Discovery [1] | |
---|---|
Discovered by | E. Bowell |
Discovery site | Anderson Mesa Stn. |
Discovery date | 4 June 1981 |
Designations | |
(3169) Ostro | |
Named after |
Steven J. Ostro (planetary scientist) [2] |
1981 LA | |
main-belt · ( inner) [1] · Hungaria [3] [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 63.43 yr (23,166 days) |
Aphelion | 2.0184 AU |
Perihelion | 1.7652 AU |
1.8918 AU | |
Eccentricity | 0.0669 |
2.60 yr (950 days) | |
120.41 ° | |
0° 22m 43.68s / day | |
Inclination | 24.906° |
96.376° | |
32.622° | |
Physical characteristics | |
Dimensions | 4.662±0.118
[5] 5.27 km (derived) [4] |
6.503±0.003 [6] | |
0.5152 (derived)
[4] 0.960±0.023 [5] | |
TS (
Tholen)
[1] Xe ( SMASS) [1] B–V = 0.771 [1] U–B = 0.306 [1] | |
12.73 [1] [4] | |
3169 Ostro, provisional designation 1981 LA, is a Hungaria family asteroid from the innermost regions of the asteroid belt, approximately 5 kilometers in diameter.
The asteroid was discovered on 4 June 1981, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, Arizona, [3] and named after planetary scientist Steven J. Ostro at JPL. [2]
Ostro is a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System. It orbits the Sun at a distance of 1.8–2.0 AU once every 2 years and 7 months (950 days). Its orbit has an eccentricity of 0.07 and an inclination of 25 ° with respect to the ecliptic. [1]
In the Tholen and SMASS taxonomy, Ostro is classified as a TS-type and Xe-type asteroid, respectively. [1] It has also been characterized as an E-type asteroid. [4]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Ostro measures 4.662 kilometers in diameter and its surface has an outstandingly high albedo of 0.960. [5] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.5152 and a diameter of 5.27 kilometers with an absolute magnitude of 12.73. [4]
In May 2012, a rotational lightcurve of Ostro was obtained from photometric observations by American astronomer Brian Warner. Lightcurve analysis gave a well-defined rotation period of 6.503 hours with a brightness amplitude of 0.79 magnitude ( U=3). [6]
This minor planet was named after American planetary scientist Steven J. Ostro at the Jet Propulsion Laboratory of the California Institute of Technology. [2] The approved naming citation was published by the Minor Planet Center on 14 April 1987 ( M.P.C. 11749). [7]
Discovery [1] | |
---|---|
Discovered by | E. Bowell |
Discovery site | Anderson Mesa Stn. |
Discovery date | 4 June 1981 |
Designations | |
(3169) Ostro | |
Named after |
Steven J. Ostro (planetary scientist) [2] |
1981 LA | |
main-belt · ( inner) [1] · Hungaria [3] [4] | |
Orbital characteristics [1] | |
Epoch 4 September 2017 ( JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 63.43 yr (23,166 days) |
Aphelion | 2.0184 AU |
Perihelion | 1.7652 AU |
1.8918 AU | |
Eccentricity | 0.0669 |
2.60 yr (950 days) | |
120.41 ° | |
0° 22m 43.68s / day | |
Inclination | 24.906° |
96.376° | |
32.622° | |
Physical characteristics | |
Dimensions | 4.662±0.118
[5] 5.27 km (derived) [4] |
6.503±0.003 [6] | |
0.5152 (derived)
[4] 0.960±0.023 [5] | |
TS (
Tholen)
[1] Xe ( SMASS) [1] B–V = 0.771 [1] U–B = 0.306 [1] | |
12.73 [1] [4] | |
3169 Ostro, provisional designation 1981 LA, is a Hungaria family asteroid from the innermost regions of the asteroid belt, approximately 5 kilometers in diameter.
The asteroid was discovered on 4 June 1981, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, Arizona, [3] and named after planetary scientist Steven J. Ostro at JPL. [2]
Ostro is a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System. It orbits the Sun at a distance of 1.8–2.0 AU once every 2 years and 7 months (950 days). Its orbit has an eccentricity of 0.07 and an inclination of 25 ° with respect to the ecliptic. [1]
In the Tholen and SMASS taxonomy, Ostro is classified as a TS-type and Xe-type asteroid, respectively. [1] It has also been characterized as an E-type asteroid. [4]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Ostro measures 4.662 kilometers in diameter and its surface has an outstandingly high albedo of 0.960. [5] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.5152 and a diameter of 5.27 kilometers with an absolute magnitude of 12.73. [4]
In May 2012, a rotational lightcurve of Ostro was obtained from photometric observations by American astronomer Brian Warner. Lightcurve analysis gave a well-defined rotation period of 6.503 hours with a brightness amplitude of 0.79 magnitude ( U=3). [6]
This minor planet was named after American planetary scientist Steven J. Ostro at the Jet Propulsion Laboratory of the California Institute of Technology. [2] The approved naming citation was published by the Minor Planet Center on 14 April 1987 ( M.P.C. 11749). [7]