9963 Sandage

From Infogalactic: the planetary knowledge core
Jump to: navigation, search
9963 Sandage
160px
Orbits of 9963 Sandage (blue), inner planets (red) and Jupiter (outermost)
Discovery [1]
Discovered by E. F. Helin
Discovery site Palomar Obs.
Discovery date 9 January 1992
Designations
MPC designation 9963 Sandage
Named after
Allan Sandage
(astronomer)[2]
1992 AN · 1976 NH
1989 CK6
main-belt · Phocaea[3]
Orbital characteristics[1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc 26.54 yr (9,692 days)    
Aphelion 2.9985 AU
Perihelion 1.6831 AU
2.3408 AU
Eccentricity 0.2809
3.58 yr (1,308 days)
272.37°
Inclination 23.462°
116.97°
241.19°
Earth MOID 0.7726 AU
Physical characteristics
Dimensions 5.45 km (calculated)[3]
4.65053±0.00013 h[4]
4.6502±0.0008 h[5]
0.23 (assumed)[3]
S[3]
12.9[1]
13.53[3]

9963 Sandage, provisional designation 1992 AN, is a stony asteroid from the inner regions of the asteroid belt, about 5.5 kilometers in diameter. It was discovered by American female astronomer Eleanor Helin at the U.S. Palomar Observatory in California on 9 January 1992.[6]

The stony S-type asteroid is a member of the Phocaea family, a group of asteroids with similar orbital characteristics. It orbits the Sun at a distance of 1.7–3.0 AU once every 3 years and 7 months (1,308 days). Its orbit shows an eccentricity of 0.28 and an inclination of 23 degrees from the plane of the ecliptic.[1]

In 2012 and 2015, two photometric light-curve analysis at the Palomar Transient Factory and at Texas Tech's Preston Gott Observatory rendered a well-defined rotation period of 4.65 hours with a high brightness amplitude of 0.56 and 0.43 in magnitude, respectively.[4][5] The Collaborative Asteroid Lightcurve Link assumes an albedo 0.23, which is a typical value for the surface of stony asteroids, and calculates a diameter of 5.45 kilometers based on an absolute magnitude of 13.53.[3]

The minor planet was named after American astronomer Allan Sandage (1926–2010), who worked at Palomar and Mount Wilson Observatory. He was an international authority in stellar astronomy and observational cosmology.[2] Sandage determined the first reasonably accurate values for the Hubble constant and also discovered the first quasar.

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 Lua error in package.lua at line 80: module 'strict' not found.
  5. 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
  6. Lua error in package.lua at line 80: module 'strict' not found.

External links


<templatestyles src="Asbox/styles.css"></templatestyles>