Astronomy:(237442) 1999 TA10
| Discovery[1] | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | Lincoln Laboratory ETS |
| Discovery date | 5 October 1999 |
| Designations | |
| (237442) 1999 TA10 | |
| Minor planet category | Amor asteroid (NEO)[2] |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 5592 days (15.31 yr) |
| |{{{apsis}}}|helion}} | 1.8695 astronomical unit|AU (279.67 Gm) (Q) |
| |{{{apsis}}}|helion}} | 1.1419 AU (170.83 Gm) (q) |
| 1.5057 AU (225.25 Gm) (a) | |
| Eccentricity | 0.24161 (e) |
| Orbital period | 1.85 yr (674.85 d) |
| Mean anomaly | 342.45° (M) |
| Mean motion | 0° 32m 0.42s / day (n) |
| Inclination | 20.843° (i) |
| Longitude of ascending node | 214.68° (Ω) |
| 84.791° (ω) | |
| Earth MOID | 0.303797 AU (45.4474 Gm) |
| Physical characteristics | |
| Dimensions | 500–1500 meters[2][3] |
| Rotation period | 14 h (0.58 d) |
| Sidereal rotation period | 14 hr(?)[2] |
| Apparent magnitude | 16.77 (close approach) to 22.29 |
| Absolute magnitude (H) | 18.1[2] |
(237442) 1999 TA10, provisionally known as 1999 TA10, is a near-Earth object (NEO) from the Amor asteroid group.[2] It is suspected of being an inner fragment of the differentiated asteroid 4 Vesta.[4]
Given an absolute magnitude (H) of 17.9,[2] and that the albedo is unknown, this NEO could vary from 500 to 1500 meters in diameter.[3]
1999 TA10 was discovered by LINEAR at Lincoln Laboratory ETS on 5 October 1999 at apparent magnitude 17.7,[1] when it was only 0.39 AU from Earth.[5] In 2010, it came within 0.3 AU of Earth.[5] During the 2010 close approach, NASA Infrared Telescope Facility (NASA IRTF) studies suggested that 1999 TA10 originated from the interior of Vesta.[4] The next close approach will be in 2023.[5] In 2086, it will come within 0.017 astronomical unit|AU (2,500,000 km; 1,600,000 mi) of Mars.[5]
See also
References
- ↑ 1.0 1.1 "MPEC 1999-T43 : 1999 TA10". IAU Minor Planet Center. 1999-10-11. https://minorplanetcenter.net/mpec/J99/J99T43.html. Retrieved 2011-01-12.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 "JPL Small-Body Database Browser: 237442 (1999 TA10)". https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999TA10. Retrieved 7 April 2016.
- ↑ 3.0 3.1 "Conversion of Absolute Magnitude to Diameter". Minor Planet Center. Archived from the original on 27 October 2010. https://archive.today/20101027093630/http://www.minorplanetcenter.org/iau/lists/Sizes.html. Retrieved 2011-01-12.
- ↑ 4.0 4.1 "A look into Vesta's interior". Max Planck Society. 2011-01-06. Archived from the original on 13 January 2011. https://web.archive.org/web/20110113015844/http://www.mpg.de/877913/Pressrelease20110106. Retrieved 2011-01-07.
- ↑ 5.0 5.1 5.2 5.3 "JPL Close-Approach Data: 237442 (1999 TA10)". https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1999TA10;cad=1#cad. Retrieved 2011-01-12.
External links
- (237442) 1999 TA10 at NeoDyS-2, Near Earth Objects—Dynamic Site
- Ephemeris · Obs prediction · Orbital info · MOID · Proper elements · Obs info · Close · Physical info · NEOCC
- (237442) 1999 TA10 at ESA–space situational awareness
- (237442) 1999 TA10 at the JPL Small-Body Database
 |  |
