427 Galene

427 Galene
	Modelled shape of Galene from its lightcurve
Discovery
Discovered by	Auguste Charlois
Discovery date	27 August 1897
Designations
MPC designation	(427) Galene
Pronunciation	/ɡəˈliːniː/
Alternative designations	1897 DJ
Minor planet category	Main belt
Adjectives	Galenean /ɡælɪˈniːən/
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	110.93 yr (40,519 d) 110.93 yr (40519 d)
Aphelion	3.32976 AU (498.125 Gm)
Perihelion	2.61263 AU (390.844 Gm)
Semi-major axis	2.97119 AU (444.484 Gm)
Eccentricity	0.12068
Orbital period (sidereal)	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°
Argument of perihelion	12.2909°
Physical characteristics
Dimensions	29.98±1.2 km
Synodic rotation period	3.705 h (0.1544 d)
Geometric albedo	0.2364±0.020
Absolute magnitude (H)	10.2

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

^ Noah Webster (1884) A Practical Dictionary of the English Language
^ ^a ^b "427 Galene (1897 DJ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.
^ 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
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
427 Galene at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

This article about an asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it.

[1] Noah Webster (1884) A Practical Dictionary of the English Language

[jpldata-2] "427 Galene (1897 DJ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016.

[Toth2000-3] 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.

[Caspari2009-4] 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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427 Galene

References

External links

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