1853 McElroy

1853 McElroy
Discovery [1]
Discovered by Indiana University
(Indiana Asteroid Program)
Discovery site Goethe Link Obs.
Discovery date 15 December 1957
Designations
MPC designation 1853 McElroy
Named after
 William D. McElroy
(biochemist)[2]
1957 XE · 1930 YP
1950 NX · 1950 OM
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 65.52 yr (23932 days)
Aphelion 3.2178 AU (481.38 Gm)
Perihelion 2.9115 AU (435.55 Gm)
3.0647 AU (458.47 Gm)
Eccentricity 0.049963
5.37 yr (1959.6 d)
356.34°
0° 11m 1.356s / day
Inclination 15.757°
298.78°
90.222°
Earth MOID 1.96736 AU (294.313 Gm)
Jupiter MOID 2.07208 AU (309.979 Gm)
Jupiter Tisserand parameter 3.173
Physical characteristics
Dimensions 21.14 km[4]
21.09±0.67 km[5]
24.065±0.282 km[6]
17.47±0.64 km[7]
20.89 km (derived)[3]
Mean radius
 10.57 ± 0.5 km
8.016 h (0.3340 d)[1][8]
8.0229±0.0020 h[9]
0.2494[4]
0.261±0.018[5]
0.1986±0.0276[6]
0.304±0.055[7]
0.1937 (derived)[3]
0.2494 ± 0.026[1]
C [3]
10.8

    1853 McElroy, provisional designation 1957 XE, is a carbonaceous asteroid from the outer region of the asteroid belt, about 21 kilometers in diameter. It was discovered on 15 December 1957, by the Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States.[10]

    The asteroid orbits the Sun at a distance of 2.9–3.2 AU once every 5 years and 4 months (1,960 days). It has a rotation period of 8.016 hours.[8][9] Its orbit is tilted by 16 degrees to the ecliptic. The geometric albedo of the C-type asteroid lies in between 0.19 and 0.30, as measured by IRAS, WISE/NEOWISE and AKARI surveys. The Light Curve Database project derived an albedo of 0.1937 lower than any other published figure.[3]

    It was named in honor of American biochemist William David McElroy (1917–1999), chairman of the biology department at Johns Hopkins University during the 1950s and 1960s, later director of the National Science Foundation (NSF) in the early 1970s and chancellor of the University of California at San Diego from until 1980. During his tenure as director of NSF the U.S. government decided to fund the Very Large Array, now officially known as the Karl G. Jansky Very Large Array.[2]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 1853 McElroy (1957 XE)" (2015-10-20 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1853) McElroy. Springer Berlin Heidelberg. p. 149. ISBN 978-3-540-29925-7. Retrieved 5 November 2015.
    3. 1 2 3 4 5 "LCDB Data for (1853) McElroy". Asteroid Lightcurve Database (LCDB). Retrieved 5 November 2015.
    4. 1 2 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved 5 November 2015.
    5. 1 2 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 5 November 2015.
    6. 1 2 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 5 November 2015.
    7. 1 2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; Cabrera, M. S. (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:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 5 November 2015.
    8. 1 2 Warner, Brian D. (March 2005). "Lightcurve analysis for asteroids 242, 893, 921, 1373, 1853, 2120, 2448 3022, 6490, 6517, 7187, 7757, and 18108". The Minor Planet Bulletin. 32 (1): 4–7. Bibcode:2005MPBu...32....4W. ISSN 1052-8091. Retrieved 5 November 2015.
    9. 1 2 Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal. 150 (3): 35. arXiv:1504.04041Freely accessible. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 5 November 2015.
    10. ↑ "1853 McElroy (1957 XE)". Minor Planet Center. Retrieved 5 November 2015.

    External links


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