15262 Abderhalden

15262 Abderhalden
Discovery [1]
Discovered by F. Börngen
L. D. Schmadel
Discovery site Tautenburg Obs.
Discovery date 12 October 1990
Designations
MPC designation 15262 Abderhalden
Named after
 Emil Abderhalden
(physiologist)[2]
1990 TG4 · 1978 PJ3
1978 RM3 · 1999 FO42
main-belt (outer) · Themis [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 37.66 yr (13,754 days) 
Aphelion 3.6794 AU
Perihelion 2.7532 AU
3.2163 AU
Eccentricity 0.1439
5.77 yr (2,107 days)
258.90°
0° 10m 14.88s / day
Inclination 0.6328°
5.8780°
286.94°
Physical characteristics
Dimensions 12.201±0.545 km[4]
8.43 km (calculated)[3]
3.5327±0.0012 h[5]
0.0623±0.0293[4]
0.08 (assumed)[3]
C [3]
13.3[1]
13.73[3]
13.2[4]
13.282±0.004 (R)[5]
13.43±0.23[6]

    15262 Abderhalden, provisional designation 1990 TG4, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 10 kilometers in diameter. It was discovered by German astronomers Freimut Börngen and Lutz Schmadel at the Karl Schwarzschild Observatory in Tautenburg, eastern Germany, on 12 October 1990.[7]

    The dark C-type asteroid is a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun at a distance of 2.7–3.7 AU once every 5 years and 9 months (2,101 days). Its orbit is tilted to the plane of the ecliptic by 1° and shows an eccentricity of 0.15.[1] The first precovery was obtained at Crimea-Nauchnij in 1978, extending the asteroid's observation arc by 12 years prior to its discovery.[7]

    In 2013, a rotational light-curve was obtained from photometric observation at the U.S. Palomar Transient Factory, California. The light-curve showed a rotation period of 3.5327±0.0012 hours with a brightness variation of 0.21 in magnitude (U=2).[5] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08, a standard albedo for carbonaceous asteroids of this family, and calculates a diameter of 8.4 kilometers,[3] while the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer finds an albedo of 0.062 with a corresponding diameter of 12.2 kilometers.[4]

    The minor planet was named in memory of Swiss biochemist and physiologist Emil Abderhalden (1877–1950). He was a researcher in the field of physiological chemistry, founder of modern dietetics, and promoter of public welfare. He taught physiology at the Martin Luther University of Halle-Wittenberg from 1911 until the end of World War II.[2] Naming citation was published on 13 October 2000 (M.P.C. 41387).[8]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 15262 Abderhalden (1990 TG4)" (2016-03-16 last obs.). Jet Propulsion Laboratory. Retrieved 9 April 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (15262) Abderhalden. Springer Berlin Heidelberg. p. 822. ISBN 978-3-540-00238-3. Retrieved April 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (15262) Abderhalden". Asteroid Lightcurve Database (LCDB). Retrieved April 2016.
    4. 1 2 3 4 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:1109.6407. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved April 2016.
    5. 1 2 3 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:1504.04041. Bibcode:2015AJ....150...75W. doi:10.1088/0004-6256/150/3/75. Retrieved April 2016.
    6. ↑ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved April 2016.
    7. 1 2 "15262 Abderhalden (1990 TG4)". Minor Planet Center. Retrieved April 2016.
    8. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved April 2016.

    External links


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