Astronomy:2002 JE9
| Discovery[1] | |
|---|---|
| Discovered by | LINEAR (704) 1.0-m Reflector |
| Discovery date | 6 May 2002 |
| Designations | |
| 2002 JE9 | |
| Minor planet category | Apollo NEO, PHA[2] |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5)[2] | |
| Uncertainty parameter 0 | |
| Observation arc | 4014 days (10.99 yr) |
| |{{{apsis}}}|helion}} | 1.5126 astronomical unit|AU (226.28 Gm) (Q) |
| |{{{apsis}}}|helion}} | 0.62292 AU (93.188 Gm) (q) |
| 1.0678 AU (159.74 Gm) (a) | |
| Eccentricity | 0.41662 (e) |
| Orbital period | 1.10 yr (403.01 d) |
| Mean anomaly | 221.24° (M) |
| Mean motion | 0° 53m 35.772s /day (n) |
| Inclination | 8.8300° (i) |
| Longitude of ascending node | 200.08° (Ω) |
| 255.43° (ω) | |
| Earth MOID | 0.00548821 AU (821,025 km) |
| Jupiter MOID | 3.70534 AU (554.311 Gm) |
| Physical characteristics | |
| Dimensions | ~200 meters (660 ft)[3] |
| Absolute magnitude (H) | 21.2[2] |
2002 JE9 (also written 2002 JE9) is an Apollo near-Earth asteroid and potentially hazardous object.[2] It has a well determined orbit with an observation arc of 10 years and an Uncertainty Parameter of 1.[2] It was removed from the Sentry Risk Table on 10 May 2002.[4] 2002 JE9 was discovered on 6 May 2002 by the Lincoln Near-Earth Asteroid Research (LINEAR) project using a 1.0-metre (39 in) Reflecting telescope; at the time of discovery, the asteroid possessed an apparent magnitude of 19.1.[1]
The asteroid has an estimated diameter of about 200 meters (660 ft)[3] based on an absolute magnitude of 21.3.[2] 2002 JE9 is considered significant due to having previously passed closer to the Earth; on 11 April 1971, it passed Earth at a distance of 0.0015 astronomical unit|AU (220,000 km; 140,000 mi).[5][6] 2002 JE9 is one of the largest objects known to have passed inside the orbit of the moon. During the close approach in 1971 the asteroid reached about apparent magnitude 10,[7] about the same brightness as Saturn's moon Iapetus.[8]
The asteroid will pass 0.0049 AU (730,000 km; 460,000 mi) from Venus on 25 November 2021.[5][6]
| Asteroid | Date | Nominal approach distance (LD) | Min. distance (LD) | Max. distance (LD) | Absolute magnitude (H) | Size (meters) |
|---|---|---|---|---|---|---|
| (152680) 1998 KJ9 | 1914-12-31 | 0.606 | 0.604 | 0.608 | 19.4 | 279–900 |
| (458732) 2011 MD5 | 1918-09-17 | 0.911 | 0.909 | 0.913 | 17.9 | 556–1795 |
| (163132) 2002 CU11 | 1925-08-30 | 0.903 | 0.901 | 0.905 | 18.5 | 443–477 |
| 2002 JE9 | 1971-04-11 | 0.616 | 0.587 | 0.651 | 21.2 | 122–393 |
| 2012 TY52 | 1981-11-04 | 0.818 | 0.813 | 0.823 | 21.4 | 111–358 |
| 2017 VW13 | 2001-11-08 | 0.454 | 0.318 | 3.436 | 20.7 | 153–494 |
| (308635) 2005 YU55 | 2011-11-08 | 0.845 | 0.845 | 0.845 | 21.9 | 320–400 |
| (153814) 2001 WN5 | 2028-06-26 | 0.647 | 0.647 | 0.647 | 18.2 | 921–943 |
| 99942 Apophis | 2029-04-13 | 0.0981 | 0.0963 | 0.1000 | 19.7 | 310–340 |
| 2005 WY55 | 2065-05-28 | 0.865 | 0.856 | 0.874 | 20.7 | 153–494 |
| (308635) 2005 YU55 | 2075-11-08 | 0.592 | 0.499 | 0.752 | 21.9 | 320–400 |
| (456938) 2007 YV56 | 2101-01-02 | 0.621 | 0.615 | 0.628 | 21.0 | 133–431 |
| 101955 Bennu | 2135-09-25 | 0.780 | 0.308 | 1.406 | 20.19 | 472–512 |
| (153201) 2000 WO107 | 2140-12-01 | 0.634 | 0.631 | 0.637 | 19.3 | 427–593 |
| (85640) 1998 OX4 | 2148-01-22 | 0.771 | 0.770 | 0.771 | 21.1 | 127–411 |
| 2011 LT17 | 2156-12-16 | 0.998 | 0.955 | 1.215 | 21.6 | 101–327 |
References
- ↑ 1.0 1.1 "MPEC 2002-J25 : 2002 JE9". IAU Minor Planet Center. 8 May 2002. http://www.minorplanetcenter.net/mpec/K02/K02J25.html. Retrieved 8 November 2011. (K02J09E)
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 "JPL Small-Body Database Browser: (2002 JE9)". Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002JE9. Retrieved 30 March 2016.
- ↑ 3.0 3.1 "Near Earth Asteroids (NEAs)". International Astronomical Union. 13 October 2011. http://www.iau.org/public/nea/. Retrieved 30 October 2011.
- ↑ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. http://neo.jpl.nasa.gov/risk/removed.html. Retrieved 19 March 2012.
- ↑ 5.0 5.1 "JPL Close-Approach Data: (2002 JE9)". http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002JE9;cad=1#cad. Retrieved 8 November 2011.
- ↑ 6.0 6.1 "NEODyS-2 Close Approaches for 2002JE9". Near Earth Objects - Dynamic Site. http://newton.spacedys.com/neodys/index.php?pc=1.1.8&n=2002JE9. Retrieved 8 November 2011.
- ↑ "2002JE9 Ephemerides for 11 April 1971". NEODyS (Near Earth Objects - Dynamic Site). http://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2002JE9&oc=500&y0=1971&m0=04&d0=11&h0=0&mi0=0&y1=1971&m1=04&d1=12&h1=0&mi1=0&ti=15&tiu=minutes. Retrieved 8 November 2011.
- ↑ "Classic Satellites of the Solar System". Observatorio ARVAL. Archived from the original on 31 July 2010. https://web.archive.org/web/20100731193653/http://www.oarval.org/ClasSaten.htm. Retrieved 25 June 2010.
External links
- 2002 JE9 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- 2002 JE9 at ESA–space situational awareness
- 2002 JE9 at the JPL Small-Body Database
| Preceded by (163132) 2002 CU11 |
Large NEO Earth close approach (inside the orbit of the Moon) 11 April 1971 |
Succeeded by 2002 MN |
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