1390 Abastumani

1390 Abastumani (prov. designation: 1935 TA) is a very large and dark background asteroid from the outer region of the asteroid belt. It was discovered on 3 October 1935, by Russian astronomer Pelageya Shajn at the Simeiz Observatory on the Crimean peninsula.[3] The primitive P-type asteroid has a rotation period of 17.1 hours and measures approximately 101 kilometers (63 miles) in diameter. It was named for the Georgian town of Abastumani.[2]

1390 Abastumani
Shape model of Abastumani from its lightcurve
Discovery [1]
Discovered byP. Shajn
Discovery siteSimeiz Obs.
Discovery date3 October 1935
Designations
(1390) Abastumani
Named after
Abastumani
(Georgian town)[2]
1935 TA · 1926 GN
1929 UL · A907 GN
A916 VA
Orbital characteristics [1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc86.80 yr (31,705 days)
Aphelion3.5547 AU
Perihelion3.3166 AU
3.4356 AU
Eccentricity0.0347
6.37 yr (2,326 days)
290.65°
0° 9m 17.28s / day
Inclination19.932°
28.919°
332.76°
Physical characteristics
Mean diameter
95.849±2.283 km[6]
98.30±2.03 km[7]
101.58±2.3 km (IRAS:12)[8]
107.827±6.977 km[9]
17.100±0.005 h[10]
0.0264±0.0121[9]
0.0298±0.001 (IRAS:12)[8]
0.033±0.002[6][7]
9.40[1][7][8][9][11]

    Orbit and classification

    The dark and reddish asteroid is classified as a rare P-type asteroid in the Tholen taxonomic scheme, of which only a few dozens bodies are currently known.[12] It orbits the Sun at a distance of 3.3–3.6 AU once every 6 years and 4 months (2,326 days). Its orbit has an eccentricity of 0.03 and an inclination of 20° with respect to the ecliptic.[1] The first used precovery was taken at Lowell Observatory in 1929, extending the asteroid's observation arc by 6 years prior to its discovery.[3]

    Discovery

    Abastumani was discovered on 3 October 1935, by Soviet–Russian astronomer Pelageya Shajn at Simeiz Observatory on the Crimean peninsula.[3] On the same night, the asteroid was independently discovered by South African astronomer Cyril Jackson at Johannesburg Observatory.[2] It was one of the last large-sized bodies discovered in the outer belt (also see 1269 Rollandia and 1902 Shaposhnikov, discovered in 1930 and 1972, respectively).

    Naming

    This minor planet is named after the spa town of Abastumani located in the Caucasus Mountains of Georgia. It is now the place where the Abastuman Astronomical Observatory (119) is situated.[2] The official naming citation was published by the Minor Planet Center in November 1952 (M.P.C. 838).[13]

    Physical characteristics

    In the Tholen classification, Abastumani is a primitive, carbonaceous P-type asteroid, a common spectral type in the outer main-belt and among the Jupiter trojan population.[1]

    Rotation period

    In April 2002, a rotational lightcurve of Abastumani was obtained from photometric observation by astronomer John Gross at the U.S. Sonoran Skies Observatory (G94) in Benson, Arizona. It gave a rotation period of 17.100±0.005 hours with a brightness variation of 0.15 in magnitude (U=2).[10]

    Diameter and albedo

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures between 98.3 and 107.8 kilometers in diameter, and its surface has a very low albedo between 0.026 and 0.033.[7][8][9] The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, i.e. a diameter of 101.5 kilometers and an albedo of 0.0298.[11]

    References
    1. "JPL Small-Body Database Browser: 1390 Abastumani (1935 TA)" (2016-08-15 last obs.). Jet Propulsion Laboratory. Retrieved 1 December 2016.
    2. Schmadel, Lutz D. (2007). "(1390) Abastumani". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 112. doi:10.1007/978-3-540-29925-7_1391. ISBN 978-3-540-00238-3.
    3. "1390 Abastumani (1935 TA)". Minor Planet Center. Retrieved 3 August 2016.
    4. "Asteroid 1390 Abastumani – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 16 March 2020.
    5. "Asteroid 1390 Abastumani". Small Bodies Data Ferret. Retrieved 16 March 2020.
    6. Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 1 December 2016.
    7. 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. Retrieved 13 June 2018. (online, AcuA catalog p. 153)
    8. Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System – IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 17 October 2019.
    9. 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. Retrieved 3 August 2016.
    10. Gross, John (September 2003). "Sonoran Skies Observatory lightcurve results for asteroids 1054, 1390, 1813 1838, 2988, 3167, 4448, and 5262" (PDF). Minor Planet Bulletin. 30 (3): 44–46. Bibcode:2003MPBu...30...44G. ISSN 1052-8091. Retrieved 16 March 2020.
    11. "LCDB Data for (1390) Abastumani". Asteroid Lightcurve Database (LCDB). Retrieved 3 August 2016.
    12. "JPL Small-Body Database Search Engine: spec. type = P (Tholen)". JPL Solar System Dynamics. Retrieved 3 January 2016.
    13. Schmadel, Lutz D. "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008). Springer Berlin Heidelberg. p. 221. doi:10.1007/978-3-642-01965-4. ISBN 978-3-642-01964-7.
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