14335 Alexosipov

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14335 Alexosipov
Discovery [1]
Discovered by N. Chernykh
Discovery site Crimean Astrophysical Obs.
Discovery date 3 September 1981
MPC designation (14335) Alexosipov
Named after
Alexandr Osipov
1981 RR3 · 1971 SZ1
1971 TE1
main-belt · Flora[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 45.69 yr (16,689 days)
Aphelion 2.7038 AU
Perihelion 1.7656 AU
2.2347 AU
Eccentricity 0.2099
3.34 yr (1,220 days)
0° 17m 42s / day
Inclination 5.9013°
Earth MOID 0.7595 AU
Physical characteristics
Dimensions 3.92 km (calculated)[3]
4.176±0.101 km[4][5]
7.18±0.01 h[a]
0.24 (assumed)[3]
14.2[1][3] · 14.20±0.46[6] · 13.9[4]

14335 Alexosipov, provisional designation 1981 RR3, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered by Soviet–Russian astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnyj, on 3 September 1981.[7] The asteroid was named after astronomer Alexandr Osipov.[2]

Orbit and classification[edit]

Alexosipov is a member of the Flora family, one of the largest groups of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,220 days). Its orbit has an eccentricity of 0.21 and an inclination of 6° with respect to the ecliptic.[1] The first astrometric observations were already made at the discovering observatory in 1971, 10 years prior to its discovery. However, these observations were not used to extend the asteroid's observation arc.[7]

Physical characteristics[edit]

Alexosipov has been characterized as a common S-type asteroid by Pan-STARRS photometric survey.[6]

Rotation period[edit]

A rotational lightcurve of Alexosipov was obtained from photometric observations made by American astronomer Brian Skiff in October 2011. It gave a well-defined rotation period of 7.18±0.01 hours with a low brightness variation of 0.10 in magnitude (U=3).[a] A low brightness amplitude typically indicates that the body has a nearly spheroidal shape.

Diameter and albedo[edit]

According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Alexosipov measures 4.2 kilometers in diameter and its surface has an albedo of 0.279,[4][5] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – which derives from 8 Flora, the largest member and namesake of this orbital family – and calculates a diameter of 3.9 kilometers with an absolute magnitude of 14.2.[3]


This minor planet was named in memory of astronomer Alexandr Kuzmich Osipov (1920–2004), observer of artificial satellites, the Moon, planets and comets at the Astronomical Observatory of Kyiv National University in Kiev, Ukraine. He is described as a skilled teacher for many generations of students.[2] The approved naming citation was published by the Minor Planet Center on 15 December 2005 (M.P.C. 55721).[8]


  1. ^ a b Skiff (2011) web: rotation period 7.18±0.01 hours with a brightness amplitude of 0.10 mag. Summary figures for (14335) Alexosipov at Collaborative Asteroid Lightcurve Link (CALL)


  1. ^ a b c d "JPL Small-Body Database Browser: 14335 Alexosipov (1981 RR3)" (2017-06-02 last obs.). Jet Propulsion Laboratory. Retrieved 5 July 2017. 
  2. ^ a b c Schmadel, Lutz D. (2006). Dictionary of Minor Planet Names – (14335) Alexosipov, Addendum to Fifth Edition: 2003–2005. Springer Berlin Heidelberg. p. 85. ISBN 978-3-540-34360-8. Retrieved 11 May 2016. 
  3. ^ a b c d e f "LCDB Data for (14335) Alexosipov". Asteroid Lightcurve Database (LCDB). Retrieved 11 May 2016. 
  4. ^ 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:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 11 May 2016. 
  5. ^ 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:1109.4096Freely accessible. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 3 December 2016. 
  6. ^ a b c 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:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 11 May 2016. 
  7. ^ a b "14335 Alexosipov (1981 RR3)". Minor Planet Center. Retrieved 11 May 2016. 
  8. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 11 May 2016. 

External links[edit]