(374158) 2004 UL
| Discovery [1] | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | Lincoln Lab's ETS |
| Discovery date | 18 October 2004 |
| Designations | |
| MPC designation | (374158) 2004 UL |
| 2004 UL | |
| Apollo · NEO · PHA · Mercury crosser · Venus crosser · Earth crosser · Mars crosser | |
| Orbital characteristics [2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 13.12 yr (4,792 days) |
| Aphelion | 2.4400 AU |
| Perihelion | 0.0928 AU |
| 1.2664 AU | |
| Eccentricity | 0.9267 |
| 1.43 yr (521 days) | |
| 44.306° | |
| 0° 41m 29.76s / day | |
| Inclination | 23.780° |
| 39.582° | |
| 149.56° | |
| Earth MOID | 0.0185 AU |
| Physical characteristics | |
| Dimensions |
0.5–1.2 km[3] 0.516 km (calculated)[4] |
| 38±2 h[5] | |
| 0.20 (assumed)[4] | |
| S [4] | |
|
18.77 (R)[lower-alpha 1] 18.8[2][4] | |
|
| |
(374158) 2004 UL is an outstandingly eccentric asteroid, classified as near-Earth object and potentially hazardous asteroid.[1] It is known for having the second-smallest perihelion of any known asteroid, after (137924) 2000 BD19. It measures between 0.5 and 1.2 kilometers in diameter and was discovered by the Lincoln Near-Earth Asteroid Research (LINEAR) at Lincoln Lab's ETS on 18 October 2004.[1]
The stony S-type asteroid orbits the Sun at a distance of 0.1–2.4 AU once every 1 years and 5 months (521 days). Its orbit has an eccentricity of 0.93 and an inclination of 24° with respect to the ecliptic.[2]
In October 2014, a rotational light-curve for this asteroid was obtained from photometric observations by American astronomer Brian D. Warner at the Palmer Divide Station, California. It gave a relatively slow rotation period of 38±2 hours with a high brightness variation of 1.2 in magnitude (U=2).[5]
Due to its orbit, it is also a Mercury-crosser, Venus-crosser, Apollo and Mars-crosser.
References
- ↑ Jewitt (Jewitt-2013) . Abs. magnitude of 18.77 (R). Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (374158)
- 1 2 3 "374158 (2004 UL)". Minor Planet Center. Retrieved 18 August 2016.
- 1 2 3 "JPL Small-Body Database Browser: 374158 (2004 UL)" (2014-11-01 last obs.). Jet Propulsion Laboratory. Retrieved 18 August 2016.
- ↑ "NEODyS (374158) 2004UL". Near Earth Objects - Dynamic Site. Retrieved 2014-03-07.
- 1 2 3 4 "LCDB Data for (374158)". Asteroid Lightcurve Database (LCDB). Retrieved 18 August 2016.
- 1 2 Warner, Brian D. (April 2015). "Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 October-December". The Minor Planet Bulletin. 42 (2): 115–127. Bibcode:2015MPBu...42..115W. ISSN 1052-8091. Retrieved 18 August 2016.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (370001)-(375000) – Minor Planet Center
- (374158) 2004 UL at the JPL Small-Body Database
