2153 Akiyama

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2153 Akiyama
Discovery 
Synodic rotation period
12.5132±0.0053 h[5]
12.5325±0.0053 h[5]
0.069±0.017[4]
0.08 (assumed)[3]
0.1089±0.020 (IRAS:2)[1]
C [3]
12.0[1] · 12.02±0.28[6] · 11.90[4] · 11.970±0.002 (R)[5] · 11.920±0.003 (R)[5] · 12.42[3]

2153 Akiyama, provisional designation 1978 XD, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 17 kilometers in diameter.

The asteroid was discovered by staff members at the

George R. Agassiz Station of the Harvard College Observatory on 1 December 1978, and named Japanese astronomer Kaoru Akiyama.[7]

Orbit and classification

Akiyama is a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun at a distance of 2.6–3.6 AU once every 5 years and 6 months (2,017 days). Its orbit has an eccentricity of 0.15 and an inclination of 1° with respect to the ecliptic.[1] A first precovery was taken at Palomar Observatory in 1954, extending the asteroid's observation arc by 24 years prior to its discovery.[7]

Physical characteristics

Akiyama has been characterized as a dark C-type asteroid.[3]

Diameter and albedo

According to the space-based surveys carried out by the Infrared Astronomical Satellite

albedo of 0.11 and 0.07.[1][4] The Collaborative Asteroid Lightcurve Link assumes an intermediary albedo of 0.08 and calculates a diameter of 15.4 kilometers with an absolute magnitude of 12.42.[3]

Rotation period

Two rotational

U=2/2).[5]

Naming

This

M.P.C. 5014).[8]

References

  1. ^ a b c d e f g "JPL Small-Body Database Browser: 2153 Akiyama (1978 XD)" (2017-03-29 last obs.). Jet Propulsion Laboratory. Retrieved 11 June 2017.
  2. ^
    ISBN 978-3-540-00238-3
    .
  3. ^ a b c d e f g "LCDB Data for (2153) Akiyama". Asteroid Lightcurve Database (LCDB). Retrieved 4 May 2016.
  4. ^
    doi:10.1088/2041-8205/759/1/L8
    . Retrieved 4 May 2016.
  5. ^
    doi:10.1088/0004-6256/150/3/75
    . Retrieved 4 May 2016.
  6. doi:10.1016/j.icarus.2015.08.007
    . Retrieved 4 May 2016.
  7. ^ a b "2153 Akiyama (1978 XD)". Minor Planet Center. Retrieved 4 May 2016.
  8. ISSN 0736-6884
    . Retrieved 4 May 2016.

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=2153_Akiyama&oldid=1191634091"