Astronomy:427 Galene
_Galene.png) Modelled shape of Galene from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 27 August 1897 |
| Designations | |
| (427) Galene | |
| Pronunciation | /ɡəˈliːniː/[1] |
| 1897 DJ | |
| Minor planet category | Main belt |
| Adjectives | Galenean /ɡælɪˈniːən/ |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.93 yr (40,519 d) 110.93 yr (40519 d) |
| |{{{apsis}}}|helion}} | 3.32976 astronomical unit|AU (498.125 Gm) |
| |{{{apsis}}}|helion}} | 2.61263 AU (390.844 Gm) |
| 2.97119 AU (444.484 Gm) | |
| Eccentricity | 0.12068 |
| Orbital period | 5.12 yr (1,870.7 d) 5.12 yr (1870.7 d) |
| Mean anomaly | 90.0900° |
| Mean motion | 0° 11m 32.806s / day |
| Inclination | 5.12388° |
| Longitude of ascending node | 297.424° |
| 12.2909° | |
| Physical characteristics | |
| Dimensions | 29.98±1.2 km |
| Rotation period | 3.705 h (0.1544 d) |
| Geometric albedo | 0.2364±0.020 |
| Absolute magnitude (H) | 10.2 |
Galene (minor planet designation: 427 Galene) is a typical main belt asteroid. It was discovered by the French astronomer Auguste Charlois on 27 August 1897 from Nice, and was named after Galene, one of the Nereids of Greek Mythology (Hesiod, Theogony, 240). This asteroid is orbiting the Sun at a distance of 2.97 astronomical unit|AU with a period of 5.12 yr and an eccentricity of 0.12.[2] A computer search suggests it is the most likely parent body of the impactor that generated the temporary cometary activity of 7968 Elst–Pizarro in 1996.[3]
Analysis of the light curve generated from photometry data collected during 2009 show a rotation period of 3.705±0.005 h with a brightness variation of 0.6 in magnitude. Based upon an albedo of 0.26±0.03, this asteroid spans a diameter of 33.8±2.0 km.[4]
References
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 2.0 2.1 "427 Galene (1897 DJ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=427.
- ↑ Toth, I. (August 2000), "Impact-generated activity period of the asteroid 7968 Elst-Pizarro in 1996: Identification of the asteroid 427 Galene as the most probable parent body of the impactors", Astronomy and Astrophysics 360: 375–380, Bibcode: 2000A&A...360..375T.
- ↑ Caspari, Petr (October 2009), "Lightcurve Analysis of Minor Planets 427 Galene and 5489 Oberkochen", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 36 (4): 168, Bibcode: 2009MPBu...36..168C.
External links
- 427 Galene at AstDyS-2, Asteroids—Dynamic Site
- 427 Galene at the JPL Small-Body Database
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