7369 Gavrilin

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7369 Gavrilin
Discovery 
Synodic rotation period
49.12 h[9][a][b]
0.27[5]
0.28[6][7]
0.305[8]
S (assumed)[10]
13.10[6][7]
13.12[9]
13.20[1][2][8]
13.53[5]

7369 Gavrilin, provisional designation 1975 AN, is a stony Phocaean

rotation period of 49.1 hours.[10] It was named after Russian composer Valery Gavrilin.[1] The discovery of its 2.4-kilometer sized minor-planet moon was announced in October 2008.[4]

Orbit and classification

Gavrilin is both a member of the main belt's

main belt and the near-Earth populations, crossing the orbit of Mars at 1.66 AU.[1][3]

It orbits the Sun in the

semi-major axis of 2.37 AU). Its orbit has an eccentricity of 0.32 and an inclination of 22° with respect to the ecliptic.[2] The body's observation arc begins with its first observation as 1975 AN at the Purple Mountain Observatory in January 1975, eleven days prior to its official discovery observation, 1975 AX by Tamara Smirnova at Nauchnyj.[1]

Numbering and naming

This

M.P.C. 38196).[11]

Physical characteristics

Gavrilin is an assumed, stony

spectral type in the inner asteroid belt. The assumption also agrees with the overall spectral type for the Phocaea family.[12]

Rotation period and satellite

In January 2008, rotational

U=3/3).[9][a][b]
The photometric observation also revealed that Gavrilin is a synchronous binary asteroid with a minor-planet moon in its orbit. The discovery was announced in October 2008. The satellite measures approximately 2.41 kilometers in diameter (a secondary-to-primary diameter-ratio of at least 0.32) and has an orbital period identical to that of the primary's rotation, 49.12 hours.[4][10][a]

Diameter and albedo

According to the survey carried out by the

albedo of 0.27 and 0.28, respectively.[5][6][7] A 2017-WISE-study dedicated to Mars-crossing asteroids determined a diameter of 5.51 kilometers despite a higher albedo of 0.305.[8] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a stony asteroid of 0.20 and calculates a diameter of 5.74 kilometers based on an absolute magnitude of 13.61, while the Johnston's Archive estimates a diameter of 7.54 kilometers for the primary.[4][10]

Sizable Mars-crosser

With a diameter of 5.5 kilometers, Gavrilin is one of the smallest "sizable" Mars-crossers (5–15 km). These include 3581 Alvarez (13.7 km) 1065 Amundsenia (9.8 km), 1139 Atami (9.4 km), 3737 Beckman (14.4 km), 1474 Beira (15.5 km), 5682 Beresford (7.3 km), 1011 Laodamia (7.4 km), 6170 Levasseur (5.7 km), 1727 Mette (5.4 km), 1131 Porzia (7.1 km), 1235 Schorria (5.6 km), 985 Rosina (8.2 km), 1310 Villigera (15.2 km), and 1468 Zomba (7 km), which are themselves smaller than the largest members of this dynamical group, namely, 132 Aethra, 323 Brucia (former Mars-crosser), 1508 Kemi, 2204 Lyyli and 512 Taurinensis, all larger than 20 kilometers.

Notes

  1. ^ a b c d Lightcurve plot (7369) Gavrilin by Higgins and Pravec, from Ondrejov data obtained by the NEO Photometric Program and collaborating projects. Pravec notes that the binary system has a lower limit of 0.36 for its secondary to primary diameter ratio (H estimated assuming G).
  2. ^ a b Pravec (2008) web: rotation period 49.12 hours with a brightness amplitude of 0.25±0.02 mag. Quality Code is 3. Summary figures for (7369) Gavrilin at the LCDB and Pravec, P.; Wolf, M.; Sarounova, L. (2008).

References

  1. ^ a b c d e f g h "7369 Gavrilin (1975 AN)". Minor Planet Center. Retrieved 14 November 2018.
  2. ^ a b c d "JPL Small-Body Database Browser: 7369 Gavrilin (1975 AN)" (2018-10-20 last obs.). Jet Propulsion Laboratory. Retrieved 14 November 2018.
  3. ^ a b "Asteroid 7369 Gavrilin". Small Bodies Data Ferret. Retrieved 14 November 2018.
  4. ^ a b c d e Johnston, Wm. Robert (21 September 2014). "Asteroids with Satellites Database – (450894) 2008 BT18". Johnston's Archive. Retrieved 14 November 2018.
  5. ^
    doi:10.3847/0004-6256/152/3/63
    .
  6. ^
    Bibcode:2016PDSS..247.....M
    . Retrieved 14 November 2018.
  7. ^
    doi:10.1088/0004-637X/814/2/117
    .
  8. ^
    doi:10.1051/0004-6361/201629917
    .
  9. ^
    ISSN 1052-8091
    .
  10. ^ a b c d e "LCDB Data for (7369) Gavrilin". Asteroid Lightcurve Database (LCDB). Retrieved 14 November 2018.
  11. ^ a b "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 14 November 2018.
  12. ISBN 9780816532131
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=7369_Gavrilin&oldid=1191630918"