Welcome to the Space Calendar!

Created in 1994, this Space Calendar covers space-related activities
and anniversaries for the upcoming year. It is also available on the
web at:

http://www.jpl.nasa.gov/calendar/

The online version of the Space Calendar includes over 5,200 links to related websites.

This calendar is compiled and maintained by Ron Baalke. Please send any updates or corrections to ron@jpl.nasa.gov. Note that launch dates
are subject to change at any time. Also, note that anniversary dates are listed in 5 year increments only.

Follow me on Twitter: https://twitter.com/RonBaalke


=========================
SPACE CALENDAR
March 22, 2018
=========================

* indicates changes from last month's calendar.

March 2018
Mar ?? - Cartosat-3 PSLV-CA Launch
Mar ?? - Jilin 1-09,1-10,1-11,1-12 Kuaizhou 1A Launch
* Mar ?? - Pakistan Remote Sensing Satellite (PRSS-1) CZ-2C/SMA Launch
* Mar ?? - Zhuhai-1 03 CZ-11 Launch
Mar ?? - James Bradley's 325th Birthday (1693)
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 - Apollo Asteroid 2018 EV1 Near-Earth Flyby (0.019 AU)
Mar 22 - Aten Asteroid 2011 GP44 Near-Earth Flyby (0.056 AU)
Mar 22 - Asteroid 9395 Saint Michel Closest Approach To Earth (1.361 AU)
Mar 22 - Asteroid 45 Eugenia Closest Approach To Earth (1.595 AU)
Mar 22 - Asteroid 33002 Everest Closest Approach To Earth (1.895 AU)
Mar 22 - Asteroid 9963 Sandage Closest Approach To Earth (2.097 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 - Soyuz MS-8 Soyuz-FG Launch (International Space Station 54S)
Mar 23 - Comet 73P-T/Schwassmann-Wachmann Perihelion (0.950 AU)
Mar 23 - Comet 363P/Lemmon Perihelion (1.508 AU)
Mar 23 - Comet 306P/LINEAR At Opposition (3.569 AU)
Mar 23 - Comet 17P/Holmes At Opposition (4.122 AU)
Mar 23 - Comet C/2017 K1 (PANSTARRS) Perihelion (7.262 AU)
* Mar 23 - Apollo Asteroid 2018 FC3 Near-Earth Flyby (0.013 AU)
* Mar 23 - Apollo Asteroid 2018 FL2 Near-Earth Flyby (0.023 AU)
* Mar 23 - Apollo Asteroid 2018 FA2 Near-Earth Flyby (0.029 AU)
Mar 23 - Apollo Asteroid 267940 (2004 EM20) Near-Earth Flyby (0.096 AU)
Mar 23 - Asteroid 65675 Mohr-Gruber Closest Approach To Earth (1.770 AU)
Mar 24 - Comet P/2017 W3 (Gibbs) Closest Approach To Earth (2.860 AU)
Mar 24 - Comet P/2017 W3 (Gibbs) At Opposition (2.860 AU)
* Mar 24 - Apollo Asteroid 2018 FW1 Near-Earth Flyby (0.024 AU)
* Mar 24 - Amor Asteroid 2018 ER3 Near-Earth Flyby (0.082 AU)
* Mar 24 - Amor Asteroid 2018 DY1 Near-Earth Flyby (0.094 AU)
Mar 24 - Asteroid 72432 Kimrobinson Closest Approach To Earth (1.305 AU)
Mar 24 - Asteroid 25137 Seansolomon Closest Approach To Earth (1.424 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 - Comet C/2017 M3 (PANSTARRS) At Opposition (4.479 AU)
Mar 25 - Asteroid 773 Irmintraud Occults HIP 98842 (5.1 Magnitude Star)
Mar 25 - Asteroid 4 Vesta Occults 2UCAC 25366909 (12.0 Magnitude Star)
* Mar 25 - Apollo Asteroid 2018 FQ1 Near-Earth Flyby (0.014 AU)
* Mar 25 - Apollo Asteroid 2018 FB3 Near-Earth Flyby (0.024 AU)
Mar 25 - Aten Asteroid 2017 FZ2 Near-Earth Flyby (0.071 AU)
Mar 25 - Asteroid 9249 Yen Closest Approach To Earth (1.271 AU)
Mar 25 - Asteroid 274301 Wikipedia Closest Approach To Earth (1.643 AU)
Mar 25 - Asteroid 1024 Hale Closest Approach To Earth (2.547 AU)
Mar 25 - Neptune Trojan 316179 (2010 EN65) At Opposition (25.620 AU)
Mar 25 - Dwarf Planet 136472 Makemake At Opposition (51.639 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 C/2018 F1 (Grauer) At Opposition (2.944 AU)
Mar 26 - Comet 314P/Montani At Opposition (4.062 AU)
* Mar 26 - Apollo Asteroid 2018 FR1 Near-Earth Flyby (0.016 AU)
Mar 26 - Asteroid 19911 Rigaux Closest Approach To Earth (1.194 AU)
Mar 26 - Asteroid 2625 Jack London Closest Approach To Earth (1.318 AU)
Mar 26 - Asteroid 3018 Godiva Closest Approach To Earth (1.545 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 183P/Korlevic-Juric At Opposition (2.899 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 2018 DH1 Near-Earth Flyby (0.024 AU)
Mar 27 - Apollo Asteroid 2004 EU22 Near-Earth Flyby (0.084 AU)
Mar 27 - Asteroid 96192 Calgary Closest Approach To Earth (1.605 AU)
Mar 27 - Asteroid 4636 Chile Closest Approach To Earth (2.021 AU)
* Mar 28 - EMKA Soyuz-2-1v
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 2018 FU1 Near-Earth Flyby (0.032 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 (1.951 AU)
Mar 28 - Centaur Object 31824 Elatus At Opposition (15.297 AU)
* Mar 29 - Iridium Next 41-50 Falcon 9 Launch
* Mar 29 - GSAT-6A GSLV Mk II Launch
* Mar 29 - BeiDou-3 (M7 & M8) CZ-3B/YZ-1 Launch
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 - Apollo Asteroid 2018 FB Near-Earth Flyby (0.013 AU)
Mar 29 - Asteroid 114703 North Dakota Closest Approach To Earth (1.844 AU)
Mar 29 - 20th Anniversary (1998), Galileo, Europa 14 Flyby
Mar 29 - Tullio Levi-Civita's 145th Birthday (1873)
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/2018 B1 (Lemmon) Perihelion (5.117 AU)
* Mar 30 - Apollo Asteroid 2018 FB2 Near-Earth Flyby (0.026 AU)
Mar 30 - Apollo Asteroid 37655 Illapa Closest Approach To Earth (0.283 AU)
Mar 30 - Asteroid 3590 Holst Closest Approach To Earth (1.180 AU)
Mar 30 - Asteroid 9537 Nolan Closest Approach To Earth (1.387 AU)
Mar 30 - Asteroid 4864 Nimoy Closest Approach To Earth (1.832 AU)
Mar 30 - Asteroid 3714 Kenrussell Closest Approach To Earth (1.867 AU)
Mar 30 - Asteroid 1801 Titicaca Closest Approach To Earth (2.075 AU)
Mar 30 - Asteroid 249521 Truth Closest Approach To Earth (2.370 AU)
Mar 31 - Comet 105P/Singer Brewster At Opposition (1.276 AU)
Mar 31 - Comet C/2017 F2 (PANSTARRS) Closest Approach To Earth (6.070 AU)
Mar 31 - Asteroid 16 Psyche Occults TYC 6185-00126-1 (11.3 Magnitude Star)
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 (1.404 AU)
Mar 31 - Asteroid 784 Pickeringia Closest Approach To Earth (1.712 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 ?? - Chandrayaan 2 GSLV Mk II Launch (India Moon Orbiter, Lander, Rover)
Apr ?? - Gaofen 5 (GF 5) CZ-4C Launch
Apr ?? - SkySat 14 & 15/Eu:CROPIS/ORS 6 (COWVR)/STPSat 5/NEXTSat 1/KazSTSAT/BlackSky Global 1=4/
HawkEye Pathfinder 1-3/ORS 7A & 7B (Polar Scout 1 & 2)/COPPER 2/MinXSS 2/Audacy Zero/
Fox 1C (Fox 1Cliff)/KNACKSAT/Elysium-Star 2/JY1-Sat Falcon 9 Launch * Apr ?? - Outernet 1 Electron Launch
* Apr ?? - Superbird 8/DSN 1/ Hylas 4 Ariane 5 Launch
Apr 01 - Easter Sunday
Apr 01 - Moon Occults Asteroid 21 Lutetia
* Apr 01 - Apollo Asteroid 2018 EM4 Near-Earth Flyby (0.016 AU)
* Apr 01 - Amor Asteroid 2018 FV1 Near-Earth Flyby (0.086 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 - Apollo Asteroid 12923 Zephyr Closest Approach To Earth (1.365 AU)
Apr 01 - Asteroid 9133 d'Arrest Closest Approach To Earth (2.081 AU)
Apr 01 - Sergey Volkov's 45th Birthday (1973)
Apr 02 - CRS-14/CAPSat/CIRiS/TJREVERB/SASSI2/CySat 1/TechEdSat 8/Virginia 1-3/SPACE-HAUC/SOCRATES/UNITE/EnduroSat One/Overview 1A Falcon 9 Launch (International Space Station)
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 - Comet C/2017 F2 (PANSTARRS) At Opposition (6.070 AU)
Apr 02 - Aten Asteroid 2004 FG29 Near-Earth Flyby (0.010 AU)
* Apr 02 - Apollo Asteroid 2018 ER1 Near-Earth Flyby (0.040 AU)
Apr 02 - Aten Asteroid 3554 Amun Closest Approach To Earth (1.116 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 (1.046 AU)
Apr 03 - Asteroid 26732 Damianpeach Closest Approach To Earth (1.438 AU)
Apr 03 - Asteroid 84566 VIMS Closest Approach To Earth (1.523 AU)
Apr 03 - Asteroid 4804 Pasteur Closest Approach To Earth (2.024 AU)
Apr 03 - Asteroid 163800 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 4 Vesta Occults 2UCAC 25373191 (11.8 Magnitude Star)
* Apr 04 - Apollo Asteroid 2018 EB Near-Earth Flyby (0.027 AU)
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 - Asteroid 391257 Wilwheaton Closest Approach To Earth (1.807 AU)
Apr 04 - Asteroid 96193 Edmonton Closest Approach To Earth (1.898 AU)
Apr 04 - 35th Anniversary (1983), STS-6 Launch (Space Shuttle Challenger, 1st EVA)
Apr 04 - Joseph Ashbrook's 100th Birthday (1918)
* Apr 05 - Bangabandhu-1 Falcon 9 Launch
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 - Atira Asteroid 2015 DR215 Closest Approach To Earth (0.970 AU)
Apr 05 - Asteroid 4871 Riverside Closest Approach To Earth (1.464 AU)
Apr 05 - Asteroid 1777 Gehrels Closest Approach To Earth (1.625 AU)
Apr 05 - Asteroid 1071 Brita Closest Approach To Earth (1.913 AU)
Apr 05 - Asteroid 2068 Dangreen Closest Approach To Earth (2.007 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 - 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 (1.264 AU)
Apr 07 - Asteroid 163693 Atira Closest Approach To Earth (1.363 AU)
Apr 07 - Asteroid 12561 Howard Closest Approach To Earth (1.671 AU)
Apr 07 - Asteroid 11945 Amsterdam Closest Approach To Earth (2.280 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 (3.234 AU)
Apr 08 - Comet C/2016 T1 (Matheny) At Opposition (4.192 AU)
Apr 08 - Comet 196P/Tichy At Opposition (4.204 AU)
Apr 08 - Amor Asteroid 2018 CZ13 Near-Earth Flyby (0.072 AU)
Apr 08 - Asteroid 1198 Atlantis Closest Approach To Earth (1.845 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 (1.062 AU)
Apr 09 - Apollo Asteroid 4179 Toutatis Closest Approach To Earth (2.818 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 - Amor Asteroid 3757 Anagolay Closest Approach To Earth (0.950 AU)
* Apr 11 - Comet 365P/PANSTARRS At Opposition (0.548 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 - Apollo Asteroid 2018 BY2 Near-Earth Flyby (0.061 AU)
Apr 11 - Asteroid 6524 Baalke Closest Approach To Earth (1.656 AU)
Apr 11 - Asteroid 10799 Yucatan Closest Approach To Earth (1.913 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 - AFSPC 11/EAGLE Atlas 5 Launch
Apr 12 - Comet 358P/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 (1.141 AU)
Apr 12 - Asteroid 52246 Donaldjohanson Closest Approach To Earth (1.315 AU)
Apr 12 - Asteroid 166614 Zsazsa Closest Approach To Earth (1.638 AU)
Apr 12 - Asteroid 9937 Triceratops Closest Approach To Earth (1.908 AU)
Apr 12 - Asteroid 1537 Transylvania Closest Approach To Earth (2.965 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 17024 Costello Closest Approach To Earth (1.404 AU)
Apr 13 - Asteroid 27363 Alvanclark Closest Approach To Earth (1.793 AU)
Apr 13 - Asteroid 1958 Chandra Closest Approach To Earth (2.167 AU)
Apr 13 - Thomas Jefferson's 275th Birthday (1743)
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 C/2018 F1 (Grauer) Closest Approach To Earth (2.881 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 (1.590 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 - Transiting Expoplanet Survyey Satellite (TESS) Falcon 9 Launch
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 - Comet C/2018 E1 (ATLAS) Perihelion (2.705 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 (1.130 AU)
Apr 18 - Comet 186P/Garradd Closest Approach To Earth (3.632 AU)
* Apr 18 - Apollo Asteroid 2015 XE352 Near-Earth Flyby (0.070 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 6312 Robheinlein Closest Approach To Earth (1.272 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 - Atira Asteroid 164294 (2004 XZ130) Closest Approach To Earth (0.667 AU)
Apr 20 - Asteroid 25399 Vonnegut Closest Approach To Earth (1.454 AU)
Apr 20 - Asteroid 234750 Amymainzer Closest Approach To Earth (2.437 AU)
Apr 20 - Asteroid 2906 Caltech Closest Approach To Earth (2.645 AU)
Apr 20 - Kai Seigbahn's 100th Birthday (1918)
* Apr 21 - Apstar 6C CZ-3B/E Launch
Apr 21 - Comet 24P/Schaumasse Closest Approach To Earth (1.333 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 (2.676 AU)
Apr 22 - Earth Day
Apr 22 - Lyrids Meteor Shower Peak
* Apr 22 - Blagovest-12L Proton-M/Briz-M Launch
Apr 22 - Tesla Roadster At Opposition (0.166 AU)
* Apr 22 - Apollo Asteroid 2018 CY Near-Earth Flyby (0.097 AU)
Apr 22 - Asteroid 11246 Orvillewright Closest Approach To Earth (1.882 AU)
Apr 22 - Asteroid 2097 Galle Closest Approach To Earth (2.675 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 - Aten Asteroid 2017 HF1 Near-Earth Flyby (0.061 AU)
Apr 23 - Apollo Asteroid 2015 XF352 Near-Earth Flyby (0.090 AU)
Apr 23 - Asteroid 400796 Douglass Closest Approach To Earth (1.803 AU)
Apr 23 - Asteroid 52301 Qumran Closest Approach To Earth (1.839 AU)
Apr 23 - Asteroid 6001 Thales Closest Approach To Earth (1.863 AU)
Apr 23 - Asteroid 5000 IAU Closest Approach To Earth (2.202 AU)
Apr 23 - Max Planck's 160th Birthday (1858)
Apr 24 - Moon Occults Regulus
Apr 24 - Asteroid 4 Vesta Occults 2UCAC 25156525 (12.5 Magnitude Star)
Apr 24 - Apollo Asteroid 469219 (2016 HO3) Closest Approach To Earth (0.145 AU)
Apr 24 - Asteroid 7986 Romania Closest Approach To Earth (0.969 AU)
Apr 24 - Asteroid 232 Russia Closest Approach To Earth (1.113 AU)
Apr 24 - Asteroid 19367 Pink Floyd Closest Approach To Earth (1.842 AU)
Apr 24 - Kuiper Belt Object 42355 Typhon At Opposition (20.615 AU)
* Apr 25 - Sentinel 3B Rokot-KM Launch
Apr 25 - Comet 169P/NEAT Closest Approach To Earth (1.604 AU)
Apr 25 - Comet 222P/LINEAR Closest Approach To Earth (2.885 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 (3.972 AU)
* Apr 25 - Apollo Asteroid 2018 EY3 Near-Earth Flyby (0.088 AU)
Apr 25 - Apollo Asteroid 4581 Asciepius Closest Approach To Earth (0.293 AU)
Apr 25 - Asteroid 3350 Scobee Closest Approach To Earth (1.441 AU)
Apr 25 - Asteroid 17023 Abbott Closest Approach To Earth (1.446 AU)
Apr 25 - Asteroid 6123 Aristoteles Closest Approach To Earth (1.448 AU)
Apr 25 - Asteroid 268242 Pebble Closest Approach To Earth (1.497 AU)
Apr 25 - Asteroid 827 Wolfiana Closest Approach To Earth (1.586 AU)
Apr 25 - Asteroid 248750 Asteroidday Closest Approach To Earth (2.138 AU)
Apr 25 - Asteroid 21564 Widmanstatten Closest Approach To Earth (2.664 AU)
Apr 26 - Comet 334P/NEAT Closest Approach To Earth (3.583 AU)
Apr 26 - Comet C/2017 E3 (PANSTARRS) Closest Approach To Earth (5.356 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 - Apollo Asteroid 5786 Talos Closest Approach To Earth (0.792 AU)
Apr 27 - Asteroid 3773 Smithsonian Closest Approach To Earth (1.423 AU)
Apr 27 - Asteroid 8146 Jimbell Closest Approach To Earth (1.955 AU)
Apr 27 - Philip Abelson's 105th Birthday (1913)
* Apr 28 - Iridium Next 51-55/GRACE-FO 1 & 2 Falcon 9 Launch
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 (2.135 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 (4.139 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 (1.878 AU)
Apr 29 - Asteroid 4749 Ledzepplin Closest Approach To Earth (2.315 AU)
Apr 29 - Asteroid 5870 Baltimore Closest Approach To Earth (2.948 AU)
Apr 29 - Nikolai Budarin's 65th Birthday (1953)
Apr 29 - Harold Urey's 125th Birthday (1893)
* Apr 30 - SES-12 Falcon 9 Launch
Apr 30 - Moon Occults Asteroid 16 Psyche
Apr 30 - Comet 169P/NEAT Perihelion (0.604 AU)
Apr 30 - Comet C/2017 K1 (PANSTARRS) Closest Approach To Earth (6.259 AU)
Apr 30 - Comet C/2017 K1 (PANSTARRS) At Opposition (6.259 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 2700 Baikonur Closest Approach To Earth (1.981 AU)
Apr 30 - Asteroid 2801 Huygens Closest Approach To Earth (2.082 AU)
Apr 30 - Kuiper Belt Object 2014 FC69 At Opposition (83.812 AU)

May 2018
May ?? - Moon Express (MX-1E-1) Electron Launch
May ?? - GPS 3A-2 Falcon 9 Launch
May ?? - GEO-KOMPSAT-2A Ariane 5 Launch
May ?? - IRNSS-1I PSLV-XL Launch
* May ?? - GSAT-29 GSLV Mk III Launch
* May ?? - BeiDou-3 (M9 & M10) CZ-3C/YZ-1 Launch
* May ?? - GLONASS-M 759 Soyuz-2.1b/Fregat-M Launch
May ?? - Edward Cooper's 220th Birthday (1798)
May 01 - Comet P/2011 CR42 (Catalina) Closest Approach To Earth (1.537 AU)
May 01 - Comet 330P/Catalina At Opposition (4.022 AU)
* May 01 - Amor Asteroid 2018 DX3 Near-Earth Flyby (0.081 AU)
May 01 - Asteroid 4330 Vivaldi Closest Approach To Earth (1.318 AU)
May 01 - Asteroid 51828 Ilanramon Closest Approach To Earth (2.011 AU)
May 01 - Asteroid 13688 Oklahoma Closest Approach To Earth (2.134 AU)
May 01 - 20th Anniversary (1998), Discovery of Dar al Gani 476 Meteorite in Sahara Desert (Mars Meteorite)
May 02 - Comet 169P/NEAT At Opposition (1.609 AU)
May 02 - Comet 334P/NEAT At Opposition (3.588 AU)
May 02 - Asteroid 9885 Linux Closest Approach To Earth (1.447 AU)
May 02 - Asteroid 4047 Chang'E Closest Approach To Earth (1.852 AU)
May 02 - Asteroid 5471 Tunguska Closest Approach To Earth (1.880 AU)
May 02 - Asteroid 16626 Thumper Closest Approach To Earth (1.928 AU)
May 02 - Asteroid 2099 Opik Closest Approach To Earth (2.044 AU)
May 02 - Asteroid 9860 Archaeopteryx Closest Approach To Earth (2.146 AU)
May 02 - Kuiper Belt Object 2010 EK139 At Opposition (35.418 AU)
May 02 - Robert Wood's 150th Birthday (1868)
May 03 - Comet 313P/Gibbs Closest Approach To Earth (2.708 AU)
May 03 - Comet C/2017 E3 (PANSTARRS) At Opposition (5.365 AU)
May 03 - Amor Asteroid 2015 JP Near-Earth Flyby (0.097 AU)
May 03 - Asteroid 10866 Peru Closest Approach To Earth (1.193 AU)
May 03 - Asteroid 4122 Ferrari Closest Approach To Earth (1.442 AU)
May 03 - Asteroid 9134 Encke Closest Approach To Earth (1.909 AU)
May 03 - Asteroid 3325 TARDIS Closest Approach To Earth (2.177 AU)
May 03 - Asteroid 13677 Alvin Closest Approach To Earth (2.373 AU)
May 03 - Asteroid 13897 Vesuvius Closest Approach To Earth (2.960 AU)
May 03 - Steven Weinberg's 85th Birthday (1933)
May 03 - Ernst Hartwig's 95th Birthday (1923)
May 04 - Space Day
May 04 - Star Wars Day
May 04 - Comet 37P/Forbes Perihelion (1.610 AU)
May 04 - Comet 30P/Reinmuth At Opposition (1.816 AU)
May 04 - Apollo Asteroid 2017 WY14 Near-Earth Flyby (0.052 AU)
May 04 - Asteroid 17898 Scottsheppard Closest Approach To Earth (1.101 AU)
May 04 - Jean-Charles de Borda's 285th Birthday (1733)
May 04 - Jean-Philippe de Cheseaux's 300th Birthday (1718)
May 05 - InSight/Mars Cube One 1 & 2 Atlas 5 Launch (Mars Lander)
May 05 - National Astronaut Day
May 05 - Eta Aquarids Meteor Shower Peak
* May 05 - Asteroid 8299 Tealeoni Closest Approach To Earth (0.956 AU)
May 05 - Asteroid 9342 Carygrant Closest Approach To Earth (1.568 AU)
May 05 - Asteroid 12846 Fullerton Closest Approach To Earth (2.095 AU)
May 05 - Albert Marth's 190th Birthday (1828)
May 06 - Comet 107P/Wilson-Harrington Closest Approach To Earth (1.688 AU)
May 06 - Comet 304P/Ory At Opposition (3.926 AU)
May 06 - Apollo Asteroid 1685 Toro Closest Approach To Earth (0.972 AU)
May 06 - Asteroid 8283 Edinburgh Closest Approach To Earth (2.037 AU)
May 06 - Asteroid 2476 Andersen Closest Approach To Earth (2.210 AU)
May 06 - Carl Hergenrother's 45th Birthday (1973)
May 06 - Grove Gilbert's 175th Birthday (1843)
May 07 - Comet 143P/Kowal-Mrkos Perihelion (2.532 AU)
May 07 - Comet P/2000 R2 (LINEAR) Closest Approach To Earth (2.591 AU)
May 07 - Comet 350P/McNaught Closest Approach To Earth (2.753 AU)
May 07 - Comet 350P/McNaught At Opposition (2.753 AU)
May 07 - Comet C/2016 S1 (PANSTARRS) At Opposition (3.266 AU)
May 07 - Comet C/2017 A1 (PANSTARRS) At Opposition (3.787 AU)
May 07 - Apollo Asteroid 1999 FN19 Near-Earth Flyby (0.025 AU)
* May 07 - Asteroid 4433 Goldstone Closest Approach To Earth (1.499 AU)
May 07 - Apollo Asteroid 11311 Peleus Closest Approach To Earth (1.742 AU)
May 07 - Kuiper Belt Object 2010 FX86 At Opposition (45.160 AU)
May 08 - Comet 253P/PANSTARRS Perihelion (2.037 AU)
May 08 - Comet 254P/McNaught At Opposition (4.181 AU)
May 08 - Asteroid 21 Lutetia Occults TYC 4950-00415-1 (11.7 Magnitude Star)
May 08 - Apollo Asteroid 2016 JQ5 Near-Earth Flyby (0.016 AU)
May 08 - Asteroid 2709 Sagan Closest Approach To Earth (1.063 AU)
May 08 - Asteroid 16857 Goodall Closest Approach To Earth (1.622 AU)
May 08 - Apollo Asteroid 3103 Eger Closest Approach To Earth (1.753 AU)
May 08 - Centaur Object 144908 (2004 YH32) At Opposition (11.685 AU)
* May 09 - Cygnus CRS-9 (OA-9)/CubeRRT/HaloSat/RainCube/SORTIE/TEMPEST-D/CaNOP/
RadSat-g/EQUiSat/MemSat Antares 230 Launch (International Space Station)
May 09 - Jupiter At Opposition
May 09 - Comet C/2016 R2 (PANSTARRS) Perihelion (2.602 AU)
May 09 - Comet 348P/PANSTARRS Closest Approach To Earth (2.870 AU)
May 09 - Comet P/1999 RO28 (LONEOS) At Opposition (2.929 AU)
May 09 - Apollo Asteroid 388945 (2008 TZ3) Near-Earth Flyby (0.017 AU)
May 09 - Asteroid 12397 Peterbrown Closest Approach To Earth (1.953 AU)
May 09 - Asteroid 12760 Maxwell Closest Approach To Earth (2.139 AU)
May 09 - 15th Anniversary (2003), Hayabusa Launch (Japan Asteroid Sample Return Mission)
May 10 - Comet P/2017 B4 (PANSTARRS) At Opposition (2.933 AU)
May 10 - Comet 260P/McNaught At Opposition (3.169 AU)
May 10 - Comet 230P/LINEAR At Opposition (4.175 AU)
May 10 - Asteroid 243 Ida Occults TYC 6810-00664-1 (9.9 Magnitude Star)
* May 10 - Asteroid 19155 Lifeson Closest Approach To Earth (2.026 AU)
May 10 - Asteroid 9357 Venezuela Closest Approach To Earth (2.102 AU)
May 10 - Asteroid 1501 Baade Closest Appraoch To Earth (2.115 AU)
May 10 - Kuiper Belt Object 90568 (2004 GV9) At Opposition (38.560 AU)
May 10 - Augustin-Jean Frensel's 230th Birthday (1788)
May 11 - Comet 255P/Levy Closest Approach To Earth (2.658 AU)
May 11 - Richard Feynman's 100th Birthday (1918)
May 12 - Mercury Passes 2.4 Degrees From Uranus
May 12 - Comet 168P/Hergenrother At Opposition (3.043 AU)
May 12 - Comet 322P/SOHO At Opposition (3.605 AU)
May 12 - Atira Asteroid 434326 (2004 JG6) Closest Approach To Earth (0.937 AU)
May 12 - Asteroid 128523 Johnmuir Closest Approach To Earth (1.775 AU)
May 12 - John Hind's 195th Birthday (1823)
May 13 - Asteroid 2874 Jim Young Closest Approach To Earth (1.532 AU)
* May 13 - Asteroid 15495 Bogie Closest Approach To Earth (2.119 AU)
May 13 - Alexis-Claude Clairaut's 305th Birthday (1713)
May 14 - Comet 227P/Catalina-LINEAR Closest Approach To Earth (2.152 AU)
May 14 - Comet 348P/PANSTARRS At Opposition (2.874 AU)
May 14 - Comet 113P/Spitaler At Opposition (4.203 AU)
* May 14 - Asteroid 6336 Dodo Closest Approach To Earth (1.675 AU)
* May 14 - Asteroid 16 Psyche Closest Approach To Earth (2.2388888888 AU)
May 14 - Asteroid 4255 Spacewatch Closest Approach To Earth (2.422 AU)
May 14 - Asteroid 580 Selene Closest Approach To Earth (2.474 AU)
May 14 - 45th Anniversary (1973), Skylab Launch
May 15 - Comet P/2012 O1 (McNaught) Closest Approach To Earth (2.111 AU)
May 15 - Comet C/2013 C2 (Tenagra) Closest Approach To Earth (8.818 AU)

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