9936 Al-Biruni

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9936 Al-Biruni
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Orbit of 9936 Al-Biruni (blue) compared to the inner planets and Jupiter (red)
Discovery [1]
Discovered by E. W. Elst
V. Ivanova
Discovery site Rozhen Obs.
Discovery date 8 August 1986
Designations
MPC designation 9936 Al-Biruni
Named after
 Al-Biruni (astronomer)[2]
1986 PN4 · 1981 UV12
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 34.4 yr (12,564 days)
Aphelion 3.657 AU
Perihelion 2.5066 AU
3.0818 AU
Eccentricity 0.1866
5.41 yr (1,976 days)
207.0775°
Inclination 15.4374°
310.6235°
13.3869°
Earth MOID 1.48847 AU (222.672 Gm)
Jupiter MOID 1.66791 AU (249.516 Gm)
Physical characteristics
Dimensions 27.81±1.61 km[4]
24.187±0.314 km[5]
22.16 km (calculated)[3]
10.704±0.010 h[6]
0.048±0.006[4]
0.0632±0.0151[5]
0.057 (assumed)[3]
C [3]
12.1[1]
11.7[4][5]
12.0[3]

9936 Al-Biruni, provisional designation 1986 PN4, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 8 August 1986, by Belgian and Bulgarian astronomers Eric Elst and Violeta Ivanova at the Rozhen Observatory, located in Bulgaria's Smolyan province near the border to Greece.[7]

The C-type asteroid orbits the Sun at a distance of 2.5–3.7 AU once every 5 years and 5 months (1,976 days). Its orbit is tilted by 15° to the plane of the ecliptic and shows an eccentricity of 0.19.[1] The first precovery was taken at Crimea-Nauchnij in 1981, extending the asteroid's observation arc by 5 years prior to its discovery.[7]

A rotational light-curve was obtained for this asteroid from photometric observations made at the U.S. Goodsell Observatory (741), Minnesota, in August 2002. The light-curve gave a rotation period of 10.704±0.010 hours with a brightness amplitude of 0.14 in magnitude (U=2)[6]

According to the space-based surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 27.8 and 24.2 kilometers in diameter, respectively, and its surface has a corresponding albedo of 0.05 and 0.06.[4][5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 22.2 kilometers, based on an absolute magnitude of 12.0.[3]

The minor planet was named after the Persian scholar and polymath Al-Biruni (973–1048). Regarded as the founder of Indology and the father of geodesy, he made important contributions to anthropology, mathematics and astronomy. In particular, he is known for developing a method for the summation of series, for solving algebraic equations, and for the triangulation of distances on Earth's surface.[2] Naming citation was published on 26 September 2007 (M.P.C. 60728).[8] The lunar crater Al-Biruni is also named in his honour.

References

  1. ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ 4.0 4.1 4.2 4.3 Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ 5.0 5.1 5.2 5.3 Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ 6.0 6.1 Lua error in package.lua at line 80: module 'strict' not found.
  7. ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
  8. ↑ Lua error in package.lua at line 80: module 'strict' not found.

External links


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