid 398188 Agni Closest Approach To Earth (0.292 AU)
Mar 12 - Asteroid 35334 Yarkovsky Closest Approach To Earth (2.032 AU)
Mar 12 - Apollo Asteroid 1866 Sisyphus Closest Approach To Earth (2.206 AU)
Mar 12 - Asteroid 697 Galilea Closest Approach To Earth (2.346 AU)
Mar 12 - Wally Schirra's 85th Birthday (1923)
Mar 12 - John Theophile Desaguliers' 335th Birthday (1683)
Mar 13 - Comet 74P/Smirnova-Chernykh Closest Approach To Earth (2.556 AU)
Mar 14 - Pi Day
Mar 14 - Moon Occults Asteroid 433 Eros
Mar 14 - Asteroid 8925 Boattini Closest Approach To Earth (1.152 AU)
Mar 14 - Asteroid 48472 Mossbauer Closest Approach To Earth (1.186 AU)
Mar 14 - Aten Asteroid 367943 Duende Closest Approach To Earth (1.212 AU)
Mar 14 - Asteroid 24101 Cassini Closest Approach To Earth (1.688 AU)
Mar 14 - Frank Borman's 90th Birthday (1928)
Mar 15 - Mercury At Its Greatest Eastern Elongation (18 Degrees)
Mar 15 - Comet 125P/Spacewatch Closest Approach To Earth (1.243 AU)
Mar 15 - Comet P/2012 K3 (Gibbs) At Opposition (2.875 AU)
Mar 15 - Comet 257P/Catalina At Opposition (4.018 AU)
Mar 15 - Comet P/2006 F1 (Kowalski) Perihelion (4.108 AU)
* Mar 15 - Comet C/2017 D3 (ATLAS) At Opposition (4.594 AU)
Mar 15 - Comet C/2016 E1 (PANSTARRS) Closest Approach To Earth (7.650 AU)
Mar 15 - Asteroid 10093 Diesel Closest Approach To Earth (1.484 AU)
Mar 15 - 45th Anniversary (1973), San Juan Capistrano Meteorite Fall in California (Hit Carport Roof)
Mar 15 - 185th Anniversary (1833), Jons Berzelius' Discovery of Carbon-based Organic Minerals in the Alais Meteorite
Mar 16 - Comet 62P/Tsuchinshan Closest Approach To Earth (1.024 AU)
Mar 16 - Comet P/2015 X1 (PANSTARRS) At Opposition (3.828 AU)
Mar 16 - Asteroid 3494 Purple Mountain Closest Approach To Earth (1.565 AU)
Mar 16 - Asteroid 371 Bohemia Closest Approach To Earth (1.747 AU)
Mar 16 - Asteroid 325 Heidelberga Closest Approach To Earth (2.451 AU)
Mar 16 - Frederick Reines' 100th Birthday (1918)
Mar 16 - Heinrich Kayser's 165th Birthday (1853)
Mar 17 - Comet 103P/Hartley At Opposition (2.500 AU)
Mar 17 - Comet 235P/LINEAR Perihelion (2.732 AU)
Mar 17 - Asteroid 26858 Misterrogers Closest Approach To Earth (1.140 AU)
Mar 17 - Asteroid 15000 CCD Closest Approach To Earth (1.590 AU)
Mar 17 - Asteroid 2187 La Silla Closest Approach To Earth (1.856 AU)
Mar 17 - Asteroid 1278 Kenya Closest Approach To Earth (1.986 AU)
Mar 17 - Asteroid 6701 Warhol Closest Approach To Earth (1.994 AU)
Mar 17 - Asteroid 316201 Malala Closest Approach To Earth (2.124 AU)
Mar 17 - 60th Anniversary (1958), Vanguard 1 Launch
Mar 18 - Mercury Passes 3.9 Degrees From Venus
Mar 18 - Comet 346P/Catalina At Opposition (2.725 AU)
Mar 18 - Comet 314P/Montani Closest Approach To Earth (4.053 AU)
Mar 18 - Comet C/2016 E1 (PANSTARRS) At Opposition (7.651 AU)
Mar 18 - Asteroid 6136 Gryphon Closest Approach To Earth (2.009 AU)
Mar 19 - Comet 73P-Y/Schwassmann-Wachmann Closest Approach To Earth (1.558 AU)
Mar 19 - Comet P/2012 O2 (McNaught) At Opposition (2.706 AU)
Mar 19 - Asteroid 28600 Georgelucas Closest Approach To Earth (1.584 AU)
Mar 19 - Asteroid 24663 Philae Closest Approach To Earth (1.675 AU)
Mar 20 - Vernal Equinox, 16:15 UT
Mar 20 - Comet 235P/LINEAR At Opposition (1.740 AU)
Mar 20 - Comet 61P/Shajn-Schaldach At Opposition (3.901 AU)
Mar 20 - Comet C/2015 V4 (PANSTARRS) At Opposition (5.456 AU)
Mar 20 - Comet C/2016 C1 (PANSTARRS) Closest Approach To Earth (8.585 AU)
Mar 20 - Aten Asteroid 326290 Akhenaten Closest Approach To Earth (1.187 AU)
Mar 20 - Asteroid 1430 Somalia Closest Approach To Earth (1.934 AU)
Mar 21 - Comet 235P/LINEAR Closest Approach To Earth (1.740 AU)
Mar 21 - Apollo Asteroid 1981 Midas Near-Earth Flyby (0.090 AU)
Mar 21 - Asteroid 45 Eugenia Closest Approach To Earth (1.596 AU)
Mar 21 - Asteroid 305254 Moron Closest Approach To Earth (1.883 AU)
Mar 21 - Jean-Baptiste Joseph Fourier's 250th Birthday (1768)
Mar 22 - Moon Occults Aldebaran
Mar 22 - Comet 226P/Pigott-LINEAR-Kowalski At Opposition (3.571)
Mar 22 - Comet P/2005 T2 (Christensen) At Opposition (3.630 AU)
Mar 22 - Aten Asteroid 2011 GP44 Near-Earth Flyby (0.056 AU)
Mar 22 - Asteroid 9963 Sandage Closest Approach To Earth (2.098 AU)
Mar 22 - Asteroid 11739 Baton Rouge Closest Approach To Earth (3.830 AU)
Mar 22 - 20th Anniversary (1998), Monahans Meteorite Fall (Hit Basketball Court in Texas)
Mar 22 - Robert Millikan's 150th Birthday (1868)
Mar 22 - Alfred Fowler's 150th Birthday (1868)
Mar 23 - Comet 73P-T/Schwassmann-Wachmann Perihelion (0.950 AU)
Mar 23 - Comet 306P/LINEAR At Opposition (3.569 AU)
* Mar 23 - Comet 17P/Holmes At Opposition (4.122 AU)
Mar 23 - Apollo Asteroid 267940 (2004 EM20) Near-Earth Flyby (0.096 AU)
Mar 23 - Asteroid 9395 Saint Michel Closest Approach To Earth (1.362 AU)
Mar 23 - Asteroid 25137 Seansolomon Closest Approach To Earth (1.425 AU)
Mar 23 - Asteroid 65675 Mohr-Gruber Closest Approach To Earth (1.770 AU)
* Mar 24 - Comet P/2011 VJ5 (Lemmon) Perihelion (1.508 AU)
Mar 24 - Asteroid 72432 Kimrobinson Closest Approach To Earth (1.306 AU)
Mar 24 - 25th Anniversary (1993), Discovery of Comet Shoemaker-Levy 9
Mar 24 - 85th Anniversary (1933), Pasamonte Meteorite Shower in New Mexico
Mar 24 - Walter Baade's 125th Birthday (1893)
Mar 25 - European Summer Time - Set Clock Ahead 1 Hour (European Union)
* Mar 25 - Aten Asteroid 2017 FZ2 Near-Earth Flyby (0.071 AU)
Mar 25 - Asteroid 9249 Yen Closest Approach To Earth (1.272 AU)
Mar 25 - Asteroid 274301 Wikipedia Closest Approach To Earth (1.644 AU)
Mar 25 - Asteroid 1024 Hale Closest Approach To Earth (2.547 AU)
Mar 25 - Neptune Trojan 316179 (2010 EN65) At Opposition (25.260 AU)
Mar 25 - Dwarf Planet 136472 Makemake At Opposition (51.640 AU)
Mar 25 - 35th Anniversary (1983), Michael Jackson's Moonwalk Debut (Pasadena Civic Auditorium)
Mar 25 - James Lovell's 90th Birthday (1928)
Mar 25 - Kenneth Franklin's 95th Birthday (1923)
Mar 25 - Christopher Clavius' 480th Birthtday (1538)
Mar 26 - Comet 183P/Korlevic-Juric Closest Approach To Earth (2.899 AU)
Mar 26 - Comet 183P/Korlevic-Juric At Opposition (2.899 AU)
Mar 26 - Comet 314P/Montani At Opposition (4.062 AU)
Mar 26 - Asteroid 19911 Rigaux Closest Approach To Earth (1.195 AU)
Mar 26 - Asteroid 2625 Jack London Closest Approach To Earth (1.319 AU)
Mar 26 - Asteroid 3018 Godiva Closest Approach To Earth (1.546 AU)
Mar 26 - 15th Anniversary (2003), Park Forest Meteorite Shower (Hit Houses in Illinois)
Mar 26 - Nathaniel Bowditch's 245th Birthday (1773)
Mar 27 - Comet 300P/Catalina At Opposition (1.661 AU)
Mar 27 - Comet P/2007 S1 (Zhao) At Opposition (3.932 AU)
Mar 27 - Comet P/2010 TO20 (LINEAR-Grauer) At Opposition (4.990 AU)
Mar 27 - Comet C/2016 C1 (PANSTARRS) At Opposition (8.593 AU)
Mar 27 - Apollo Asteroid 2004 EU22 Near-Earth Flyby (0.084 AU)
Mar 27 - Asteroid 96192 Calgary Closest Approach To Earth (1.606 AU)
Mar 27 - Asteroid 4636 Chile Closest Approach To Earth (2.022 AU)
Mar 28 - Moon Occults Regulus
Mar 28 - Comet P/2005 JN (Spacewatch) At Opposition (1.423 AU)
Mar 28 - Comet P/2012 K3 (Gibbs) Closest Approach To Earth (2.848 AU)
Mar 28 - Apollo Asteroid 2016 SR2 Near-Earth Flyby (0.048 AU)
* Mar 28 - Apollo Asteroid 2013 QM48 Near-Earth Flyby (0.087 AU)
Mar 28 - Aten Asteroid 2003 FY6 Near-Earth Flyby (0.095 AU)
Mar 28 - Asteroid 3130 Hillary Closest Approach To Earth (1.952 AU)
Mar 28 - Centaur Object 31824 Elatus At Opposition (15.297 AU)
Mar 29 - Venus Passes 0.7 Degrees From Uranus
* Mar 29 - Comet 50P/Arend At Opposition (4.157 AU)
Mar 29 - Comet P/2010 TO20 (LINEAR-Grauer) Closest Approach To Earth (4.989 AU)
Mar 29 - Asteroid 3590 Holst Closest Approach To Earth (1.181 AU)
Mar 29 - Asteroid 114703 North Dakota Closest Approach To Earth (1.845 AU)
Mar 29 - 20th Anniversary (1998), Galileo, Europa 14 Flyby
Mar 29 - Tullio Levi-Civita's 145th Birthday (1873)
Mar 30 - Soyuz MS-8 Soyuz-FG Launch (International Space Station 54S)
Mar 30 - Comet 312P/NEAT At Opposition (3.803 AU)
Mar 30 - Comet P/2014 U4 (PANSTARRS) At Opposition (4.079 AU)
* Mar 30 - Comet C/2017 F2 (PANSTARRS) Closest Approach To Earth (6.215 AU)
Mar 30 - Asteroid 9537 Nolan Closest Approach To Earth (1.388 AU)
Mar 30 - Asteroid 4864 Nimoy Closest Approach To Earth (1.833 AU)
Mar 30 - Asteroid 3714 Kenrussell Closest Approach To Earth (1.868 AU)
Mar 30 - Asteroid 1801 Titicaca Closest Approach To Earth (2.076 AU)
Mar 30 - Asteroid 249521 Truth Closest Approach To Earth (2.371 AU)
Mar 31 - Comet 105P/Singer Brewster At Opposition (1.276 AU)
Mar 31 - Apollo Asteroid 2001 FA58 Near-Earth Flyby (0.097 AU)
* Mar 31 - Aten Asteroid 2010 GD35 Near-Earth Flyby (0.040 AU)
Mar 31 - Asteroid 4763 Ride Closest Approach To Earth (1.405 AU)
Mar 31 - Asteroid 784 Pickeringia Closest Approach To Earth (1.712 AU)
Mar 31 - Asteroid 9133 d'Arrest Closest Approach To Earth (2.082 AU)
Mar 31 - Asteroid 9252 Goddard Closest Approach To Earth (2.580 AU)
Mar 31 - 80th Anniversary (1938), Kasamatsu Meteorite Fall (Hit House in Japan)

April 2018
* Apr ?? - Iridium Next 61-70 Falcon 9 Launch
* Apr 01 - Easter Sunday
* Apr 01 - Moon Occults Asteroid 21 Lutetia
* Apr 01 - Comet C/2017 F2 (PANSTARRS) At Opposition (6.216 AU)
* Apr 01 - Apollo Asteroid 2007 RX8 Near-Earth Flyby (0.085 AU)
* Apr 01 - Asteroid 100000 Astronautica Closest Approach To Earth (1.067 AU)
* Apr 01 - Aten Asteroid 3554 Amun Closest Approach To Earth (1.115 AU)
* Apr 01 - Apollo Asteroid 12923 Zephyr Closest Approach To Earth (1.367 AU)
* Apr 01 - Sergey Volkov's 45th Birthday (1973)
* Apr 02 - Mars Passes 1.3 Degrees From Saturn
* Apr 02 - Comet 73P-S/Schwassmann-Wachmann Closest Approach To Earth (1.178 AU)
* Apr 02 - Comet 316P/LONEOS-Christensen Closest Approach To Earth (3.533 AU)
* Apr 02 - Aten Asteroid 2004 FG29 Near-Earth Flyby (0.010 AU)
* Apr 02 - Asteroid 16260 Sputnik Closest Approach To Earth (1.866 AU)
* Apr 02 - 55th Anniversary (1963), Luna 4 Launch (Soviet Moon Flyby Mission)
* Apr 02 - Francesco Grimaldi's 400th Birthday (1618)
* Apr 03 - Moon Occults Asteroid 16 Psyche
* Apr 03 - Asteroid 9995 Alouette Closest Approach To Earth (1.047 AU)
* Apr 03 - Asteroid 391257 Wilwheaton Closest Approach To Earth (1.808 AU)
* Apr 03 - Asteroid 96193 Edmonton Closest Approach To Earth (1.898 AU)
* Apr 03 - Asteroid 4804 Pasteur Closest Approach To Earth (2.025 AU)
* Apr 03 - Asteroid 63800 Richardnorton Closest Approach To Earth (2.106 AU)
* Apr 03 - Asteroid 12432 Usuda Closest Approach To Earth (2.160 AU)
* Apr 03 - Asteroid 1877 Marsden Closest Approach To Earth (3.102 AU)
* Apr 03 - 45th Anniversary (1973), Salyut 2 Launch (USSR's 2nd Space Station) * Apr 04 - 50th Anniversary (1968), Apollo 6 Launch (Last Test Flight of Saturn V)
* Apr 04 - Asteroid 16543 Rosetta Closest Approach To Earth (1.534 AU)
* Apr 04 - Asteroid 2807 Karl Marx Closest Approach To Earth (1.607 AU)
* Apr 04 - 35th Anniversary (1983), STS-6 Launch (Space Shuttle Challenger, 1st EVA)
* Apr 04 - Joseph Ashbrook's 100th Birthday (1918)
* Apr 05 - Comet C/2015 O1 (PANSTARRS) Closest Approach To Earth (3.233 AU)
* Apr 05 - Asteroid 5261 Eureka (Mars Trojan) Closest Approach To Earth (0.722 AU)
* Apr 05 - Asteroid 4871 Riverside Closest Approach To Earth (1.465 AU)
* Apr 05 - Asteroid 1777 Gehrels Closest Approach To Earth (1.626 AU)
* Apr 05 - Asteroid 1071 Brita Closest Approach To Earth (1.913 AU)
* Apr 05 - 45th Anniversary (1973), Pioneer 11 Launch (Jupiter & Saturn Flyby Mission)
* Apr 06 - Comet 316P/LONEOS-Christensen At Opposition (3.535 AU)
* Apr 06 - Comet P/2006 H1 (McNaught) At Opposition (3.943 AU)
* Apr 06 - Asteroid 35352 Texas Closest Approach To Earth (1.490 AU)
* Apr 06 - Asteroid 12561 Howard Closest Approach To Earth (1.672 AU)
* Apr 06 - Asteroid 2068 Dangreen Closest Approach To Earth (2.007 AU)
* Apr 06 - Asteroid 11945 Amsterdam Closest Approach To Earth (2.280 AU)
* Apr 06 - 10th Anniversary (2008), Berduc Meteorite Fall (Hit Building in Argentina)
* Apr 06 - Franck Marchis' 45th Birthday (1973)
* Apr 07 - 50th Anniversary (1968), Luna 14 Launch (Soviet Moon Orbiter Mission)
* Apr 07 - Comet P/2005 JN (Spacewatch) Closest Approach To Earth (1.410 AU)
* Apr 07 - Comet P/2006 S1 (Christensen) At Opposition (3.437 AU)
* Apr 07 - Asteroid 2511 Patterson Closest Approach To Earth (1.266 AU)
* Apr 07 - Asteroid 163693 Atira Closest Approach To Earth (1.363 AU)
* Apr 07 - 35th Anniversary (1983), 1st Spacewalk from Space Shuttle (Story Musgrave, Don Peterson, STS-6)
* Apr 08 - Comet 143P/Kowal-Mrkos At Opposition (1.542 AU)
* Apr 08 - Comet P/2012 O2 (McNaught) Closest Approach To Earth (2.652 AU)
* Apr 08 - Comet C/2015 O1 (PANSTARRS) At Opposition (3.243 AU)
* Apr 08 - Comet C/2016 T1 (Matheny) At Opposition (4.189 AU)
* Apr 08 - Comet 196P/Tichy At Opposition (4.204 AU)
* Apr 08 - Asteroid 1198 Atlantis Closest Approach To Earth (1.845 AU)
* Apr 08 - Apollo Asteroid 4179 Toutatis Closest Approach To Earth (2.817 AU)
* Apr 08 - Kuiper Belt Object 2014 FT71 At Opposition (46.680 AU)
* Apr 08 - 25th Anniversary (1993), STS-56 Launch (Space Shuttle Discovery, ATLAS-2)
* Apr 08 - Karl Hencke's 225th Birthday (1793)
* Apr 09 - Asteroid 75564 Audubon Closest Approach To Earth (1.063 AU)
* Apr 09 - Kuiper Belt Object 2013 FS28 At Opposition (83.812 AU)
* Apr 10 - Comet 222P/LINEAR At Opposition (2.922 AU)
* Apr 10 - Comet 68P/Klemola At Opposition (3.857 AU)
* Apr 10 - Asteroid 10799 Yucatan Closest Approach To Earth (1.913 AU)
* Apr 11 - Comet 143P/Kowal-Mrkos Closest Approach To Earth (1.541 AU)
* Apr 11 - Comet C/2016 A3 (PANSTARRS) Closest Approach To Earth (4.095 AU)
* Apr 11 - Apollo Asteroid 2008 GY21 Near-Earth Flyby (0.026 AU)
* Apr 11 - Asteroid 6524 Baalke Closest Approach To Earth (1.657 AU)
* Apr 11 - Asteroid 1776 Kuiper Closest Approach To Earth (2.095 AU)
* Apr 11 - Asteroid 13330 Dondavis Closest Approach To Earth (2.364 AU)
* Apr 11 - Macedonio Melloni's 220th Birthday (1798)
* Apr 12 - International Day of Human Space Flight
* Apr 12 - Yuri's Night: World Space Party
* Apr 12 - Comet P/2012 T1 (PANSTARRS) Perihelion (2.402 AU)
* Apr 12 - Comet 224P/LINEAR-NEAT At Opposition (3.261 AU)
* Apr 12 - Apollo Asteroid 363599 (2004 FG11) Near-Earth Flyby (0.049 AU)
* Apr 12 - Asteroid 443 Photographica Closest Approach To Earth (1.142 AU)
* Apr 12 - Asteroid 52246 Donaldjohanson Closest Approach To Earth (1.315 AU)
* Apr 12 - Asteroid 17024 Costello Closest Approach To Earth (1.405 AU)
* Apr 12 - Asteroid 166614 Zsazsa Closest Approach To Earth (1.639 AU)
* Apr 12 - Asteroid 9937 Triceratops Closest Approach To Earth (1.908 AU)
* Apr 12 - Asteroid 1537 Transylvania Closest Approach To Earth (2.964 AU)
* Apr 12 - 10th Anniversary (2008), Zunhua Meteorite Fall (Hit Farmhouse in China)
* Apr 12 - 50th Anniversary (1968), Schenectady Meteorite Fall (Hit House in New York)
* Apr 13 - Comet 105P/Singer Brewster Closest Approach To Earth (1.254 AU)
* Apr 13 - Comet P/2007 R2 (Gibbs) At Opposition (4.187 AU)
* Apr 13 - Aten Asteroid 2005 GZ128 Near-Earth Flyby (0.074 AU)
* Apr 13 - Apollo Asteroid 2013 GF84 Near-Earth Flyby (0.077 AU)
* Apr 13 - Asteroid 27363 Alvanclark Closest Approach To Earth (1.794 AU)
* Apr 13 - Asteroid 1958 Chandra Closest Approach To Earth (2.167 AU)
* Apr 13 - Thomas Jefferson's 175th Birthday (1843)
* Apr 14 - Comet 186P/Garradd At Opposition (3.634 AU)
* Apr 14 - Comet 158P/Kowal-LINEAR At Opposition (3.892 AU)
* Apr 14 - Aten Asteroid 2014 UR Near-Earth Flyby (0.024 AU)
* Apr 14 - Asteroid 3061 Cook Closest Approach To Earth (2.513 AU)
* Apr 14 - Asteroid 4169 Celsius Closest Approach To Earth (2.974 AU)
* Apr 15 - Comet 30P/Reinmuth Closest Approach To Earth (1.769 AU)
* Apr 15 - Comet P/2017 D1 (Fuls) At Opposition (3.734 AU)
* Apr 15 - Comet 158P/Kowal-LINEAR Closest Approach To Earth (3.892 AU)
* Apr 15 - Comet C/2016 A3 (PANSTARRS) At Opposition (4.097 AU)
* Apr 15 - Apollo Asteroid 2016 GB222 Near-Earth Flyby (0.074 AU)
* Apr 15 - Asteroid 1997 Leverrier Closest Approach To Earth (1.591 AU)
* Apr 15 - Asteroid 4342 Freud Closest Approach To Earth (1.850 AU)
* Apr 15 - Dwarf Planet 136108 Haumea At Opposition (49.617 AU)
* Apr 15 - Hermann Kohl's 130th Birthday (1888)
* Apr 16 - Progress MS-10 Soyuz-2.1a Launch (International Space Station 71P)
* Apr 16 - Asteroid 2712 Keaton Closest Approach To Earth (1.120 AU)
* Apr 16 - Asteroid 1001 Gaussia Closest Approach To Earth (2.603 AU)
* Apr 17 - Asteroid 21 Lutetia Closest Approach To Earth (1.644 AU)
* Apr 17 - 20th Anniversary (1998), STS-90 Launch (Space Shuttle Columbia, Spacelab)
* Apr 18 - Comet 62P/Tsuchinshan At Opposition (1.129 AU)
* Apr 18 - Comet 186P/Garradd Closest Approach To Earth (3.632 AU)
* Apr 18 - Asteroid 6312 Robheinlein Closest Approach To Earth (1.272 AU)
* Apr 19 - Moon Occults Aldebaran
* Apr 19 - Comet 160P/LINEAR At Opposition (3.427 AU)
* Apr 19 - Comet P/2015 Q1 (Scotti) At Opposition (3.995 AU)
* Apr 19 - Apollo Asteroid 2014 JG15 Near-Earth Flyby (0.050 AU)
* Apr 19 - Apollo Asteroid 2015 HD10 Near-Earth Flyby (0.098 AU)
* Apr 19 - Asteroid 42776 Casablanca Closest Approach TO Earth (2.039 AU)
* Apr 19 - Asteroid 193 Ambrosia Closest Approach To Earth (2.129 AU)
* Apr 19 - 5th Anniversary (2013), Wolcott Meteorite Fall (Hit House in Connecticut)
* Apr 20 - Comet P/2000 R2 (LINEAR) At Opposition (2.634 AU)
* Apr 20 - Comet 162P/Siding Spring At Opposition (3.884 AU)
* Apr 20 - Aten Asteroid 2016 JP Near-Earth Flyby (0.031 AU)
* Apr 20 - Apollo Asteroid 2010 JO33 Near-Earth Flyby (0.060 AU)
* Apr 20 - Asteroid 25399 Vonnegut Closest Approach To Earth (1.454 AU)
* Apr 20 - Asteroid 234750 Amymainzer Closest Approach To Earth (2.436 AU)
* Apr 20 - Asteroid 2906 Caltech Closest Approach To Earth (2.645 AU)
* Apr 20 - Kai Seigbahn's 100th Birthday (1918)
* Apr 21 - Comet 24P/Schaumasse Closest Approach To Earth (1.334 AU)
* Apr 21 - Comet P/2008 QP20 (LINEAR-Hill) At Opposition (4.245 AU)
* Apr 21 - Asteroid 4457 van Gogh Closest Approach To Earth (1.416 AU)
* Apr 21 - Asteroid 39415 Janeausten Closest Approach To Earth (2.675 AU)
* Apr 22 - Earth Day
* Apr 22 - Lyrids Meteor Shower Peak
* Apr 22 - Asteroid 52301 Qumran Closest Approach To Earth (1.839 AU)
* Apr 22 - Asteroid 11246 Orvillewright Closest Approach To Earth (1.882 AU)
* Apr 22 - Asteroid 2097 Galle Closest Approach To Earth (2.674 AU)
* Apr 22 - Miguel Hurtado's 40th Birthday (1978)
* Apr 23 - Comet 300P/Catalina Closest Approach To Earth (1.563 AU)
* Apr 23 - Comet P/2012 O1 (McNaught) At Opposition (2.177 AU)
* Apr 23 - Comet 147P/Kushida-Muramatsu At Opposition (3.301 AU)
* Apr 23 - Aten Asteroid 2012 XL16 Near-Earth Flyby (0.041 AU)
* Apr 23 - Apollo Asteroid 2015 XF352 Near-Earth Flyby (0.090 AU)
* Apr 23 - Asteroid 232 Russia Closest Approach To Earth (1.114 AU)
* Apr 23 - Asteroid 19367 Pink Floyd Closest Approach To Earth (1.842 AU)
* Apr 23 - Asteroid 6001 Thales Closest Approach To Earth (1.862 AU)
* Apr 23 - Asteroid 5000 IAU Closest Approach To Earth (2.201 AU)
* Apr 23 - Max Planck's 160th Birthday (1858)
* Apr 24 - Moon Occults Regulus
* Apr 24 - Asteroid 7986 Romania Closest Approach To Earth (0.969 AU)
* Apr 25 - Comet 169P/NEAT Closest Approach To Earth (1.604 AU)
* Apr 25 - Comet 33P/Daniel At Opposition (3.393 AU)
* Apr 25 - Comet P/2003 T12 (SOHO) At Opposition (3.582 AU)
* Apr 25 - Comet C/2017 B3 (LINEAR) At Opposition (3.975 AU)
* Apr 25 - Asteroid 3350 Scobee Closest Approach To Earth (1.441 AU)
* Apr 25 - Asteroid 17023 Abbott Closest Approach To Earth (1.447 AU)
* Apr 25 - Asteroid 6123 Aristoteles Closest Approach To Earth (1.449 AU)
* Apr 25 - Asteroid 268242 Pebble Closest Approach To Earth (1.497 AU)
* Apr 25 - Asteroid 827 Wolfiana Closest Approach To Earth (1.587 AU)
* Apr 25 - Asteroid 21564 Widmanstatten Closest Approach To Earth (2.663 AU)
* Apr 26 - Comet 222P/LINEAR Closest Approach To Earth (2.885 AU)
* Apr 26 - Comet 334P/NEAT Closest Approach To Earth (3.583 AU)
* Apr 26 - Comet C/2017 E3 (PANSTARRS) Closest Approach To Earth (5.357 AU)
* Apr 26 - Amor Asteroid 450648 (2006 UC63) Near-Earth Flyby (0.082 AU)
* Apr 26 - 20th Anniversary (1998), Cassini, Venus Flyby
* Apr 26 - 25th Anniversary (1993), STS-55 Launch (Space Shuttle Columbia, Spacelab-D2)
* Apr 26 - Anro Penzias' 85th Birthday (1933)
* Apr 26 - 170th Anniversary (1848), Andrew Graham's Discovery of Asteroid 9 Metis
* Apr 26 - 215th Anniversary (1803), L'Aigle Meteorite Shower (Hit House in France)
* Apr 27 - Comet P/2011 CR42 (Catalina) At Opposition (1.539 AU)
* Apr 27 - Comet 313P/Gibbs At Opposition (2.713 AU)
* Apr 27 - Apollo Asteroid 444193 (2005 SE71) Near-Earth Flyby (0.062 AU)
* Apr 27 - Amor Asteroid 194126 (2001 SG276) Near-Earth Flyby (0.084 AU)
* Apr 27 - Asteroid 3773 Smithsonian Closest Approach To Earth (1.424 AU)
* Apr 27 - Asteroid 8146 Jimbell Closest Approach To Earth (1.955 AU)
* Apr 27 - Philip Abelson's 105th Birthday (1913)
* Apr 28 - Moon Occults Asteroid 21 Lutetia
* Apr 28 - Comet P/2017 B4 (PANSTARRS) Closest Approach To Earth (2.914 AU)
* Apr 28 - Comet 202P/Scotti At Opposition (3.199 AU)
* Apr 28 - Comet 191P/McNaught At Opposition (3.968 AU)
* Apr 28 - Comet P/2008 WZ96 (LINEAR) At Opposition (4.122 AU)
* Apr 28 - Asteroid 1818 Brahms Closest Approach To Earth (1.252 AU)
* Apr 28 - Asteroid 16481 Thames Closest Approach To Earth (2.134 AU)
* Apr 28 - 15th Anniversary (2003), Galaxy Evolution Explorer (GALEX) Launch
* Apr 28 - Eugene Shoemaker's 90th Birthday (1928)
* Apr 28 - Eberhard Rees' 110th Birthday (1908)
* Apr 29 - Mercury At Its Greatest Western Elongation (27 Degrees)
* Apr 29 - Comet 45P/Honda-Mrkos-Pajdusakov At Oppositon (3.554 AU)
* Apr 29 - Comet P/2017 D4 (PANSTARRS) At Opposition (4.140 AU)
* Apr 29 - Apollo Asteroid 2013 US3 Near-Earth Flyby (0.026 AU)
* Apr 29 - Aten Asteroid 2002 JR100 Near-Earth Flyby (0.028 AU)
* Apr 29 - Asteroid 4659 Roddenberry Closest Approach To Earth (1.877 AU)
* Apr 29 - Asteroid 2700 Baikonur Closest Approach To Earth (1.980 AU)
* Apr 29 - Asteroid 4749 Ledzepplin Closest Approach To Earth (2.313 AU)
* Apr 29 - Asteroid 5870 Baltimore Closest Approach To Earth (2.947 AU)
* Apr 29 - Nikolai Budarin's 65th Birthday (1953)
* Apr 29 - Harold Urey's 125th Birthday (1893)
* Apr 30 - Moon Occults Asteroid 16 Psyche
* Apr 30 - Comet 169P/NEAT Perihelion (0.604 AU)
* Apr 30 - Comet C/2015 XY1 (Lemmon) Perihelion (7.928 AU)
* Apr 30 - Asteroid 42981 Jenniskens Closest Approach To Earth (1.176 AU)
* Apr 30 - Asteroid 2801 Huygens Closest Approach To Earth (2.080 AU)
* Apr 30 - Kuiper Belt Object 2014 FC69 At Opposition (83.812 AU)

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