2537 Gilmore

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2537 Gilmore
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg Obs.
Discovery date 4 September 1951
MPC designation 2537 Gilmore
Named after
Alan C. Gilmore
1951 RL · 1977 QP2
main-belt · Eunomia[3]
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 64.77 yr (23,658 days)
Aphelion 3.1135 AU
Perihelion 2.1991 AU
2.6563 AU
Eccentricity 0.1721
4.33 yr (1,581 days)
0° 13m 39.72s / day
Inclination 12.937°
Physical characteristics
Dimensions 6.68 km (calculated)[3]
7.221±0.118 km[4]
4.230±0.020 h[5]
4.2302±0.0399 h[6]
0.21 (assumed)[3]
12.650±0.120 (R)[5]
12.737±0.002 (R)[6]

2537 Gilmore, provisional designation 1951 RL, is an Eunomia asteroid from the middle region of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 4 September 1951, by German astronomer Karl Reinmuth at Heidelberg-Königstuhl State Observatory in southern Germany.[7]

The asteroid is a member of the Eunomia family, a large group of S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun at a distance of 2.2–3.1 AU once every 4 years and 4 months (1,581 days). Its orbit has an eccentricity of 0.17 and an inclination of 13° with respect to the ecliptic.[1] As no precoveries were taken, the asteroid's observation arc begins with its discovery in 1951.[7]

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 7.2 kilometers in diameter and its surface has an albedo of 0.309,[4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21 and calculates a diameter of 6.7 kilometers, based on an absolute magnitude of 13.19.[3]

Two rotational light-curves for this asteroid were obtained from photometric observations at the U.S. Palomar Transient Factory, California, from January to February 2014. The light-curves gave a rotation period of 4.230±0.020 and 4.2302±0.0399 hours with a brightness variation of 0.34 and 0.35 in magnitude, respectively (U=2/2).[5][6]

The minor planet was named in honor of New Zealand astronomer couple Alan C. Gilmore and his wife , Pamela (née Kilmartin), two very productive observers of comets and minor planet in the Southern Hemisphere. They research at the Mount John University Observatory since 1980, and are members of the Royal Astronomical Society of New Zealand.[2] Naming citation was published on 24 July 1983 (M.P.C. 8064),[8] based on a proposal by Conrad Bardwell (see 1615 Bardwell) and Brian G. Marsden. Pamela Gilmore is also honored by the minor planet 3907 Kilmartin.[2]


  1. ^ a b c d "JPL Small-Body Database Browser: 2537 Gilmore (1951 RL)" (2016-06-12 last obs.). Jet Propulsion Laboratory. Retrieved 12 August 2016. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2537) Gilmore. Springer Berlin Heidelberg. p. 207. ISBN 978-3-540-00238-3. Retrieved 12 August 2016. 
  3. ^ a b c d e f "LCDB Data for (2537) Gilmore". Asteroid Lightcurve Database (LCDB). Retrieved 12 August 2016. 
  4. ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407free to read. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 12 August 2016. 
  5. ^ a b c Chang, Chan-Kao; Ip, Wing-Huen; Lin, Hsing-Wen; Cheng, Yu-Chi; Ngeow, Chow-Choong; Yang, Ting-Chang; et al. (August 2015). "Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory". The Astrophysical Journal Supplement Series. 219 (2): 19. arXiv:1506.08493free to read. Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. Retrieved 12 August 2016. 
  6. ^ a b c 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. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved 12 August 2016. 
  7. ^ a b "2537 Gilmore (1951 RL)". Minor Planet Center. Retrieved 12 August 2016. 
  8. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 12 August 2016. 

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