427 Galene
Modelled shape of Galene from its lightcurve
Discovery
Discovered byAuguste Charlois
Discovery date27 August 1897
Designations
(427) Galene
Pronunciation/ɡəˈliːniː/[1]
1897 DJ
Main belt
AdjectivesGalenean /ɡælɪˈniːən/
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc110.93 yr (40,519 d) 110.93 yr (40519 d)
Aphelion3.32976 AU (498.125 Gm)
Perihelion2.61263 AU (390.844 Gm)
2.97119 AU (444.484 Gm)
Eccentricity0.12068
5.12 yr (1,870.7 d) 5.12 yr (1870.7 d)
90.0900°
0° 11m 32.806s / day
Inclination5.12388°
297.424°
12.2909°
Physical characteristics
Dimensions29.98±1.2 km
3.705 h (0.1544 d)
0.2364±0.020
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 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

    1. ↑ Noah Webster (1884) A Practical Dictionary of the English Language
    2. 1 2 "427 Galene (1897 DJ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.
    3. ↑ 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.
    4. ↑ 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.


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