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 5,400 links to related home pages.

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

The following people have contributed to this month's calendar:

o Rick Baldridge

=========================
SPACE CALENDAR
April 22, 2017
=========================

* indicates changes from last month's calendar.

April 2017
* Apr ?? - SGDC-1/ Koreasat 7 Ariane 5 Launch
* Apr ?? - SES-15 Soyuz-STB Fregat-MT Launch
Apr 22 - Earth Day
Apr 22 - Cassini, Final Titan Flyby
Apr 22 - Lyrids Meteor Shower Peak
Apr 22 - Moon Occults Neptune
Apr 22 - Comet 94P/Russell Closest Approach To Earth (1.540 AU)
Apr 22 - Comet 157P/Tritton At Opposition (2.190 AU)
Apr 22 - Comet 107P/Wilson-Harrington At Opposition (2.510 AU)
Apr 22 - Comet P/2014 U2 (Kowalski) At Opposition (3.706 AU)
Apr 22 - Comet 119P/Parker-Hartley At Opposition (4.201 AU)
Apr 22 - Aten Asteroid 2016 JP Near-Earth Flyby (0.065 AU)
Apr 22 - Asteroid 10051 Albee Closest Approach To Earth (2.137 AU)
Apr 22 - 5th Anniversary (2012), Sutter's Mill Meteorite Fall in California
Apr 23 - 50th Anniversary (1967), Soyuz 1 Launch
Apr 23 - Max Valier Sat/Venta 1/Blue Diamond/Green Diamond/Red Diamond/COMPASS 2/InflateSail/
LituanicaSAT 2/URSA MAIOR/NUDTSat/Pegasus/UCLSat/VZLUsat 1 PSLV Launch
Apr 23 - Comet C/2017 E4 (Lovejoy) Perihelion (0.494 AU)
Apr 23 - Comet C/2017 E3 (PANSTARRS) At Opposition (5.057 AU)
* Apr 23 - Apollo Asteroid 2017 HH1 Near-Earth Flyby (0.016 AU)
* Apr 23 - Apollo Asteroid 2017 GK4 Near-Earth Flyby (0.092 AU)
* Apr 23 - Asteroid 10063 Erinleeryan Closest Approach To Earth (2.877 AU)
Apr 23 - 55th Anniversary (1962), Ranger 4 Launch (Moon Impact Mission)
Apr 24 - 50th Anniversary (1967), 1st Person To Die On A Space Mission - Vladimir Komarov
Apr 24 - Moon Occults Asteroid 2 Pallas
Apr 24 - Comet 267P/LONEOS Closest Approach To Earth (2.943 AU)
* Apr 24 - Apollo Asteroid 2017 HY Near-Earth Flyby (0.008 AU)
* Apr 24 - Apollo Asteroid 2017 FH101 Near-Earth Flyby (0.048 AU)
Apr 24 - Asteroid 951 Gaspra Closest Approach To Earth (1.583 AU)
Apr 24 - Asteroid 4226 Damiaan Closest Approach To Earth (2.289 AU)
Apr 24-30 - Astronomy Week
Apr 25 - Comet C/2015 TQ209 (LINEAR) Closest Approach To Earth (2.581 AU)
Apr 25 - Comet 104P/Kowal At Opposition (2.678 AU)
Apr 25 - Comet 21P/Giacobini-Zinner At Opposition (3.502 AU)
Apr 25 - Comet 11P/Tempel-Swift-LINEAR At Opposition (4.183 AU)
* Apr 25 - Comet C/2017 E3 (PANSTARRS) Closest Approach To Earth (5.056 AU)
Apr 25 - Apollo Asteroid 11066 Sigurd Closest Approach To Earth (1.008 AU)
Apr 25 - Asteroid 15131 Alanalda Closest Approach To Earth (1.506 AU)
Apr 25 - Asteroid 7231 Porco Closest Approach To Earth (2.302 AU)
Apr 25 - 40th Anniversary (1977), Inaugural Flight of Stratospheric Observatory for Infrared Astronomy (SOFIA)
Apr 26 - Cassini, Distant Flyby of Janus, Atlas, Daphnis & Epimetheus
Apr 26 - Comet 73P-P/Schwassmann-Wachmann Perihelion (0.968 AU)
Apr 26 - Comet 67P/Churyumov-Gerasimenko At Opposition (3.738 AU)
Apr 26 - Comet P/2012 SB6 (Lemmon) At Opposition (4.294 AU)
Apr 26 - Comet P/2011 U2 (Bressi) At Opposition (4.626 AU)
Apr 26 - Comet P/2011 U2 (Bressi) Closest Approach To Earth (4.626 AU)
Apr 26 - Asteroid 1996 Adams Closest Approach To Earth (1.828 AU)
Apr 26 - Asteroid 3581 Alvarez Closest Approach To Earth (1.994 AU)
Apr 26 - Asteroid 55 Pandora Closest Approach To Earth (2.125 AU)
Apr 26 - Samantha Cristoforetti's 40th Birthday (1977)
Apr 26 - 55th Anniversary (1962), Kiel Meteorite Fall (Hit House in Germany)
Apr 26 - 55th Anniversary (1962), Ranger 4 Impacts Moon (1st US Spacecraft to Reach Surface of Celestrial Object)
Apr 26 - 55th Anniversary (1962), Cosmos-4 Launch (1st USSR Weather Satellite)
* Apr 27 - Comet C/2017 D3 (ATLAS) Perihelion (4.971 AU)
* Apr 27 - Amor Asteroid 2017 FS101 Near-Earth Flyby (0.077 AU)
Apr 27 - Asteroid 11195 Woomera Closest Approach To Earth (1.266 AU)
Apr 27 - Valeri Polyakov's 75th Birthday (1942)
Apr 28 - Mercury Passes 0.15 Degrees From Uranus
Apr 28 - Moon Occults Aldebaran
Apr 28 - Comet P/2013 R3 (Catalina-PANSTARRS) At Opposition (2.478 AU)
Apr 28 - Aten Asteroid 2016 HF2 Near-Earth Flyby (0.090 AU)
Apr 28 - Apollo Asteroid 469219 (2016 HO3) Closest Approach To Earth (0.139 AU)
Apr 28 - Atira Asteroid 413563 (2005 TG45) Closest Approach To Earth (0.532 AU)
Apr 28 - Asteroid 7367 Giotto Closest Approach To Earth (1.821 AU)
Apr 28 - Asteroid 3768 Monroe Closest Approach To Earth (2.700 AU)
Apr 29 - Astronomy Day
Apr 29 - Comet 73P-AG/Schwassmann-Wachmann Perihelion (0.967 AU)
Apr 29 - Comet 48P/Johnson Closest Approach To Earth (2.686 AU)
Apr 29 - Comet 204P/LINEAR-NEAT Closest Approach To Earth (2.917 AU)
Apr 29 - Comet C/2015 WZ (PANSTARRS) At Opposition (3.728 AU)
* Apr 29 - Apollo Asteroid 2017 FE157 Near-Earth Flyby (0.048 AU)
Apr 29 - Asteroid 30785 Greeley Closest Approach To Earth (1.280 AU)
Apr 29 - Asteroid 30928 Jefferson Closest Approach To Earth (1.808 AU)
Apr 29 - Asteroid 5249 Giza Closest Approach To Earth (1.792 AU)
Apr 29 - Kuiper Belt Object 2014 FC69 At Opposition (83.543 AU)
Apr 29 - Forest Moulton's 145th Birthday (1872)
* Apr 30 - NROL-76 Falcon 9 Launch
Apr 30 - Comet 73P-AR/Schwassmann-Wachmann Perihelion (0.968 AU)
Apr 30 - Comet C/2015 B1 (PANSTARRS) Closest Approach To Earth (5.503 AU)
Apr 30 - Asteroid 4319 Jackierobinson Closest Approach To Earth (1.271 AU)
Apr 30 - Asteroid 11277 Ballard Closest Approach To Earth (1.373 AU)
Apr 30 - Asteroid 5062 Glennmiller Closest Approach To Earth (1.630 AU)
Apr 30 - Asteroid 3665 Fitzgerald Closest Approach To Earth (1.678 AU)
Apr 30 - Asteroid 5811 Keck Closest Approach To Earth (1.702 AU)
* Apr 30 - Kuiper Belt Object 2010 EK139 At Opposition (35.762 AU)
Apr 30 - 50th Anniversary (1967), 1st Image of Earth Taken from Moon's Surface (Surveyor 3)
Apr 30 - 120th Anniversary (1897), Joseph John Thomson's Discovery of the Electron
Apr 30 - Carl Friedrich Gauss' 240th Birthday (1777)

May 2017
* May ?? - GSAT-19E LVM3 Launch
* May ?? - ViaSat 2/Eutelsat 172B Ariane 5 Launch
* May ?? - Cartosat 2E PSLV Launch
May 01 - Comet 73P-AQ/Schwassmann-Wachmann Perihelion (0.967 AU)
May 01 - Aten Asteroid 326290 Akhenaten Closest Approach To Earth (0.298 AU)
May 01 - Asteroid 16770 Angkorwat Closest Approach To Earth (1.734 AU)
May 01 - Asteroid 2404 Antarctica Closest Approach To Earth (1.778 AU)
May 01 - Kuiper Belt Object 42355 Typhon At Opposition (20.077 AU)
May 01 - 335th Anniversary (1682), Inauguration of the Paris Observatory
May 01 - Johann Adam Schall von Bell's 425th Birthday (1592)
May 02 - Cassini, Distant Flyby of Daphnis & Prometheus
May 02 - Comet 255P/Levy Perihelion (1.008 AU)
May 02 - Comet 211P/Hill Closest Approach To Earth (2.569 AU)
May 02 - Comet C/2013 C2 (Tenagra) Closest Approach To Earth (8.414 AU)
May 02 - Asteroid 10044 Squyres Closest Approach To Earth (2.072 AU)
May 02 - Asteroid 5816 Potsdam Closest Approach To Earth (2.332 AU)
May 03 - Comet 94P/Russell At Opposition (1.555 AU)
May 03 - Comet 130P/McNaught-Hughes At Opposition (1.740 AU)
May 03 - Atira Asteroid 164294 (2004 XZ130) Closest Approach To Earth (0.671 AU)
May 03 - Asteroid 4370 Dickens Closest Approach To Earth (1.560 AU)
May 03 - Don Yeomans' 75th Birthday (1942)
May 04 - Moon Occults Regulus
May 04 - Moon Occults Asteroid 16 Psyche
May 04 - Comet C/2013 C2 (Tenagra) At Opposition (8.414 AU)
May 04 - Asteroid 407 Arachne Occults HIP 75272 (6.5 Magnitude Star)
May 04 - Asteroid 9622 Terryjones Closest Approach To Earth (1.511 AU)
May 04 - 15th Anniversary (2002), AQUA Launch
May 04 - 50th Anniversary (1967), Lunar Orbiter 4 Launch
* May 05 - National Astronaut Day
May 05 - Space Day
May 05 - Mars Spring Equinox
* May 05 - GSAT 9 GSLV Mk.2 Launch
May 05 - Eta Aquarids Meteor Shower Peak
May 05 - Comet 73P-W/Schwassmann-Wachmann Closest Approach To Earth (0.181 AU)
May 05 - Comet 189P/NEAT At Opposition (0.709 AU)
May 05 - Comet 251P/LINEAR Closest Approach To Earth (0.883 AU)
May 05 - Comet 334P/NEAT Perihelion (4.185 AU)
May 05 - Comet 201P/LONEOS At Opposition (4.242 AU)
May 05 - Comet C/2015 B1 (PANSTARRS) At Opposition (5.506 AU)
May 05 - Asteroid 3 Juno Occults 2UCAC 29533817 (12.3 Magnitude Star)
* May 05 - Aten Asteroid 2017 HK1 Near-Earth Flyby (0.043 AU)
May 05 - Amor Asteroid 2009 HG Near-Earth Flyby (0.065 AU)
May 05 - Amor Asteroid 388838 (2008 EZ5) Near-Earth Flyby (0.082 AU)
May 05 - Apollo Asteroid 11311 Peleus Closest Approach To Earth (2.058 AU)
May 05 - Johann Benzenberg's 240th Birthday (1777)
May 06 - Comet P/2013 R3 (Catalina-PANSTARRS) Closest Approach To Earth (2.470 AU)
May 06 - Comet 107P/Wilson-Harrington Closest Approach To Earth (2.479 AU)
May 06 - Comet 207P/NEAT Closest Approach To Earth (2.606 AU)
May 06 - Asteroid 12373 Lancearmstrong Closest Approach To Earth (1.244 AU)
May 06 - Asteroid 8000 Isaac Newton Closest Approach To Earth (2.045 AU)
May 06 - Asteroid 2620 Santana Closest Approach To Earth (2.047 AU)
May 06 - Centaur Object 144908 (2004 YH32) At Opposition (11.782 AU)
May 06 - Kuiper Belt Object 2010 FX86 At Opposition (45.227 AU)
May 06 - Willem de Sitter's 145th Birthday (1872)
May 07 - Cassini, Distant Flyby of Titan
May 07 - Mercury Passes 2.2 Degrees From Uranus
May 07 - Comet 182P/LONEOS Closest Approach To Earth (1.195 AU)
May 07 - Comet 322P/SOHO At Opposition (3.904 AU)
May 07 - Comet P/2001 F1 (NEAT) Perihelion (4.187 AU)
May 07 - Apollo Asteroid 2015 VD1 Near-Earth Flyby (0.046 AU)
May 07 - 20th Anniversary (1997), Galileo, Ganymede 8 Flyby
May 07 - 25th Anniversary (1992), STS-49 Launch (Space Shuttle Endeavour, Intelsat VI Repair)
May 08 - Comet 73P-BL/Schwassmann-Wachmann Perihlion (0.967 AU)
May 08 - Comet 19P/Borrelly At Opposition (4.082 AU)
May 08 - Aten Asteroid 2016 CU246 Near-Earth Flyby (0.052 AU)
May 08 - Asteroid 18132 Spector Closest Approach To Earth (0.885 AU)
May 08 - Asteroid 17033 Rusty Closest Approach To Earth (1.266 AU)
May 08 - Asteroid 9620 Ericidle Closest Approach To Earth (1.537 AU)
May 08 - Asteroid 1224 Fantasia Closest Approach To Earth (1.727 AU)
May 08 - 55th Anniversary (1962), 1st Atlas Centaur Launch
May 08 - 145th Anniversary (1872), Dyalpur Meteorite Fall in India
May 09 - Cassini, Distant Flyby of Daphnis, Pan, Pandora & Titan
May 09 - Comet C/2015 ER61 (PANSTARRS) Perihelion (1.043 AU)
May 09 - Apollo Asteroid 1864 Daedalus Closest Approach To Earth (0.435 AU)
May 09 - Atira Asteroid 434326 (2004 JG6) Closest Approach To Earth (0.882 AU)
May 09 - Apollo Asteroid 2329 Orthos Closest Approach To Earth (0.936 AU)
May 09 - Asteroid 2554 Skiff Closest Approach To Earth (1.014 AU)
May 09 - Kuiper Belt Object 90568 (2004 GV9) At Opposition (38.509 AU)
May 10 - Apollo Asteroid 85585 Mjolnir Closest Approach To Earth (1.224 AU)
May 11 - Comet 194P/LINEAR Closest Approach To Earth (2.912 AU)
May 11 - Comet 204P/LINEAR-NEAT At Opposition (2.939 AU)
May 11 - Comet P/2012 TK8 (Tenagra) At Opposition (4.263 AU)
May 11 - Asteroid 117329 Spencer Closest Approach To Earth (1.240 AU)
May 11 - Asteroid 3197 Weissman Closest Approach To Earth (2.159 AU)
May 11 - Friedrich Schmiedl's 115th Birthday (1902)
May 12 - Apollo Asteroid 2016 LJ49 Near-Earth Flyby (0.062 AU)
May 12 - Atira Asteroid 2012 VE46 Closest Approach To Earth (0.536 AU)
May 12 - Apollo Asteroid 4769 Castalia Closest Approach To Earth (0.751 AU)
May 12 - Neptune Trojan 2010 TS191 At Opposition (29.692 AU)
May 13 - Comet 211P/Hill At Opposition (2.586 AU)
May 13 - Comet 36P/Whipple At Opposition (3.989 AU)
May 13 - Asteroid 10387 Bepicolombo Closest Approach To Earth (1.705 AU)
May 13 - Asteroid 91007 Ianfleming Closest Approach To Earth (1.765 AU)
May 13 - Asteroid 34901 Mauna Loa Closest Approach To Earth (2.796 AU)
May 14 - Comet C/2016 T1 (Matheny) Closest Approach To Earth (1.561 AU)
May 14 - Comet 255P/Levy Closest Approach To Earth (1.765 AU)
May 14 - Asteroid 7958 Leakey Closest Approach To Earth (0.976 AU)
May 14 - Asteroid 274020 Skywalker Closest Approach To Earth (2.089 AU)
May 14 - Asteroid 27500 Mandelbrot Closest Approach To Earth (2.621 AU)
* May 15 - Inmarsat 5 F4 Falcon 9 Launch
May 15 - Cassini, Distant Flyby of Ephimetheus, Pan, Aegaeon & Atlas
May 15 - Comet P/2015 D6 (Lemmon-PANSTARRS) Closest Approach To Earth (4.520 AU)
May 15 - Asteroid 58221 Boston Closest Approach To Earth (1.932 AU)
May 15 - Asteroid 3992 Wagner Closest Approach To Earth (2.027 AU)
May 15 - Asteroid 78756 Sloan Closest Approach To Earth (2.054 AU)
May 15 - Asteroid 100007 Peters Closest Approach To Earth (2.243 AU)
May 15 - 20th Anniversary (1997), STS-84 Launch (Space Shuttle Atlantis, Mir Space Station)
May 15 - Williamina Fleming's 160th Birthday (1857)
May 16 - Comet 73P-AE/Schwassmann-Wachmann Perihelion (0.966 AU)
May 16 - Comet 216P/LINEAR Closest Approach To Earth (2.294 AU)
May 16 - Apollo Asteroid 2012 EC Near-Earth Flyby (0.050 AU)
May 16 - Asteroid 93 Minerva Closest Approach To Earth (1.469 AU)
May 16 - Asteroid 6143 Pythagoras Closest Approach To Earth (1.879 AU)
May 16 - Asteroid 188534 Mauna Kea Closest Approach To Earth (1.941 AU)
May 16 - Forrest Petersen's 95th Birthday (1922)
May 17 - Mercury At Its Greatest Western Elongation (26 Degrees)
May 17 - Comet C/2017 A1 (PANSTARRS) Perihelion (2.290 AU)
May 17 - Asteroid 3 Juno Occults TYC 5141-02016-1 (10.7 Magnitude Star)
May 17 - Apollo Asteroid 4341 Poseidon Closest Approach To Earth (0.930 AU)
May 17 - Asteroid 5430 Luu Closest Approach To Earth (1.004 AU)
May 17 - Asteroid 144633 Georgecarroll Closest Approach To Earth (1.985 AU)
May 17 - Asteroid 241418 Darmstadt Closest Approach To Earth (2.466 AU)
May 17 - Kuiper Belt Object 65407 (2002 RP120) At Opposition (28.250 AU)
May 17 - Kuiper Belt Object 2015 KH162 At Opposition (58.435 AU)
May 18 - Comet 169P/NEAT At Opposition (2.600 AU)
May 18 - Apollo Asteroid 4581 Asciepius Closest Approach To Earth (0.365 AU)
May 18 - Asteroid 9969 Braille Closest Approach To Earth (0.818 AU)
May 18 - Asteroid 1225 Ariane Closest Approach To Earth (1.311 AU)
May 18 - Asteroid 2309 Mr. Spock Closest Approach To Earth (2.295 AU)
May 18 - Jeana Yeager's 65th Birthday (1952)
May 18 - Robert Verish's 70th Birthday (1947)
* May 19 - Juno, Jupiter Flyby
May 19 - Comet C/2016 A8 (LINEAR) Closest Approach To Earth (2.639 AU)
May 19 - Comet C/2014 OE4 (PANSTARRS) Closest Approach To Earth (6.247 AU)
May 19 - Asteroid 3153 Lincoln Closest Approach To Earth (1.680 AU)
May 19 - Asteroid 15058 Billcooke Closest Approach To Earth (2.608 AU)
May 20 - Moon Occults Neptune
May 20 - Comet C/2016 T1 (Matheny) At Opposition (1.578 AU)
May 20 - Comet 229P/Gibbs Perihelion (2.456 AU)
May 20 - Comet C/2014 W5 (Lemmon-PANSTARRS) At Opposition (4.219 AU)
May 20 - Comet C/2015 T2 (PANSTARRS) Perihelion (6.935 AU)
May 20 - Asteroid 20103 de Vico Closest Approach To Earth (1.277 AU)
May 20 - Asteroid 6542 Jacquescousteau Closest Approach To Earth (1.347 AU)
May 21 - Asteroid 3 Juno Occults TYC 5141-02154-1 (12.1 Magnitude Star)
May 21 - Asteroid 6268 Versailles Closest Approach To Earth (1.715 AU)
May 21 - 90th Anniversary (1927), Charles Linbergh Completes 1st Solo Non-Stop Transatlantic Flight
May 21 - Ruth Bancroft Law's 130th Birthday (1887)
May 21 - Gaspard-Gustave de Coriolis' 225th Birthday (1792)
May 22 - Cassini, Distant Flyby of Atlas, Janus & Aegaeon
May 22 - Comet 130P/McNaught-Hughes Closest Approach To Earth (1.691 AU)
May 22 - Comet P/2015 D6 (Lemmon-PANSTARRS) At Opposition (4.528 AU)
May 22 - Asteroid 1069 Planckia Closest Approach To Earth (2.001 AU)
May 22 - Asteroid 4115 Peternorton Closest Approach To Earth (2.019 AU)
May 22 - 5th Anniversary (2012), Katol Meteorite Fall (Hit Houses in India)
May 22 - 65th Anniversary (1952), Aerobee Launch (Monkeys Patricia & Mike)
May 23 - Apollo Asteroid 2015 VX105 Near-Earth Flyby (0.072 AU)
May 23 - Aten Asteroid 5381 Sekmet Closest Approach To Earth (0.802 AU)
May 23 - Asteroid 2521 Heidi Closest Approach To Earth (1.697 AU)
May 23 - Asteroid 4279 De Gasparis Closest Approach To Earth (1.842 AU)
May 23 - Asteroid 9499 Excalibur Closest Approach To Earth (1.937 AU)
May 23 - Lucy McFadden's 65th Birthday (1952)
May 24 - Cassini, Distant Flyby of Titan
May 24 - Plutino 38628 Huya At Opposition (27.595 AU)
May 24 - Plutino 2006 HJ123 At Opposition (33.410 AU)
May 24 - 55th Anniversary (1962), Aurora 7 Launch (Scott Carpenter)
May 25 - Towel Day - Annual Tribute to Douglas Adams
May 25 - Comet 65P/Gunn At Opposition (1.986 AU)
May 25 - Comet C/2016 B1 (NEOWISE) Closest Approach To Earth (2.895 AU)
May 25 - Asteroid 376 Geometria Closest Approach To Earth (0.902 AU)
May 25 - Asteroid 2074 Shoemaker Closest Approach To Earth (1.054 AU)
May 25 - Asteroid 15907 Robot Closest Approach To Earth (1.097 AU)
May 25 - Asteroid 9007 James Bond Closest Approach To Earth (1.747 AU)
May 26 - Comet 73P-AI/Schwassmann-Wachmann Near-Earth Flyby (0.023 AU)
May 26 - Comet 148P/Anderson-LINEAR At Opposition (3.799 AU)
May 26 - Asteroid 3017 Petrovic Occults HIP 68705 (6.3 Magnitude Star)
May 26 - Asteroid 163693 Atira Closest Approach To Earth (0.356 AU)
May 26 - Asteroid 38237 Roche Closest Approach To Earth (0.996 AU)
May 26 - Asteroid 2933 Amber Closest Approach To Earth (1.624 AU)
May 26 - 85th Anniversary (1932), Kuznetzovo Meteorite Fall in Russia
May 26 - Abraham de Moivre's 150th Birthday (1867)
May 27 - Aten Asteroid 2016 GK135 Near-Earth Flyby (0.074 AU)
May 27 - Apollo Asteroid 6063 Jason Near-Earth Flyby (0.099 AU)
May 27 - Asteroid 12413 Johnnyweir Closest Approach To Earth (1.356 AU)
May 28 - Cassini, Distant Flyby of Pandora, Mimas, Aegaeon & Prometheus
May 28 - Moon Occults Asteroid 433 Eros
May 28 - Comet 150P/LONEOS Closest Approach To Earth (2.156 AU)
May 28 - Comet 194P/LINEAR At Opposition (2.954 AU)
May 28 - Comet 110P/Hartley At Opposition (3.479 AU)
May 28 - Asteroid 11548 Jerrylewis Closest Approach To Earth (1.652 AU)
May 28 - Ruby Payne-Scott's 105th Birthday (1912)
* May 29 - Echostar 21 Proton-M/Briz-M P4 Launch
May 29 - Comet C/2015 V2 (Johnson) At Opposition (0.821 AU)
* May 29 - Comet C/2017 E3 (PANSTARRS) Perihelion (5.913 AU)
May 29 - Apollo Asteroid 2017 CS Near-Earth Flyby (0.020 AU)
May 29 - Apollo Asteroid 481532 (2007 LE) Near-Earth Flyby (0.082 AU)
May 29 - Asteroid 3066 McFadden Closest Approach To Earth (1.691 AU)
May 29 - Kuiper Belt Object 2007 JH43 At Opposition (39.549 AU)
May 29 - John F. Kennedy's 100th Birthday (1917)
May 29 - Johannes Winkler's 120th Birthday (1897)
May 30 - Comet 65P/Gunn Closest Approach To Earth (1.982 AU)
May 30 - Comet 207P/NEAT At Opposition (2.686 AU)
May 30 - Comet 137P/Shoemaker-Levy At Opposition (3.529 AU)
May 30 - Comet C/2016 E1 (PANSTARRS) Perihelion (8.178 AU)
May 30 - Asteroid 8249 Gershwin Closest Approach To Earth (1.132 AU)
May 30 - Asteroid 2004 Lexell Closest Approach To Earth (1.332 AU)
May 30 - Asteroid 4758 Hermitage Closest Approach To Earth (2.244 AU)
May 30 - Asteroid 4513 Louvre Closest Approach To Earth (2.252 AU)
May 30 - Asteroid 886 Washingtonia Closest Approach To Earth (2.384 AU)
* May 31 - CRS-11/NICER/CREAM Falcon 9 Launch (International Space Station)
* May 31 - Michibiki 2 H-2A Launch
May 31 - Moon Occults Regulus
May 31 - Comet 216P/LINEAR At Opposition (2.325 AU)
May 31 - Comet C/2015 TQ209 (LINEAR) At Opposition (2.749 AU)
May 31 - Atira Asteroid 2013 JX28 Closest Approach To Earth (1.145 AU)
May 31 - Asteroid 4487 Pocahontas Closest Approach To Earth (2.098 AU)
May 31 - Martin Schwarzschild's 105th Birthday (1912)
May 31 - Charles Abbot's 145th Birthday (1872)

June 2017
Jun ?? - Sentinel 5P Rokot/Briz-KM Launch
Jun ?? - Shijian 18 (SJ-18) CZ-5 Launch
* Jun ?? - Blagovest 1 Proton-M Briz-M Launch
* Jun ?? - Echostar 105/SES-11 Falcon 9 Launch
* Jun ?? - Intelsat 35e Falcon 9 Launch
* Jun ?? - Hard X-Ray Modulation Telescope (HXMT) CZ-2D Launch
* Jun ?? - BulgariaSat 1 Falcon 9 Launch
* Jun 01 - QZS-2 H-2A Launch
Jun 01 - Moon Occults Asteroid 16 Psyche
Jun 01 - Comet 71P/Clark At Opposition (0.598 AU)
Jun 01 - Comet P/2009 Q4 (Boattini) At Opposition (3.648 AU)
Jun 01 - Apollo Asteroid 418094 (2007 WV4) Near-Earth Flyby (0.020 AU)
Jun 01 - Asteroid 8088 Australia Closest Approach To Earth (1.483 AU)
Jun 01 - Apollo Asteroid 2101 Adonis Closest Approach To Earth (1.665 AU)
Jun 01 - 15th Anniversary (2002), 1st National Light Pollution Law (Czech Republic)
Jun 01 - Frank Whittle's 110th Birthday (1907)
Jun 02 - Comet C/2016 S1 (PANSTARRS) Closest Approach To Earth (2.218 AU)
Jun 02 - Asteroid 13188 Okinawa Closest Approach To Earth (1.060 AU)
Jun 02 - Asteroid 3709 Polypoites Closest Approach To Earth (4.601 AU)
Jun 02 - Kuiper Belt Object 278361 (2007 JJ43) At Opposition (40.059 AU)
Jun 02 - Clair Patterson's 95th Birthday (1922)
Jun 03 - Venus At Its Greatest Western Elongation (46 Degrees)
* Jun 03 - Comet 73P-W/Schwassmann-Wachmann Perihelion (0.965 AU)
Jun 03 - Comet 234P/LINEAR At Opposition (2.362 AU)
Jun 03 - Comet C/2015 T4 (PANSTARRS) At Opposition (3.277 AU)
Jun 03 - Asteroid 8844 (1990 QR2) Occults HIP 95408 (6.0 Magnitude Star)
Jun 03 - Apollo Asteroid 1685 Toro Closest Approach To Earth (1.362 AU)
Jun 03 - Asteroid 293934 MPIA Closest Approach To Earth (1.760 AU)
Jun 04 - Cassini, Distant Flyby of Pan & Epimetheus
Jun 04 - Comet 172P/Yeung Closest Approach To Earth (2.355 AU)
* Jun 04 - Asteroid 231307 Peterfalk Closest Approach To Earth (1.981 AU)
Jun 04 - Asteroid 4559 Strauss Closest Approach To Earth (2.127 AU)
Jun 04 - 15th Anniversary (2002), Mike Brown, Chad Trujillo's Discovery of 50000 Quaoar
Jun 05 - Comet C/2015 V2 (Johnson) Closest Approach To Earth (0.811 AU)
Jun 05 - Comet 172P/Yeung At Opposition (2.355 AU)
Jun 05 - Comet 169P/NEAT Closest Approach To Earth (2.552 AU)
Jun 05 - Asteroid 4150 Starr Closest Approach To Earth (1.057 AU)
Jun 05 - Asteroid 1941 Wild Closest Approach To Earth (3.134 AU)
Jun 05 - Jupiter Trojan Asteroid 5254 Ulysses Closest Approach To Earth (4.829 AU)
Jun 05 - 10th Anniversary (2007), MESSENGER, 2nd Venus Flyby
Jun 05 - 15th Anniversary (2002), STS-111 Launch (Space Shuttle Endeavour, International Space Station)
Jun 05 - John Bolton's 95th Birthday (1922)
Jun 06 - Comet C/2016 A8 (LINEAR) At Opposition (2.718 AU)
Jun 06 - Comet P/1996 R2 (Lagerkvist) At Opposition (2.973 AU)
Jun 06 - Apollo Asteroid 2012 HN13 Near-Earth Flyby (0.073 AU)
* Jun 06 - Asteroid 13070 Seanconnery Closest Approach To Earth (1.254 AU)
Jun 06 - Asteroid 1886 Lowell Closest Approach To Earth (1.315 AU)
Jun 06 - Asteroid 1756 Giacobini Closest Approach To Earth (1.938 AU)
Jun 06 - Asteroid 2046 Leningrad Closest Approach To Earth (2.217 AU)
Jun 06 - David Scott's 85th Birthday (1932)
Jun 06 - Ralph Baldwin's 105th Birthday (1912)
Jun 07 - Comet 75D/Kohoutek At Opposition (4.222 AU)
Jun 07 - Asteroid 7032 Hitchcock Closest Approach To Earth (1.476 AU)
Jun 07 - Asteroid 7291 Hyakutake Closest Approach To Earth (2.531 AU)
Jun 07 - Kuiper Belt Object 2010 KZ39 At Opposition (45.079 AU)
Jun 07 - George de Bothezat's 135th Birthday (1882)
Jun 07 - Charles Barkla's 140th Birthday (1877)
Jun 08 - World Oceans Day
Jun 08 - Comet 73P-BS/Schwassmann-Wachmann Near-Earth Flyby (0.056 AU)
Jun 08 - Comet 121P/Shoemaker-Holt At Opposition (4.267 AU)
Jun 08 - Apollo Asteroid 2011 PU1 Near-Earth Flyby (0.061 AU)
* Jun 08 - Apollo Asteroid 2063 Bacchus Closest Approach To Earth (1.417 AU)
Jun 08 - Asteroid 82332 Las Vegas Closest Approach To Earth (1.735 AU)
Jun 08 - Asteroid 9012 Benner Closest Approach To Earth (2.205 AU)
Jun 08 - 10th Anniversary (2007), STS-117 Launch (Space Shuttle Atlantis, International Space Station)
Jun 08 - Bruce McCandless' 80th Birthday (1937)
Jun 08 - Alfred Rordame's 155th Birthday (1862)
Jun 09 - Comet 138P/Shoemaker-Levy At Opposition (3.698 AU)
Jun 09 - Asteroid 5203 Pavarotti Closest Approach To Earth (0.935 AU)
Jun 09 - Asteroid 4766 Malin Closest Approach To Earth (1.916 AU)
Jun 09 - Neptune Trojan 2013 KY18 At Opposition (29.186 AU)
Jun 09 - 65th Anniversary (1952), Abee Meteorite Fall in Canada
Jun 09 - Johann Gottfied Galle's 205th Birthday (1812)
Jun 10 - Cassini, Distant Flyby of Pan & Janus
Jun 10 - Comet P/2011 A2 (Scotti) Closest Approach To Earth (2.229 AU)
Jun 10 - Comet 47P/Ashbrook-Jackson Perihelion (2.818 AU)
Jun 10 - Comet 268P/Bernardi At Opposition (4.110 AU)
* Jun 10 - Asteroid 7462 Grenoble Closest Approach To Earth (1.500 AU)
Jun 10 - Asteroid 5790 Nagasaki Closest Approach To Earth (1.529 AU)
Jun 10 - Asteroid 6373 Stern Closest Approach To Earth (1.638 AU)
Jun 10 - Asteroid 44016 Jimmypage Closest Approach To Earth (2.048 AU)
Jun 10 - Asteroid 115561 Frankherbert Closest Approach To Earth (2.103 AU)
Jun 10 - Asteroid 1578 Kirkwood Closest Approach To Earth (3.845 AU)
Jun 10 - Kuiper Belt Object 174567 Varda At Opposition (45.891 AU)
Jun 10 - Eugene Parker's 90th Birthday (1927)
Jun 11 - Comet 71P/Clark Closest Approach To Earth (0.590 AU)
Jun 11 - Comet 233P/La Sagra At Opposition (3.058 AU)
Jun 11 - Comet 200P/Larsen At Opposition (3.891 AU)
* Jun 11 - Asteroid 2830 Greenwich Closest Approach To Earth (1.295 AU)
Jun 11 - Asteroid 1772 Gagarin Closest Approach To Earth (1.444 AU)
Jun 11 - Asteroid 4305 Clapton Closest Approach To Earth (1.971 AU)
Jun 11 - Asteroid 2127 Tanya Closest Approach To Earth (2.117 AU)
* Jun 11 - Asteroid 1006 Lagrangea Closest Approach To Earth (2.554 AU)
Jun 11 - Charles Fabry's 150th Birthday (1867)
Jun 12 - 50th Anniversary (1967), Venera 4 Launch (Soviet Venus Lander)
Jun 12 - Comet C/2015 V2 (Johnson) Perihelion (1.637 AU)
Jun 12 - Comet 289P/Blanpain At Opposition (4.106 AU)
Jun 12 - Asteroid 1674 Groeneveld Occults HIP 42516 (6.4 Magnitude Star)
* Jun 12 - Amor Asteroid 1980 Tezcatlipoca Closest Approach To Earth (0.727 AU) * Jun 12 - Asteroid 397 Vienna Closest Approach To Earth (1.739 AU)
Jun 12 - Jupiter Trojan Asteroid 1143 Odysseus Closest Approach To Earth (4.680 AU)
Jun 12 - Paul Guldin's 440th Birthday (1577)
Jun 13 - Comet 73P-AI/Schwassmann-Wachmann Perihelion (0.964 AU)
* Jun 13 - Comet P/2017 G2 (PANSTARRS) Perihelion (2.846 AU)
Jun 13 - Comet P/1999 XN120 (Catalina) Perihelion (3.297 AU)
Jun 13 - Comet C/2015 O1 (PANSTARRS) At Opposition (3.552 AU)
Jun 13 - Comet 64P/Swift-Gehrels At Opposition (3.589 AU)
* Jun 13 - Apollo Asteroid 2017 FR2 Near-Earth Flyby (0.078 AU)
Jun 13 - Asteroid 3355 Onizuka Closest Approach To Earth (1.320 AU)
Jun 13 - Asteroid 51823 Rickhusband Closest Approach To Earth (2.645 AU)
* Jun 13 - Asteroid 1268 Libya Closest Approach To Earth (3.313 AU)
Jun 14 - 50th Anniversary (1967), Mariner 5 Launch (Venus Flyby Mission)
Jun 14 - Progress MS-6 Soyuz-2.1a Launch (International Space Station 67P)
Jun 14 - Asteroid 5066 Garradd Closest Approach To Earth (0.622 AU)
Jun 14 - Asteroid 3834 Zappafrank Closest Approach To Earth (1.156 AU)
Jun 14 - Asteroid 11334 Rio de Janeiro Closest Approach To Earth (1.359 AU)
Jun 14 - Asteroid 6546 Kaye Closest Approach To Earth (2.105 AU)
Jun 15 - Saturn At Opposition
Jun 15 - Comet P/2001 R6 (LINEAR-Skiff) At Opposition (2.890 AU)
Jun 15 - Comet P/1996 R2 (Lagerkvist) Closest Approach To Earth (2.961 AU)
Jun 15 - Asteroid 22903 Georgeclooney Closest Approach To Earth (1.349 AU)
Jun 15 - Asteroid 2952 Lilliputia Closest Approach To Earth (1.581 AU)
* Jun 15 - Asteroid 1691 Oort Closest Approach To Earth (2.574 AU)
Jun 15 - 265th Anniversary (1752), Ben Franklin's Kite-Flying Lightning Experiment
Jun 16 - Moon Occults Neptune
Jun 16 - Comet 150P/LONEOS At Opposition (2.204 AU)
Jun 16 - Comet P/2016 J3 At Opposition (3.464 AU)
Jun 16 - Apollo Asteroid 2010 VB1 Near-Earth Flyby (0.026 AU)
Jun 16 - Asteroid 1322 Coppernicus Closest Approach To Earth (0.863 AU)
Jun 16 - Asteroid 3949 Mach Closest Approach To Earth (1.168 AU)
* Jun 16 - Asteroid 3651 Friedman Closest Approach To Earth (1.218 AU)
Jun 16 - Amor Asteroid 9950 ESA Closest Approach To Earth (1.413 AU)
Jun 16 - Asteroid 16761 Hertz Closest Approach To Earth (1.735 AU)
* Jun 16 - Asteroid 12757 Yangtze Closest Approach To Earth (1.807 AU)
Jun 16 - Plutino 28978 Ixion At Opposition (38.699 AU)
Jun 17 - Iridium Next 11-20 Falcon 9 Launch
Jun 17 - Cassini, Distant Flyby of Prometheus, Atlas & Daphnis
Jun 17 - Asteroid 14967 Madrid Closest Approach To Earth (1.588 AU)
Jun 17 - Asteroid 2925 Beatty Closest Approach To Earth (1.645 AU)
Jun 17 - Asteroid 10867 Lima Closest Approach To Earth (1.704 AU)
Jun 17 - Hermann Goldschmidt's 215th Birthday (1802)
Jun 18 - Comet 73P-BS/Schwassmann-Wachmann Perihelion (0.963 AU)
Jun 18 - Comet 78P/Gehrels At Opposition (3.413 AU)
Jun 18 - Apollo Asteroid 471984 (2013 UE3) Near-Earth Flyby (0.049 AU)
* Jun 18 - Asteroid 10463 Bannister Closest Approach To Earth (2.604 AU)
Jun 19 - Comet 185P/Petriew At Opposition (1.725 AU)
Jun 19 - Comet 90P/Gehrels Perihelion (2.975 AU)
Jun 19 - Comet P/2005 R1 (NEAT) At Opposition (3.183 AU)
* Jun 19 - Asteroid 8564 Anomalocaris Closest Approach To Earth (2.152 AU)
Jun 19 - Asteroid 8084 Dallas Closest Approach To Earth (2.285 AU)
Jun 19 - Centaur Object 5145 Pholus At Opposition (26.390 AU)
Jun 20 - Comet 223P/Skiff At Opposition (3.337 AU)
Jun 20 - Comet P/2009 SK280 (Spacewatch-Hill) At Opposition (3.773 AU)
Jun 20 - Comet P/2010 U2 (Hill) At Opposition (3.968 AU)
Jun 20 - Apollo Asteroid 2015 YC1 Near-Earth Flyby (0.084 AU)
Jun 20 - Asteroid 477 Italia Closest Approach To Earth (1.191 AU)
Jun 20 - Aten Asteroid 2013 ND15 (Venus Trojan) Closest Approach To Earth (1.200 AU)
Jun 20 - Bill Bradfield's 90th Birthday (1927)
Jun 21 - Summer Solstice, 04:24 UT
Jun 21 - Comet C/2016 B1 (NEOWISE) At Opposition (2.971 AU)
Jun 21 - Asteroid 165347 Philplait Closest Approach To Earth (1.490 AU)
Jun 21 - Asteroid 3062 Wren Closest Approach To Earth (2.134 AU)
Jun 21 - Kuiper Belt Object 50000 Quaoar At Opposition (41.915 AU)
Jun 22 - Moon Occults Aldebaran
Jun 22 - Comet 227P/Catalina-LINEAR Perihelion (1.788 AU)
Jun 22 - Centaur Object 10199 Chariklo Occults 2UCAC 18533636 (14.6 Magnitude Star)
Jun 22 - Apollo Asteroid 2010 VZ11 Near-Earth Flyby (0.082 AU)
* Jun 22 - Aten Asteroid 2014 OL339 Closest Approach To Earth (0.282 AU)
* Jun 22 - Asteroid 10389 Robmanning Closest Approach To Earth (1.202 AU)
Jun 22 - Apollo Asteroid 24761 Ahau Closest Approach To Earth (1.455 AU)
* Jun 22 - Asteroid 78905 Seanokeefe Closest Approach To Earth (1.846 AU)
* Jun 22 - Asteroid 4969 Lawrence Closest Approach To Earth (2.846 AU)
Jun 22 - Asteroid 8373 Stephengould Closest Approach To Earth (3.064 AU)
Jun 22 - Ewen Whitaker's 95th Birthday (1922)

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