74 Galatea

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74 Galatea
Discovery
Discovered by Ernst Wilhelm Tempel
Discovery date August 29, 1862
Designations
MPC designation (74) Galatea
Pronunciation /ˈɡæləˈtə/ GAL-ə-TEE
Main belt
Orbital characteristics[1]
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 515.376 Gm (3.445 AU)
Perihelion 315.937 Gm (2.112 AU)
415.657 Gm (2.778 AU)
Eccentricity 0.240
1691.658 d (4.63 a)
36.838°
Inclination 4.075°
197.313°
174.519°
Physical characteristics
Dimensions 120.67 ± 7.15 km[2]
Mass (6.13 ± 5.36) × 1018 kg[2]
Mean density
6.66 ± 5.94[2] g/cm3
17.270[3] h
0.043 [4]
C[5]
8.66

74 Galatea (/ˈɡæləˈtə/ GAL-ə-TEE) is a large main-belt asteroid. Its surface is very dark in color.[citation needed] Galatea was found by the prolific comet discoverer Ernst Tempel on August 29, 1862, in Marseilles, France. It was his third asteroid discovery, it is named after one of the two Galateas in Greek mythology. A stellar occultation by Galatea was observed on September 8, 1987, the name Galatea has also been given to one of Neptune's satellites.

Photometric observations of this asteroid made during 2008 at the Organ Mesa Observatory in Las Cruces, New Mexico gave a light curve with a period of 17.270 ± 0.002 hours and a brightness variation of 0.08 ± 0.01 in magnitude. The curve displays four minima and four maxima.[3]

References[edit]

  1. ^ Yeomans, Donald K., "74 Galatea", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 2013-03-30. 
  2. ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, Bibcode:2012P&SS...73...98C, arXiv:1203.4336Freely accessible, doi:10.1016/j.pss.2012.03.009.  See Table 1.
  3. ^ a b Pilcher, Frederick (September 2008), "Period Determinations for 26 Proserpina, 34 Circe 74 Galatea, 143 Adria, 272 Antonia, 419 Aurelia, and 557 Violetta", The Minor Planet Bulletin, 35 (3), pp. 135–138, Bibcode:2008MPBu...35..135P. 
  4. ^ Asteroid Data Sets Archived 2010-01-17 at WebCite
  5. ^ *JPL Small-Body Database Browser

External links[edit]