Astronomy:1452 Hunnia

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1452 Hunnia
Discovery[1]
Discovered byG. Kulin
Discovery siteKonkoly Obs.
Discovery date26 February 1938
Designations
(1452) Hunnia
Pronunciation/ˈhʌniə/[5]
Named afterHungarians[2]
(Nation of Hungaria)
1938 DZ1 · 1953 YA
1953 YM
Minor planet categorymain-belt · (outer)[3]
Meliboea[4]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc79.35 yr (28,981 days)
|{{{apsis}}}|helion}}3.7395 AU
|{{{apsis}}}|helion}}2.4798 AU
3.1096 AU
Eccentricity0.2025
Orbital period5.48 yr (2,003 days)
Mean anomaly194.78°
Mean motion0° 10m 46.92s / day
Inclination14.211°
Longitude of ascending node21.352°
94.487°
Physical characteristics
Dimensions18.76±5.25 km[6]
20.00±6.07 km[7]
20.910±0.107 km[8][9]
21.16 km (calculated)[3]
Rotation period17.2 h[10]
Geometric albedo0.0435±0.0036[9]
0.046±0.003[8]
0.05±0.07[7]
0.057 (assumed)[3]
0.06±0.04[6]
C (assumed)[3]
Absolute magnitude (H)12.10[1][3][6][9] · 12.19[7]


1452 Hunnia, provisional designation 1938 DZ1, is a carbonaceous Meliboean asteroid from the outer regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 26 February 1938, by Hungarian astronomer György Kulin at the Konkoly Observatory in Budapest.[11] The asteroid was named in honor of the Hungarian nation.[2]

Orbit and classification

Hunnia is a member of the Meliboea family (604),[4] a smaller asteroid family of a few hundred carbonaceous outer-belt asteroids, named after 137 Meliboea.[12]:23 It orbits the Sun at a distance of 2.5–3.7 AU once every 5 years and 6 months (2,003 days). Its orbit has an eccentricity of 0.20 and an inclination of 14° with respect to the ecliptic.[1]

The body's observation arc begins at Goethe Link Observatory in March 1949, more than 11 years after its official discovery observation at Konkoly.[11] (The large time span without astrometric follow-up observations coincides with the period of WWII.)

Physical characteristics

Hunnia is an assumed carbonaceous C-type asteroid,[3] in agreement with the overall spectral type of the Meliboea family.[12]:23

Rotation period

Between February and March 1998, a rotational lightcurve of Hunnia was obtained from photometric observations by Hungarian astronomers Krisztián Sárneczky, Gyula Szabó and László Kiss. Lightcurve analysis gave a rotation period of 17.2 hours with a brightness amplitude of 0.34 magnitude ({{{1}}}).[10] No other lightcurves have since been obtained.[3]

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Hunnia measures between 18.76 and 20.910 kilometers in diameter and its surface has an albedo between 0.0435 and 0.06.[6][7][8][9]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 21.16 kilometers based on an absolute magnitude of 12.1.[3]

Naming

This minor planet was named in honor of the Hungarian nation.[2] Also known as Magyars, the Hungarians are believed to be of Hunnic heritage. The official naming citation was published by the Minor Planet Center on 1 February 1980 (M.P.C. 5182).[13]

References

  1. ↑ 1.0 1.1 1.2 1.3 "JPL Small-Body Database Browser: 1452 Hunnia (1938 DZ1)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001452. 
  2. ↑ 2.0 2.1 2.2 Schmadel, Lutz D. (2007). "(1452) Hunnia". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 116. doi:10.1007/978-3-540-29925-7_1453. ISBN 978-3-540-00238-3. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 "LCDB Data for (1452) Hunnia". Asteroid Lightcurve Database (LCDB). http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1452%7CHunnia. 
  4. ↑ 4.0 4.1 "Asteroid 1452 Hunnia – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1452+Hunnia#Asteroid%201452%20HunniaEAR-A-VARGBDET-5-NESVORNYFAM-V3.0. 
  5. ↑ Hun, Hunnian (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Hun%2C+Hunnian  (Subscription or UK public library membership required.)
  6. ↑ 6.0 6.1 6.2 6.3 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. doi:10.1088/0004-637X/814/2/117. Bibcode: 2015ApJ...814..117N. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N. Retrieved 21 October 2017. 
  7. ↑ 7.0 7.1 7.2 7.3 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. doi:10.3847/0004-6256/152/3/63. Bibcode: 2016AJ....152...63N. 
  8. ↑ 8.0 8.1 8.2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J. et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal 741 (2): 20. doi:10.1088/0004-637X/741/2/68. Bibcode: 2011ApJ...741...68M. http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M. Retrieved 21 October 2017. 
  9. ↑ 9.0 9.1 9.2 9.3 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. doi:10.1088/0004-637X/741/2/90. Bibcode: 2011ApJ...741...90M. 
  10. ↑ 10.0 10.1 Sárneczky, K.; Szabó, Gy.; Kiss, L. L. (June 1999). "CCD observations of 11 faint asteroids". Astronomy and Astrophysics Supplement 137 (2): 363–368. doi:10.1051/aas:1999251. Bibcode: 1999A&AS..137..363S. https://aas.aanda.org/articles/aas/pdf/1999/11/ds1664.pdf. Retrieved 21 October 2017. 
  11. ↑ 11.0 11.1 "1452 Hunnia (1938 DZ1)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=1452. 
  12. ↑ 12.0 12.1 Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 978-0-8165-3213-1. Bibcode: 2015aste.book..297N. 
  13. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. 

External links



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