13062 Podarkes
| Discovery [1] | |
|---|---|
| Discovered by |
C. Shoemaker E. Shoemaker |
| Discovery site | Palomar Obs. |
| Discovery date | 19 April 1991 |
| Designations | |
| MPC designation | 13062 Podarkes |
Named after |
Podarkes (Greek mythology)[2] |
| 1991 HN · 1998 XC56 | |
|
Jupiter trojan[1] (Greek camp)[3] | |
| Orbital characteristics [1] | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 24.40 yr (8,911 days) |
| Aphelion | 5.2072 AU |
| Perihelion | 5.1101 AU |
| 5.1587 AU | |
| Eccentricity | 0.0094 |
| 11.72 yr (4,280 days) | |
| 270.15° | |
| 0° 5m 2.76s / day | |
| Inclination | 8.2317° |
| 91.027° | |
| 283.95° | |
| Jupiter MOID | 0.0135 AU |
| Jupiter Tisserand parameter | 2.9790 |
| Physical characteristics | |
| Dimensions |
28.958±0.358[4] 40 km (est. at 0.05)[5] |
| 0.084±0.018[4] | |
| 11.1[1] | |
|
| |
13062 Podarkes, provisional designation 1991 HN, is a Jupiter trojan from the Greek camp, approximately 29 kilometers in diameter. It was discovered by American astronomer couple Carolyn and Eugene Shoemaker at the U.S. Palomar Observatory, California, on 19 April 1991.[6]
The orbit of this Trojan asteroid is unstable.[7][8][9] It is orbiting in the leading Greek camp at Jupiter's L4 Lagrangian point, 60° ahead of its orbit (see Trojans in astronomy). It orbits the Sun at a distance of 5.1–5.2 AU once every 11 years and 9 months (4,280 days). Its orbit has an eccentricity of 0.01 and an inclination of 8° with respect to the ecliptic.[1] The first used precoveries were taken at Steward Observatory (Kitt Peak–Spacewatch), extending the asteroid's observation arc by just two weeks prior to its discovery.[6]
According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Podarkes measures 29.0 kilometers in diameter, and its surface has an albedo of 0.084,[4] while a generic diameter estimate, based on an absolute magnitude of 11.1 and an albedo at 0.05 gives a larger diameter of approximately 40 kilometers.[5] As of 2016, the asteroid's composition, rotation period and shape remain unknown.
The minor planet is named from Greek mythology after the Greek warrior Podarkes, who took 40 ships to the Trojan War. He is the son of Ares and brother of Protesilaos, after whom the Jupiter trojan, 3540 Protesilaos, is named.[2] Protesilaos was the first Greek to set foot on the shores of Troy and to die in the war. Naming citation was published on 13 October 2000 (M.P.C. 41386).[10]
References
- 1 2 3 4 5 "JPL Small-Body Database Browser: 13062 Podarkes (1991 HN)" (2015-08-14 last obs.). Jet Propulsion Laboratory. Retrieved 3 December 2016.
- 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (13062) Podarkes. Springer Berlin Heidelberg. p. 792. ISBN 978-3-540-00238-3. Retrieved 6 April 2016.
- ↑ "List of Jupiter Trojans". Minor Planet Center. 20 June 2016. Retrieved 4 August 2016.
- 1 2 3 Grav, T.; Mainzer, A. K.; Bauer, J. M.; Masiero, J. R.; Nugent, C. R. (November 2012). "WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy". The Astrophysical Journal. 759 (1): 10. Bibcode:2012ApJ...759...49G. doi:10.1088/0004-637X/759/1/49. Retrieved 3 December 2016.
- 1 2 "Absolute Magnitude (H)". NASA/JPL. Retrieved 6 April 2016.
- 1 2 "13062 Podarkes (1991 HN)". Minor Planet Center. Retrieved 6 April 2016.
- ↑ Celestial Mechanics and Dynamical Astronomy, Volume 78, Numbers 1-4, 125-136, DOI: 10.1023/A:1011120413687
- ↑ Celestial Mechanics and Dynamical Astronomy, Volume 73, Numbers 1-4, 117-126, DOI: 10.1023/A:1008338811969
- ↑ Bonnie A. Steves & A. J. Maciejewski (2001). The restless universe: applications of gravitational n-body dynamics to planetary, stellar and galactic systems : proceedings of the fifty-fourth Scottish Universities Summer School in Physics, Blair Atholl, 23 July - 5 August 2000. Scottish Graduate. Scottish Universities Summer School in Physics, Institute of Physics. ISBN 9780750308229.
- ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 May 2016.
- Robutel, P. and Gabern, F. (2006), The resonant structure of Jupiter's Trojan asteroids – I
. Long-term stability and diffusion . Monthly Notices of the Royal Astronomical Society, 372: 1463–1482. doi: 10.1111/j.1365-2966.2006.11008.x
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (10001)-(15000) – Minor Planet Center
- 13062 Podarkes at the JPL Small-Body Database
