620 Drakonia
| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Taunton, Massachusetts |
| Discovery date | 26 October 1906 |
| Designations | |
MPC designation | (620) Drakonia |
| 1906 WE | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.05 yr (31065 d) |
| Aphelion | 2.7650 AU (413.64 Gm) |
| Perihelion | 2.1063 AU (315.10 Gm) |
| 2.4356 AU (364.36 Gm) | |
| Eccentricity | 0.13523 |
| 3.80 yr (1388.4 d) | |
| 8.1809° | |
| 0° 15m 33.444s / day | |
| Inclination | 7.7394° |
| 0.017298° | |
| 336.486° | |
| Physical characteristics | |
Synodic rotation period | 5.49 h[2] 5.487 h (0.2286 d)[1] |
Absolute magnitude (H) | 11.28 |
620 Drakonia is a minor planet orbiting the Sun. It was discovered October 26, 1906, in Taunton, Massachusetts, by American astronomer Joel Hastings Metcalf and given the preliminary designation 1906 WE. It may have been named for Drake University.[3]
Photometric observations at the Palmer Divide Observatory in Colorado Springs, Colorado, in 2001 were used to build a light curve for this object. The asteroid displayed a rotation period of 5.49 ± 0.01 hours and a brightness variation of 0.56 ± 0.02 in magnitude.[2]
References[]
- ^ a b "620 Drakonia (1906 WE)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
- ^ a b Warner, Brian D. (January 2011), "Upon Further Review: IV. An Examination of Previous Lightcurve Analysis from the Palmer Divide Observatory", The Minor Planet Bulletin, vol. 38, no. 1, pp. 52–54, Bibcode:2011MPBu...38...52W.
- ^ Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names (6th ed.), Springer, p. 61, ISBN 3642297188.
External links[]
- Lightcurve plot of 620 Drakonia, Palmer Divide Observatory, B. D. Warner (2001)
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 620 Drakonia at AstDyS-2, Asteroids—Dynamic Site
- 620 Drakonia at the JPL Small-Body Database
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Categories:
- Minor planet object articles (numbered)
- Background asteroids
- Discoveries by Joel Hastings Metcalf
- Named minor planets
- E-type asteroids (Tholen)
- Astronomical objects discovered in 1906
- Main-belt-asteroid stubs