| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Taunton, Massachusetts |
| Discovery date | 26 October 1906 |
| Designations | |
| MPC designation | (620) Drakonia |
| Alternative designations | 1906 WE |
| Orbital characteristics | |
| 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) |
| Semi-major axis | 2.4356 AU (364.36 Gm) |
| Eccentricity | 0.13523 |
| Orbital period (sidereal) | 3.80 yr (1388.4 d) |
| Mean anomaly | 8.1809° |
| Mean motion | 0° 15 33.444 / day |
| Inclination | 7.7394° |
| Longitude of ascending node | 0.017298° |
| Argument of perihelion | 336.486° |
| Physical characteristics | |
| Synodic rotation period | 5.49 h 5.487 h (0.2286 d) |
| Absolute magnitude (H) | 11.28 |
620 Drakonia is a minor planet, specifically an asteroid orbiting in the asteroid belt. 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.
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.
References
- ^ "620 Drakonia (1906 WE)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
- ^ 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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