1789 Dobrovolsky

1789 Dobrovolsky
Discovery [1]
Discovered by L. Chernykh
Discovery site CrAO - Nauchnyj
Discovery date 19 August 1966
Designations
MPC designation 1789 Dobrovolsky
Named after
 Georgy Dobrovolsky
(cosmonaut)[2]
1966 QC · 1936 KK
1939 GR · 1943 SG
1946 NA · 1953 TC2
1953 VX3 · 1955 EJ
1956 PD · 1956 RT
1969 OF
main-belt · Flora [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 71.94 yr (26277 days)
Aphelion 2.6313 AU (393.64 Gm)
Perihelion 1.7956 AU (268.62 Gm)
2.2135 AU (331.13 Gm)
Eccentricity 0.18877
3.29 yr (1202.8 d)
15.738°
0° 17m 57.444s / day
Inclination 1.9761°
102.10°
215.02°
Earth MOID 0.780633 AU (116.7810 Gm)
Jupiter MOID 2.64507 AU (395.697 Gm)
Jupiter Tisserand parameter 3.631
Physical characteristics
Dimensions 7.809±0.077 km[4]
11.23±0.37 km[5]
9.85 km (calculated)[3]
4.812 h (0.2005 d)[lower-alpha 1][1]
5.8 h[6]
4.8111±0.0025 h[7]
4.800±0.020 h[8]
0.1825±0.0243[4]
0.185±0.031[5]
0.24 (assumed)[3]
S [3]
12.2

    1789 Dobrovolsky, provisional designation 1966 QC, is an asteroid from the inner regions of the asteroid belt, about 10 kilometers in diameter. It was discovered by Russian female astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on 19 August 1966.[9]

    The asteroid is a member of the Flora family, a large group of stony S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 1.8–2.6 AU once every 3.29 years (1,203 days). Its orbit shows an eccentricity of 0.19 and is inclined by 2 degrees to the plane of the ecliptic. It has a rotation period of 4.812 hours and a geometric albedo of about 0.19, as measured by the Wide-field Infrared Survey Explorer and subsequent NEOWISE mission.[4][5] The Collaborative Asteroid Lightcurve Link (CALL), however, assumes an albedo around 0.24.[3]

    The asteroid was named in honor of Ukrainian–Soviet cosmonaut Georgiy Timofeyevich Dobrovolsky, commander of the Soyuz 11 spacecraft, who died on 30 June 1971 during the vehicle's return to Earth after completing the flight program of the first manned orbital station, Salyut. The subsequently numbered minor planets 1790 Volkov and 1791 Patsayev were named in honour of his dead crew members.[2] The names of all three cosmonauts are also engraved on the plaque next to the sculpture of the Fallen Astronaut on the Moon, which was placed there during the Apollo 15 mission, containing the names of eight American astronauts and six Soviet cosmonauts, who had all died in service.

    References

    1. ↑ Skiff, B.A. (2011) web: rotation period 4.812±0.001 hours with a brightness amplitude of 0.13 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1746) Brouwer
    1. 1 2 3 "JPL Small-Body Database Browser: 1789 Dobrovolsky (1966 QC)" (2015-09-03 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1789) Dobrovolsky. Springer Berlin Heidelberg. p. 143. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 4 5 "LCDB Data for (1789) Dobrovolsky". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 3 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 November 2015.
    5. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; Cabrera, M. S. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved November 2015.
    6. ↑ Lagerkvist, C.-I. (March 1978). "Photographic photometry of 110 main-belt asteroids". Astronomy and Astrophysics Supplement Series: 361–381. Bibcode:1978A&AS...31..361L. Retrieved November 2015.
    7. ↑ 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 November 2015.
    8. ↑ 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:1506.08493. Bibcode:2015ApJS..219...27C. doi:10.1088/0067-0049/219/2/27. Retrieved November 2015.
    9. ↑ "1789 Dobrovolsky (1966 QC)". Minor Planet Center. Retrieved November 2015.

    External links


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