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2862 Vavilov
Discovery [1]
Discovered byN. Chernykh
Discovery siteCrimean Astrophysical Obs.
Discovery date15 May 1977
Designations
(2862) Vavilov
Named after
Nikolai Vavilov and
Sergey Ivanovich Vavilov
(Russian scientists)[2]
1977 JP · 1931 DY
1972 VF1 · 1978 SV2
main-belt · (inner)
Flora [3] · background [4][5]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc86.60 yr (31,631 days)
Aphelion2.4532 AU
Perihelion1.9490 AU
2.2011 AU
Eccentricity0.1145
3.27 yr (1,193 days)
194.09°
0° 18m 6.48s / day
Inclination3.4849°
225.83°
278.04°
Physical characteristics
Dimensions6.031±0.681 km[6][7]
6.44±0.57 km[8]
7.82 km (calculated)[3]
7.95±1.41 km[9]
800 h[a]
0.21±0.12[9]
0.24 (assumed)[3]
0.323±0.059[8]
0.4039±0.0762[7]
0.404±0.076[6]
S (assumed)[3]
12.7[3][7] · 12.78±0.66[10] · 12.80[1][8] · 13.11[9]

2862 Vavilov, provisional designation 1977 JP, is a stony background asteroid and exceptionally slow rotator from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 15 May 1977, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula.[11] The asteroid was named after Russian plant geneticist Nikolai Vavilov and his physicist brother Sergey Ivanovich Vavilov.[2]

Orbit and classification[edit]

Vavilov is located in the dynamical region of the Flora family (402), a giant asteroid family and the largest family of stony asteroids in the main-belt.[3] However, it is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[4][5]

It orbits the Sun in the inner main-belt at a distance of 1.9–2.5 AU once every 3 years and 3 months (1,193 days). Its orbit has an eccentricity of 0.11 and an inclination of 3° with respect to the ecliptic.[1]

The body's observation arc begins with its first identification as 1931 DY at Lowell Observatory in February 1931, more than 46 years prior to its official discovery observation at Nauchnij.[11]

Physical characteristics[edit]

Vavilov is an assumed stony S-type asteroid,[3] which is also the overall spectral type for members of the Flora family.

Rotation period[edit]

In February 2006, a rotational lightcurve of Vavilov was obtained from photometric observations by Petr Pravec at Ondřejov Observatory in the Czech Republic. Lightcurve analysis gave a rotation period of 800 hours with a brightness amplitude of at least 0.4 magnitude (U=2)[a]

With a period above 500 hours, Vavilov is one of only a few dozen slow rotators with such an extreme spin rate currently known to exists.

Diameter and albedo[edit]

According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Vavilov measures between 6.031 and 7.95 kilometers in diameter and its surface has an albedo between 0.21 and 0.404.[6][7][8][9]

The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the Flora family's parent body – and calculates a diameter of 7.82 kilometers based on an absolute magnitude of 12.7.[3]

Naming[edit]

This minor planet was named in memory of Russian plant geneticist Nikolai Vavilov (1887–1943) and his physicist brother Sergey Ivanovich Vavilov (1891-1951).[2] The official naming citation was published by the Minor Planet Center on 18 September 1986 (M.P.C. 11157).[12] The lunar crater Vavilov was also named in their honor.[2]

Notes[edit]

  1. ^ a b Pravec (2006) web: lightcurve plot for (2862) Vavilov with rotation period 800 hours and a brightness amplitude of 0.4 mag. Quality code of 2. Observer's comment: "The apparently continuous decrease over the 8-day interval suggests a period on an order of 800 hours or longer; A>=0.4 mag." Summary figures at LCDB and at Ondrejov Asteroid Photometry Project, see (data sheet)

References[edit]

  1. ^ a b c d "JPL Small-Body Database Browser: 2862 Vavilov (1977 JP)" (2017-09-30 last obs.). Jet Propulsion Laboratory. Retrieved 21 October 2017.
  2. ^ a b c d Schmadel, Lutz D. (2007). "(2862) Vavilov". Dictionary of Minor Planet Names – (2862) Vavilov. Springer Berlin Heidelberg. p. 235. doi:10.1007/978-3-540-29925-7_2863. ISBN 978-3-540-00238-3.
  3. ^ a b c d e f g h "LCDB Data for (2862) Vavilov". Asteroid Lightcurve Database (LCDB). Retrieved 21 October 2017.
  4. ^ a b "Asteroid 2862 Vavilov – Asteroid Dynamical Families V4.1". Small Bodies Data Ferret. Retrieved 29 October 2019.
  5. ^ a b "Asteroid 2862 Vavilov – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.
  6. ^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. S2CID 118745497. Retrieved 21 October 2017.
  7. ^ a b c d 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. S2CID 35447010.
  8. ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153)
  9. ^ a b c d Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63.
  10. ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. S2CID 53493339. Retrieved 21 October 2017.
  11. ^ a b "2862 Vavilov (1977 JP)". Minor Planet Center. Retrieved 21 October 2017.
  12. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 21 October 2017.

External links[edit]

source: https://en.wikipedia.org/wiki/2862_Vavilov

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