(612358) 2002 JE9
| Discovery[1] | |
|---|---|
| Discovered by | LINEAR (704) 1.0-m Reflector |
| Discovery date | 6 May 2002 |
| Designations | |
| 2002 JE9 | |
| 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) |
| Aphelion | 1.5126 AU (226,280,000 km) (Q) |
| Perihelion | 0.62292 AU (93,188,000 km) (q) |
| 1.0678 AU (159,740,000 km) (a) | |
| Eccentricity | 0.41662 (e) |
| 1.10 yr (403.01 d) | |
| 221.24° (M) | |
| 0° 53m 35.772s /day (n) | |
| Inclination | 8.8300° (i) |
| 200.08° (Ω) | |
| 255.43° (ω) | |
| Earth MOID | 0.00548821 AU (821,025 km) |
| Jupiter MOID | 3.70534 AU (554,311,000 km) |
| Physical characteristics | |
| Dimensions | ~200 meters (660 ft)[3] |
| 21.2[2] | |
(612358) 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 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年12月31日 | 0.606 | 0.604 | 0.608 | 19.4 | 279–900 |
| (458732) 2011 MD5 | 1918年09月17日 | 0.911 | 0.909 | 0.913 | 17.9 | 556–1795 |
| (163132) 2002 CU11 | 1925年08月30日 | 0.903 | 0.901 | 0.905 | 18.5 | 443–477 |
| 2002 JE9 | 1971年04月11日 | 0.616 | 0.587 | 0.651 | 21.2 | 122–393 |
| 2012 TY52 | 1981年11月04日 | 0.818 | 0.813 | 0.823 | 21.4 | 111–358 |
| 2017 VW13 | 2001年11月08日 | 0.454 | 0.318 | 3.436 | 20.7 | 153–494 |
| (308635) 2005 YU55 | 2011年11月08日 | 0.845 | 0.845 | 0.845 | 21.9 | 320–400 |
| (153814) 2001 WN5 | 2028年06月26日 | 0.647 | 0.647 | 0.647 | 18.2 | 921–943 |
| 99942 Apophis | 2029年04月13日 | 0.0981 | 0.0963 | 0.1000 | 19.7 | 310–340 |
| 2005 WY55 | 2065年05月28日 | 0.865 | 0.856 | 0.874 | 20.7 | 153–494 |
| (308635) 2005 YU55 | 2075年11月08日 | 0.592 | 0.499 | 0.752 | 21.9 | 320–400 |
| (456938) 2007 YV56 | 2101年01月02日 | 0.621 | 0.615 | 0.628 | 21.0 | 133–431 |
| 101955 Bennu | 2135年09月25日 | 0.780 | 0.308 | 1.406 | 20.19 | 472–512 |
| (153201) 2000 WO107 | 2140年12月01日 | 0.634 | 0.631 | 0.637 | 19.3 | 427–593 |
| (85640) 1998 OX4 | 2148年01月22日 | 0.771 | 0.770 | 0.771 | 21.1 | 127–411 |
| 2011 LT17 | 2156年12月16日 | 0.998 | 0.955 | 1.215 | 21.6 | 101–327 |
References
[edit ]- ^ a b "MPEC 2002-J25 : 2002 JE9". IAU Minor Planet Center. 8 May 2002. Retrieved 8 November 2011. (K02J09E)
- ^ a b c d e f g "JPL Small-Body Database Browser: (2002 JE9)" (last observation: 2011年07月21日; arc: 10.14 years). Jet Propulsion Laboratory . Retrieved 30 March 2016.
- ^ a b "Near Earth Asteroids (NEAs)" (Version 20.1). International Astronomical Union. 13 October 2011. Retrieved 30 October 2011.
- ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Archived from the original on 2 June 2002. Retrieved 19 March 2012.
- ^ a b "JPL Close-Approach Data: (2002 JE9)" (last observation: 2011年07月21日; arc: 10.14 years). Retrieved 8 November 2011.
- ^ a b "NEODyS-2 Close Approaches for 2002JE9". Near Earth Objects - Dynamic Site. Retrieved 8 November 2011.
- ^ "2002JE9 Ephemerides for 11 April 1971". NEODyS (Near Earth Objects - Dynamic Site). Retrieved 8 November 2011.
- ^ "Classic Satellites of the Solar System". Observatorio ARVAL. Archived from the original on 31 July 2010. Retrieved 25 June 2010.
External links
[edit ]- (612358) 2002 JE9 at NeoDyS-2, Near Earth Objects—Dynamic Site
- (612358) 2002 JE9 at ESA–space situational awareness
- (612358) 2002 JE9 at the JPL Small-Body Database