Astronomy:620 Drakonia
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Short description: Asteroid
| Discovery | |
|---|---|
| Discovered by | Joel Hastings Metcalf |
| Discovery site | Taunton, Massachusetts |
| Discovery date | 26 October 1906 |
| Designations | |
| (620) Drakonia | |
| 1906 WE | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.05 yr (31065 d) |
| |{{{apsis}}}|helion}} | 2.7650 astronomical unit|AU (413.64 Gm) |
| |{{{apsis}}}|helion}} | 2.1063 AU (315.10 Gm) |
| 2.4356 AU (364.36 Gm) | |
| Eccentricity | 0.13523 |
| Orbital period | 3.80 yr (1388.4 d) |
| Mean anomaly | 8.1809° |
| Mean motion | 0° 15m 33.444s / day |
| Inclination | 7.7394° |
| Longitude of ascending node | 0.017298° |
| 336.486° | |
| Physical characteristics | |
| Rotation period | 5.49 h[2] 5.487 h (0.2286 d)[1] |
| 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.[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
- ↑ 1.0 1.1 "620 Drakonia (1906 WE)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=620;cad=1.
- ↑ 2.0 2.1 Warner, Brian D. (January 2011), "Upon Further Review: IV. An Examination of Previous Lightcurve Analysis from the Palmer Divide Observatory", The Minor Planet Bulletin 38 (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 )
- 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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