51825 Davidbrown

51825 Davidbrown, provisional designation 2001 OQ33, is an Eoan asteroid in the outer region of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 19 July 2001, by astronomers of the Near-Earth Asteroid Tracking program at Palomar Observatory in California, United States. The asteroid was named for American astronaut David Brown, who died in the Space Shuttle Columbia disaster.[5]

51825 Davidbrown
Discovery [1]
Discovered byNEAT
Discovery sitePalomar Obs.
Discovery date19 July 2001
Designations
(51825) Davidbrown
Named after
David McDowell Brown [2]
(American astronaut)
2001 OQ33 · 1994 CZ14
1999 CO55
main-belt · (outer)
Eos [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc23.79 yr (8,691 days)
Aphelion3.1755 AU
Perihelion2.7587 AU
2.9671 AU
Eccentricity0.0702
5.11 yr (1,867 days)
316.75°
0° 11m 34.08s / day
Inclination9.6190°
23.457°
33.210°
Physical characteristics
Dimensions4.913±0.760 km[4]
0.184±0.032[4]
14.2[1]

    Orbit and classification

    Davidbrown is a member the Eos family (606),[3] the largest family in the outer asteroid belt consisting of nearly 10,000 K-type asteroids.[6]:23 It orbits the Sun in the outer main-belt at a distance of 2.8–3.2 AU once every 5 years and 1 month (1,867 days; semi-major axis of 2.97 AU). Its orbit has an eccentricity of 0.07 and an inclination of 10° with respect to the ecliptic.[1]

    The body's observation arc begins with its first observation as 1994 CZ14 at ESO's La Silla Observatory in February 1994, more than 7 years prior to its official discovery observation at Palomar.[5]

    Physical characteristics

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Davidbrown measures 4.913 kilometers in diameter and its surface has an albedo of 0.184.[4]

    Rotation period

    As of 2017, no rotational lightcurve of Davidbrown has been obtained from photometric observations. The asteroid's rotation period, poles and shape remain unknown.[1][7]

    Naming

    This minor planet was named after American astronaut and mission specialist David McDowell Brown, who was killed in the Columbia space shuttle reentry disaster on 1 February 2003.[2] The approved naming citation was published by the Minor Planet Center on 6 August 2003 (M.P.C. 49283).[8] The following asteroids were also named in memory of the other six members of STS-107: 51823 Rickhusband, 51824 Mikeanderson, 51826 Kalpanachawla, 51827 Laurelclark, 51828 Ilanramon and 51829 Williemccool.

    References
    1. "JPL Small-Body Database Browser: 51825 Davidbrown (2001 OQ33)" (2017-11-25 last obs.). Jet Propulsion Laboratory. Retrieved 28 December 2017.
    2. Schmadel, Lutz D. (2006). "(51825) Davidbrown [2.97, 0.07, 9.6]". Dictionary of Minor Planet Names – (51825) Davidbrown, Addendum to Fifth Edition: 2003–2005. Springer Berlin Heidelberg. p. 216. doi:10.1007/978-3-540-34361-5_2554. ISBN 978-3-540-34361-5.
    3. "Asteroid 51825 Davidbrown – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 27 October 2019.
    4. Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 28 December 2017.
    5. "51825 Davidbrown (2001 OQ33)". Minor Planet Center. Retrieved 28 December 2017.
    6. 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.
    7. "LCDB Data for (51825) Davidbrown". Asteroid Lightcurve Database (LCDB). Retrieved 28 December 2017.
    8. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 28 December 2017.

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