51826 Kalpanachawla

51826 Kalpanachawla, provisional designation 2001 OB34, is an Eoan asteroid in the outer region of the asteroid belt, approximately 7 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 Indo-American astronaut and mission specialist Kalpana Chawla, who died in the Space Shuttle Columbia disaster.

51826 Kalpanachawla
Discovery [1]
Discovered byNEAT
Discovery sitePalomar Obs.
Discovery date19 July 2001
Designations
(51826) Kalpanachawla
Named after
Kalpana Chawla [2]
(Indo-American astronaut)
2001 OB34 · 1999 FB57
main-belt · (outer)
Eos [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc22.15 yr (8,090 days)
Aphelion3.3368 AU
Perihelion2.8107 AU
3.0737 AU
Eccentricity0.0856
5.39 yr (1,968 days)
249.53°
0° 10m 58.44s / day
Inclination9.5889°
14.167°
50.931°
Physical characteristics
Dimensions6.947±0.799 km[4]
0.160±0.057[4]
14.1[1]

    Orbit and classification

    Kalpanachawla is a member the Eos family (606),[3] the largest family in the outer asteroid belt consisting of nearly 10,000 asteroids.[5]: 23  It orbits the Sun in the outer asteroid belt at a distance of 2.8–3.3 AU once every 5 years and 5 months (1,968 days; semi-major axis of 3.07 AU). Its orbit has an eccentricity of 0.09 and an inclination of 10° with respect to the ecliptic.[1]

    The body's observation arc begins with a precovery taken by Spacewatch at Kitt Peak Observatory in April 1994, more than 7 years prior to its official discovery observation at Palomar.[6]

    Physical characteristics

    The asteroid's spectral type is unknown.[1] Members of the Eos family are typically K-type asteroids.[5]: 23 

    Diameter and albedo

    According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Kalpanachawla measures 6.947 kilometers in diameter and its surface has an albedo of 0.160.[4]

    Rotation period

    As of 2017, no rotational lightcurve of Kalpanachawla 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 Indo-American astronaut and mission specialist Kalpana Chawla, who was killed in the Space Shuttle Columbia 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, 51825 Davidbrown, 51827 Laurelclark, 51828 Ilanramon and 51829 Williemccool.[2][9]

    References
    1. "JPL Small-Body Database Browser: 51826 Kalpanachawla (2001 OB34)" (2016-06-08 last obs.). Jet Propulsion Laboratory. Retrieved 28 December 2017.
    2. Schmadel, Lutz D. (2006). "(51826) Kalpanachawla [3.08, 0.08, 9.6]". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 216. doi:10.1007/978-3-540-34361-5_2555. ISBN 978-3-540-34361-5.
    3. "Asteroid 51826 Kalpanachawla – 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. S2CID 118745497. Retrieved 28 December 2017.{{cite journal}}: CS1 maint: multiple names: authors list (link)
    5. 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. S2CID 119280014.
    6. "51826 Kalpanachawla (2001 OB34)". Minor Planet Center. Retrieved 28 December 2017.
    7. "LCDB Data for (51826) Kalpanachawla". Asteroid Lightcurve Database (LCDB). Retrieved 28 December 2017.
    8. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 28 December 2017.
    9. "Kalpana chawla Asteroid 51826". World News IN. 6 December 2010. Archived from the original on 16 March 2012.

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