 Hubble Space Telescope image of 354P/LINEAR with dusty impact debris on 2 February 2010 | |
| Discovery[1] | |
|---|---|
| Discovered by | LINEAR (704) |
| Discovery date | 6 January 2010 |
| Designations | |
| Orbital characteristics[3] | |
| Epoch 13 October 2010 (JD 2455482.5) | |
| Aphelion | 2.58 AU (Q) |
| Perihelion | 2.01 AU (q) |
| 2.29 AU (a) | |
| Eccentricity | 0.1246 |
| 3.47 yr | |
| 88.9° (M) | |
| Inclination | 5.25° |
| 320° | |
| 2023-Oct-13[4] | |
| 133° | |
| Physical characteristics | |
| Dimensions | 172.4 × 88.8 m[5] |
| 123.8+33.6 −18.4 m[5] | |
| 11.36±0.02 h | |
| Albedo | unknown |
| ~18-20[1] | |
| 21.3±0.6[6] | |
354P/LINEAR, provisionally designated P/2010 A2 (LINEAR), is a small main-belt asteroid that was impacted by another asteroid sometime before 2010. It was discovered by the Lincoln Near-Earth Asteroid Research (LINEAR) at Socorro, New Mexico on 6 January 2010. The asteroid possesses a dusty, X-shaped, comet-like debris trail that has remained nearly a decade since impact.[5] This was the first time a small-body collision had been observed; since then, minor planet 596 Scheila has also been seen to undergo a collision, in late 2010. The tail is created by millimeter-sized particles being pushed back by solar radiation pressure.[7][8]
- ^ a b Marsden, Brian G. (7 January 2010). "MPEC 2010-A32 : COMET P/2010 A2 (LINEAR)". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 14 January 2010.
- ^ "When is a comet not a comet? Rosetta finds out". ESA News. 13 October 2010. Retrieved 15 October 2010.
- ^ "JPL Small-Body Database Browser: P/2010 A2 (LINEAR)" (last observation: 2012-10-14; arc: 2.83 years). Retrieved 3 February 2010.
- ^ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive.)
- ^ a b c Cite error: The named reference
Kim2017was invoked but never defined (see the help page). - ^ This absolute asteroidal V magnitude has been calculated using comet/asteroid magnitude analysis software "Comet for Windows" from value of R = 23.0±0.5 taken from IAU Circular No. 9109. The mean V-R color index for asteroids is +0.4±0.1.
- ^ HST Sees Evidence of Colliding Asteroids, Astronomy Today, Feb.2, 2010
- ^ Jewitt, David C. "P/2010 A2 (LINEAR): Possible Asteroid Smash". UCLA (Department of Earth and Space Sciences). Retrieved 3 February 2010.