Astronomy:55 Pandora
.png) Lightcurve-based 3D-model of Pandora | |
| Discovery | |
|---|---|
| Discovered by | George Mary Searle |
| Discovery site | Albany, New York |
| Discovery date | September 10, 1858 |
| Designations | |
| (55) Pandora | |
| Pronunciation | /pænˈdɔːrə/[1] |
| Named after | Pandora |
| Minor planet category | Main belt |
| Adjectives | Pandorian /pænˈdɔːriən/[2] |
| Orbital characteristics[3] | |
| Epoch June 27, 2015 | |
| |{{{apsis}}}|helion}} | 3.152 AU (471.5 Gm) |
| |{{{apsis}}}|helion}} | 2.367 AU (354.1 Gm) |
| 2.760 AU (412.9 Gm) | |
| Eccentricity | 0.142 |
| Orbital period | 4.58 yr (1,674 d) |
| Mean anomaly | 61.834° |
| Inclination | 7.186° |
| Longitude of ascending node | 10.432° |
| 3.944° | |
| Physical characteristics | |
| Dimensions | 66.7 km |
| Mass | 3.1×1017 kg |
| Rotation period | 4.8040 h [3] |
| Geometric albedo | 0.301 [3] |
| M[4] | |
| Absolute magnitude (H) | 7.7 |
Pandora (minor planet designation: 55 Pandora) is a fairly large and very bright asteroid in the asteroid belt. Pandora was discovered by American astronomer and Catholic priest George Mary Searle on September 10, 1858, from the Dudley Observatory near Albany, NY.[5] It was his first and only asteroid discovery.
It is named after Pandora, the first woman in Greek mythology, who unwisely opened a box that released evil into the world. The name was apparently chosen by Blandina Dudley, widow of the founder of the Dudley Observatory, who had been involved in an acrimonious dispute with astronomer B. A. Gould. Gould felt that the name had an "apt significance".[6] The asteroid shares its name with Pandora, a moon of Saturn.
This object is orbiting the Sun with a period of 4.58 years, a semimajor axis of 2.76 astronomical unit|AU, and an eccentricity of 0.14. Its orbital plane lies at an angle of 7.2° to the plane of the ecliptic. Photometric observations of this asteroid at the Rozhen Observatory in Bulgaria during 2010 gave a light curve with a period of 4.7992 hours and a brightness variation of Δm=0.22 mag. This is consistent with a period of 4.804 hours and an amplitude of 0.24 obtained during a 1977 study.[7] It has a cross-sectional size of 66.7 km.
See also
- Aubrite
- 3103 Eger
- 2867 Šteins
References
- ↑ Pandora (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Pandora (Subscription or UK public library membership required.)
- ↑ John Krumpelmann (1959) Bayard Taylor and German Letters, p. 122
- ↑ 3.0 3.1 3.2 "55 Pandora". JPL Small-Body Database Browser. NASA Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=55.
- ↑ Britt, Daniel et al. (November 2014), "Space Weathering in Olivine and the Mineralogy of (Some) M-Class Asteroids", American Astronomical Society, DPS meeting #46 46, 506.01, Bibcode: 2014DPS....4650601B.
- ↑ "Numbered Minor Planets 1–5000", Discovery Circumstances (IAU Minor Planet center), https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html, retrieved 7 April 2013.
- ↑ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names. Springer Science & Business Media. p. 20. ISBN 978-3-540-00238-3. https://books.google.com/books?id=KWrB1jPCa8AC&pg=PA20.
- ↑ Radeva, V. et al. (2011), "Rotation periods of the asteroids 55 Pandora, 78 Diana and 815 Coppelia", Bulgarian Astronomical Journal 17 (2): pp. 133–141, Bibcode: 2012MPBu...39...57P.
External links
- 55 Pandora at AstDyS-2, Asteroids—Dynamic Site
- 55 Pandora at the JPL Small-Body Database
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