Discovery | |
---|---|
Discovered by | Spacewatch |
Discovery site | Kitt Peak Obs. |
Discovery date | 8 October 2004 (discovery: first observed only) |
Designations | |
MPC designation | 2004 TG10 |
Minor planet category | NEO · Apollo · PHA |
Orbital characteristics | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 10.16 yr (3,712 days) |
Aphelion | 4.1597 AU |
Perihelion | 0.3086 AU |
Semi-major axis | 2.2341 AU |
Eccentricity | 0.8619 |
Orbital period (sidereal) | 3.34 yr (1,220 days) |
Mean anomaly | 278.07° |
Mean motion | 0° 17 42.36 / day |
Inclination | 4.1802° |
Longitude of ascending node | 205.10° |
Argument of perihelion | 317.37° |
Earth MOID | 0.0225 AU · 8.8 LD |
Jupiter MOID | 0.8877 AU |
Physical characteristics | |
Dimensions | 0.35–0.78 km 1.316±0.605 km |
Geometric albedo | 0.018±0.037 |
Absolute magnitude (H) | 19.4 |
2004 TG10, is an eccentric asteroid, classified as near-Earth object and potentially hazardous asteroid of the Apollo group. First observed by the Spacewatch survey on 8 October 2004, it may be a fragment of Comet Encke and is the source of the Northern Taurids meteor shower seen annually in November and the June Beta Taurids. The asteroid may be larger than one kilometer in diameter.
Orbit
2004 TG10 orbits the Sun at a distance of 0.3–4.2 AU once every 3 years and 4 months (1,220 days). Its orbit has an eccentricity of 0.86 and an inclination of 4° with respect to the ecliptic.
It has an Earth minimum orbital intersection distance of 0.0225 AU (3,370,000 km), which corresponds to 8.8 lunar distances.
Physical characteristics
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 1.316 kilometers in diameter and its surface has an exceptionally low albedo of 0.018, while Porubcan estimates a diameter of 350 to 780 meters, based on an albedo of 0.25 to 0.05, which typically covers most S-type and C-type asteroids.
AU | 2004 TG10 | Encke |
---|---|---|
Semi-major axis | 2.24 | 2.21 |
Perihelion | 0.313 | 0.338 |
Aphelion | 4.17 | 4.09 |
Eccentricity | 0.859 | 0.847 |
Longitude of perihelion | 162.455° | 161.113° |
References
- ^ "JPL Small-Body Database Browser: (2004 TG10)" (2014-12-04 last obs.). Jet Propulsion Laboratory. Retrieved 29 July 2017.
- ^ "2004 TG10". Minor Planet Center. Retrieved 29 July 2017.
- ^ Porubčan, V.; Kornoš, L.; Williams, I. P. (June 2006). "The Taurid complex meteor showers and asteroids". Contributions of the Astronomical Observatory Skalnaté Pleso. 36: 103–117. arXiv:0905.1639. Bibcode:2006CoSka..36..103P. Retrieved 29 July 2017.
- ^ Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 29 July 2017.
- Beth Dalbey (24 October 2017). "Taurids Meteor Shower Fireballs: Peak Dates, What To Expect". Retrieved 11 November 2017.
- Meteor showers and their parent comets pg 470 by Peter Jenniskens
- "JPL Small-Body Database Browser: 2P/Encke" (last observation: 2008-09-30). Retrieved 19 May 2009.
External links
- 2004 TG10 at NeoDyS-2, Near Earth Objects—Dynamic Site
- 2004 TG10 at ESA–space situational awareness
- 2004 TG10 at the JPL Small-Body Database
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