astro.wikisort.org - Asteroid

5316 Filatov, provisional designation 1982 UB₇, is a carbonaceous asteroid and potentially slow rotator from the outer region of the asteroid belt, approximately 30 kilometers in diameter.

5316 Filatov

Discovery [1]
Discovered by	L. G. Karachkina
Discovery site	Crimean Astrophysical Obs.
Discovery date	21 October 1982
Designations
MPC designation	(5316) Filatov
Named after	Vladimir Filatov (ophthalmologist and surgeon)[2]
Alternative designations	1982 UB7 · 1982 XU3 1987 SF9 · 1991 LV3
Minor planet category	main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	34.44 yr (12,578 days)
Aphelion	3.2253 AU
Perihelion	3.0919 AU
Semi-major axis	3.1586 AU
Eccentricity	0.0211
Orbital period (sidereal)	5.61 yr (2,050 days)
Mean anomaly	18.907°
Mean motion	0° 10m 32.16s / day
Inclination	14.743°
Longitude of ascending node	230.22°
Argument of perihelion	240.87°
Physical characteristics
Dimensions	22.95 km (calculated)[3] 45.693±0.511 km[4]
Synodic rotation period	1061.3756±76.36 h[5]
Geometric albedo	0.019±0.003[4] 0.057 (assumed)[3]
Spectral type	C [3]
Absolute magnitude (H)	11.474±0.002 (R)[5] · 11.60[4] · 11.8[1] · 11.92[3] · 11.97±0.48[6]

The asteroid was discovered on 21 October 1982, by Russian astronomer Lyudmila Karachkina at the Crimean Astrophysical Observatory in Nauchnij on the Crimean peninsula.[7] It was later named for surgeon Vladimir Filatov.[2]

Orbit and classification

Filatov orbits the Sun in the outer main-belt at a distance of 3.1–3.2 AU once every 5 years and 7 months (2,050 days). Its orbit has an eccentricity of 0.02 and an inclination of 15° with respect to the ecliptic.[1] The body's observation arc begins at Nauchnij, 2 days after its official discovery observation.[7]

Physical characteristics

Potentially slow rotator

In November 2010, a rotational lightcurve of Filatov was obtained from photometric observations in the R-band at the Palomar Transient Factory in California. It gave an exceptionally long rotation period of 1061 hours with a brightness variation of 0.07 magnitude (U=1).[5]

However, the fragmentary lightcurve has received a low quality rating by the Collaborative Asteroid Lightcurve Link which means that the result could be completely wrong (also see potentially slow rotator).[3][5]

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Filatov measures 45.69 kilometers in diameter, and its surface has an albedo of 0.019,[4] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 22.95 kilometers with an absolute magnitude of 11.92.[3]

Naming

This minor planet was named in honor of Vladimir Filatov (1875–1956), a Russian and Ukrainian ophthalmologist and surgeon.[2] The official naming citation was published by the Minor Planet Center on 1 September 1993 (M.P.C. 22508).[8]

References

External links

• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
• 5316 Filatov at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 5316 Filatov at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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