1852 Carpenter

1852 Carpenter, provisional designation 1955 GA, is an Eoan asteroid from the outer regions of the asteroid belt, approximately 20 kilometers in diameter. The asteroid was discovered on 1 April 1955, by the Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States.

1852 Carpenter
Discovery [1]
Discovered byIndiana University
(Indiana Asteroid Program)
Discovery siteGoethe Link Obs.
Discovery date1 April 1955
Designations
(1852) Carpenter
Named after
Edwin Carpenter
(American astronomer)[2]
1955 GA · 1931 TT2
1937 WH · 1939 FK
main-belt · Eos [3][4]
Orbital characteristics [5]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 0
Observation arc87.87 yr (32,094 d)
Aphelion3.2004 AU
Perihelion2.8329 AU
3.0167 AU
Eccentricity0.0609
5.24 yr (1,914 d)
194.18°
0° 11m 17.16s / day
Inclination11.197°
95.338°
353.15°
Physical characteristics
Mean diameter
21.378±0.208[6]
22.9 km
0.1224±0.024
0.128±0.025[6]
11.3[1][5]

    Description

    Carpenter is a core member of the Eos family (606), the largest asteroid family in the outer main belt consisting of nearly 10,000 asteroids.[3][4][7]:23 It orbits the Sun in the outer main-belt at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,913 days). Its orbit has an eccentricity of 0.06 and an inclination of 11° with respect to the ecliptic.[5]

    This minor planet was named after American astronomer Edwin Francis Carpenter (1898–1963), second director of the Steward Observatory who researched spectroscopic binaries and interacting galaxies. He played a major role in enabling the construction of the Kitt Peak National Observatory.[2] The official naming citation was published by the Minor Planet Center on 1 April 1980 (M.P.C. 5282).[8]

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    References
    1. "1852 Carpenter (1955 GA)". Minor Planet Center. Retrieved 20 October 2019.
    2. Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (1852) Carpenter. Springer Berlin Heidelberg. doi:10.1007/978-3-540-29925-7_1853. ISBN 978-3-540-00238-3.
    3. "Asteroid 1852 Carpenter". Small Bodies Data Ferret. Retrieved 20 October 2019.
    4. "Asteroid (1852) Carpenter". AstDyS-2, Asteroids – Dynamic Site. Retrieved 20 October 2019.
    5. "JPL Small-Body Database Browser: 1852 Carpenter (1955 GA)" (2019-08-20 last obs.). Jet Propulsion Laboratory. Retrieved 20 October 2019.
    6. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8.
    7. Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). Identification and Dynamical Properties of Asteroid Families. Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 9780816532131.
    8. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 20 October 2019.

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