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]

    References
    1. "1852 Carpenter (1955 GA)". Minor Planet Center. Retrieved 20 October 2019.
    2. Schmadel, Lutz D. (2007). "(1852) Carpenter". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. pp. 148–149. 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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