3409 Abramov

3409 Abramov, provisional designation 1977 RE₆, is a stony Koronian asteroid from the outer region of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 9 September 1977, by Soviet–Russian astronomer Nikolai Chernykh at Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula.^[8] The asteroid was named after Russian writer Fyodor Abramov.^[2]

3409 Abramov

Discovery[1]
Discovered by	N. Chernykh
Discovery site	Crimean Astrophysical Obs.
Discovery date	9 September 1977
Designations
MPC designation	(3409) Abramov
Named after	Fyodor Abramov (Russian writer)[2]
Alternative designations	1977 RE6 · 1929 UP 1929 VD · 1948 TW1 1958 VU · 1972 TF5 1979 BS1 · 1980 GF1 1982 VY5 · 1985 GD1
Minor planet category	main-belt · Koronis[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc	87.42 yr (31,930 days)
Aphelion	3.0914 AU
Perihelion	2.6174 AU
Semi-major axis	2.8544 AU
Eccentricity	0.0830
Orbital period (sidereal)	4.82 yr (1,761 days)
Mean anomaly	92.335°
Mean motion	0° 12m 15.84s / day
Inclination	1.4019°
Longitude of ascending node	211.41°
Argument of perihelion	168.58°
Physical characteristics
Dimensions	10.765±0.168 km[4][5] 10.80 km (calculated)[3] 11.402±1.938[a]
Synodic rotation period	7.791±0.002 h[6] 9.0±0.4 h[7]
Geometric albedo	0.236±0.044[a] 0.24 (assumed)[3] 0.242±0.060[4][5]
Spectral type	S[3]
Absolute magnitude (H)	12.0[1][3][4][a]

Orbit and classification

The S-type asteroid is a member of the Koronis family, a group consisting of about 200 known stony bodies with nearly ecliptical orbits. It orbits the Sun in the outer main-belt at a distance of 2.6–3.1 AU once every 4 years and 10 months (1,761 days). Its orbit has an eccentricity of 0.08 and an inclination of 1° with respect to the ecliptic.^[1] The first precovery was obtained at Lowell Observatory in 1929, extending the asteroid's observation arc by 48 years prior to its discovery.^[8]

Physical characteristics

Lightcurves

In 2008, a photometric lightcurve analysis at the Universidad de Monterry Observatory, Mexico, gave a well-defined rotation period of 7.791±0.002 hours with a brightness amplitude of 0.50 in magnitude (U=3),^[6] while an observation by astronomer René Roy rendered a tentative period of 9.0±0.4 hours (U=2).^[7]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of the NASA's space-based Wide-field Infrared Survey Explorer, the asteroid has an albedo of 0.24 with a corresponding diameter of 10.8 kilometers.^[4][5] The Collaborative Asteroid Lightcurve Link and others closely agree with these findings.^[3][a]

Naming

This minor planet was named in memory of Russian novelist and literary critic Fyodor Abramov (1920–1983), whose work focused on the difficult lives of the Russian peasant class.^[2] The official naming citation was published by the Minor Planet Center on 1 September 1993 (M.P.C. 22498).^[9]

Notes

1. Ryan (2015): mean diameter of 11.402±1.938 and an albedo of 0.236±0.044. Summary figures for (3409) Abramov at Collaborative Asteroid Lightcurve Link (CALL)