1979 Sakharov

1979 Sakharov
Discovery [1]
Discovered by Palomar–Leiden survey
C. J. van Houten, I. van Houten-Groeneveld and Tom Gehrels
Discovery site Palomar Obs.
Discovery date 24 September 1960
Designations
MPC designation 1979 Sakharov
Named after
 Andrei Sakharov[2]
2006 P–L · 1971 SQ3
1982 SZ12
main-belt · Vestian [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 55.47 yr (20261 days)
Aphelion 2.6107 AU (390.56 Gm)
Perihelion 2.1368 AU (319.66 Gm)
2.3737 AU (355.10 Gm)
Eccentricity 0.099818
3.66 yr (1335.8 d)
356.24°
0° 16m 10.2s / day
Inclination 6.0460°
202.66°
220.72°
Earth MOID 1.1524 AU (172.40 Gm)
Jupiter MOID 2.6679 AU (399.11 Gm)
Jupiter Tisserand parameter 3.529
Physical characteristics
Dimensions 4.760±0.211 km[4]
4.512 km[5]
4.51 km (taken)[3]
7.5209±0.0002 h[lower-alpha 1]
7.521±0.005 h[lower-alpha 1]
7.5202±0.0003 h[6]
7.589±0.001 h[7]
7.5209 h (0.31337 d)[1]
0.3103±0.0450[4]
0.262[5]
S [3]
13.6[1]

    1979 Sakharov, also designated 2006 P–L, is a stony vestian asteroid from the inner regions of the asteroid belt, about 5 kilometers in diameter. It was discovered by the Dutch astronomers Ingrid and Cornelis van Houten, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the U.S. Palomar Observatory in California, on September 24, 1960.[8]

    The S-type asteroid is a member of the Vesta family. It orbits the Sun at a distance of 2.1–2.6 AU once every 3.66 years (1336 days). It has a well-defined rotation period of seven and a half hours, determined by several photometric light-curve analysis.[6][7] The body's albedo has been determined by WISE and NEOWISE surveys and varies between 0.26 and 0.31.[4][5]

    It is named in honour of a distinguished Russian mathematician and physicist Andrei Sakharov, who received the 1975 Nobel peace prize.[2]

    The designation P–L stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld at Leiden Observatory. The trio are credited with several thousand asteroid discoveries.

    References

    1. 1 2 Pravec (2011) web: rotation period 7.5209±0.0002 hours with a brightness amplitude of 0.13 magnitude, and Pravec(2013) web: rotation period 7.521±0.005 hours with a brightness amplitude of 0.21 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1979) Sakharov
    1. 1 2 3 4 "JPL Small-Body Database Browser: 1979 Sakharov (2006 P-L)" (2015-11-16 last obs.). Jet Propulsion Laboratory. Retrieved 18 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1979) Sakharov. Springer Berlin Heidelberg. p. 160. ISBN 978-3-540-29925-7. Retrieved October 2015.
    3. 1 2 3 "LCDB Data for (1979) Sakharov". Asteroid Lightcurve Database (LCDB). Retrieved December 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 December 2015.
    5. 1 2 3 Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved December 2015.
    6. 1 2 Oey, Julian; Inasaridze, Raguli Ya.; Kvaratskhelia, Otar I.; Ayvazian, Vova; Chirony, Vasilij G.; Krugly, Yurij N.; et al. (July 2013). "Lightcurve Analysis is Search of Binary Asteroids". The Minor Planet Bulletin 40 (3): 169–172. Bibcode:2013MPBu...40..169O. ISSN 1052-8091. Retrieved December 2015.
    7. 1 2 Oey, Julian (October 2014). "Lightcurve Analysis of Asteroids from Blue Mountains Observatory in 2013". The Minor Planet Bulletin 41 (4): 276–281. Bibcode:2014MPBu...41..276O. ISSN 1052-8091. Retrieved December 2015.
    8. ↑ "1979 Sakharov (2006 P-L)". Minor Planet Center. Retrieved December 2015.

    External links


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