405 Thia

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Not to be confused with 453 Tea or Theia (planet).
405 Thia
Discovery
Discovered by Auguste Charlois
Discovery date 23 July 1895
Designations
Named after
Theia
1895 BZ
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 116.83 yr (42671 d)
Aphelion 3.2130 AU (480.66 Gm)
Perihelion 1.9592 AU (293.09 Gm)
2.5861 AU (386.88 Gm)
Eccentricity 0.24241
4.16 yr (1519.0 d)
18.53 km/s
127.540°
0° 14m 13.164s / day
Inclination 11.938°
255.245°
308.83°
Earth MOID 0.977436 AU (146.2223 Gm)
Jupiter MOID 1.88018 AU (281.271 Gm)
Jupiter Tisserand parameter 3.350
Physical characteristics
Dimensions 124.90±2.3 km[1]
122.14 ± 7.69 km[2]
Mass (1.38 ± 0.14) × 1018 kg[2]
Mean density
1.44 ± 0.30 g/cm3[2]
10.08 h (0.420 d)
0.0468±0.002
C
8.46

405 Thia is a very large main-belt asteroid. It is classified as a C-type asteroid and is probably composed of carbonaceous material. This object was discovered by Auguste Charlois on July 23, 1895, in Nice, and was named after Theia (sometimes written Thea or Thia), a Titaness in Greek mythology.[3]

In 2002, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.31 AU. The resulting data yielded an effective diameter of 125 ± 16 km.[4]

References[edit]

  1. ^ a b "405 Thia (1895 BZ)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 10 May 2016. 
  2. ^ a b c Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336free to read, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009.  See Table 1.
  3. ^ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names. Berlin, Heidelberg, New York: Springer. p. 48. ISBN 3-540-00238-3. 
  4. ^ Magri, Christopher; et al. (January 2007), "A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003" (PDF), Icarus, 186 (1): 126–151, Bibcode:2007Icar..186..126M, doi:10.1016/j.icarus.2006.08.018, retrieved 2015-04-14. 

External links[edit]