2043 Ortutay
Discovery [1]
Discovered byG. Kulin
Discovery siteKonkoly Obs.
Discovery date12 November 1936
Designations
(2043) Ortutay
Named after
Gyula Ortutay
(Hungarian ethnographer)[2]
1936 TH · 1935 PE
1947 TD · 1947 VA
1951 LQ · 1952 QG
1958 UN · 1958 XR
1963 SN · 1969 UY
1971 DB · 1972 HS1
1974 SW1 · 1975 XT5
A908 QB
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc108.61 yr (39,668 days)
Aphelion3.4510 AU
Perihelion2.7602 AU
3.1056 AU
Eccentricity0.1112
5.47 yr (1,999 days)
282.90°
0° 10m 48.36s / day
Inclination3.0745°
321.21°
60.334°
Physical characteristics
Dimensions42.13±15.15 km[4]
44.14±15.49 km[5]
44.69 km (derived)[3]
48.460±0.215 km[6]
49.32±0.90 km[7]
54.117±0.677 km[8]
7.7475±0.0005 h[9]
0.0317±0.0122[8]
0.036±0.002[7]
0.040±0.009[6]
0.0423 (derived)[3]
0.05±0.02[5]
0.05±0.05[4]
X [10] · C [3]
10.64±0.35[10] · 10.7[5][8] · 10.8[1][3][7] · 10.93[4]

    2043 Ortutay, provisional designation 1936 TH, is a dark asteroid from the outer regions of the asteroid belt, approximately 45 kilometers in diameter. The asteroid was discovered by Hungarian astronomer György Kulin at the Konkoly Observatory, Budapest, on 12 November 1936.[11] It was named after Hungarian ethnographer Gyula Ortutay.[2]

    Classification and orbit

    Ortutay orbits the Sun in the outer main-belt at a distance of 2.8–3.5 AU once every 5 years and 6 months (1,999 days). Its orbit has an eccentricity of 0.11 and an inclination of 3° with respect to the ecliptic.[1]

    The asteroid was first identified as A908 QB at Heidelberg Observatory in August 1908, extending the body's observation arc by 28 years prior to its official discovery observation at Konkoly.[11]

    Physical characteristics

    Ortutay has been characterized as an X-type asteroid by Pan-STARRS photometric survey.[10] The body's low albedo suggest that it is a carbonaceous C-type asteroid.[3]

    Rotation period

    In December 2013, a rotational lightcurve of Ortutay was obtained from photometric observations by astronomer Kim Lang at the Klokkerholm Observatory in Denmark. Lightcurve analysis gave a rotation period of 7.7475 hours with a brightness variation of 0.44 magnitude (U=3-).[9]

    Diameter and albedo

    According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Ortutay measures between 42.13 and 54.117 kilometers in diameter and its surface has an albedo between 0.0317 and 0.05.[4][5][6][7][8]

    The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0423 and a diameter of 44.69 kilometers based on an absolute magnitude of 10.8.[3]

    Naming

    This minor planet was named in memory of Hungarian Gyula Ortutay (1910–1978), a professor of ethnography and Hungarian politician, who fostered the popularization of astronomy.[2] In the late 1940s, he was Hungary's Minister of Religion and Education. The approved naming citation was published by the Minor Planet Center on 1 February 1980 (M.P.C. 5183).[12]

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 2043 Ortutay (1936 TH)" (2017-03-31 last obs.). Jet Propulsion Laboratory. Retrieved 3 July 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(2043) Ortutay". Dictionary of Minor Planet Names – (2043) Ortutay. Springer Berlin Heidelberg. p. 165. doi:10.1007/978-3-540-29925-7_2044. ISBN 978-3-540-00238-3.
    3. 1 2 3 4 5 6 7 "LCDB Data for (2043) Ortutay". Asteroid Lightcurve Database (LCDB). Retrieved 3 July 2017.
    4. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos". The Astronomical Journal. 152 (3): 12. arXiv:1606.08923. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63.
    5. 1 2 3 4 Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. S2CID 9341381. Retrieved 3 July 2017.
    6. 1 2 3 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. S2CID 119293330. Retrieved 3 July 2017.
    7. 1 2 3 4 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. (online, AcuA catalog p. 153)
    8. 1 2 3 4 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. S2CID 35447010.
    9. 1 2 Lang, Kim (April 2015). "The Rotation Period of 2043 Ortutay". The Minor Planet Bulletin. 42 (2): 136–137. Bibcode:2015MPBu...42..136L. ISSN 1052-8091. Retrieved 3 July 2017.
    10. 1 2 3 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:1506.00762. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. S2CID 53493339. Retrieved 3 July 2017.
    11. 1 2 "2043 Ortutay (1936 TH)". Minor Planet Center. Retrieved 3 July 2017.
    12. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 3 July 2017.
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