Wikipedia

1452 Hunnia

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.[3]

1452 Hunnia
Discovery[1]
Discovered byG. Kulin
Discovery siteKonkoly Obs.
Discovery date26 February 1938
Designations
(1452) Hunnia
Pronunciation/ˈhʌniə/[2]
Named after
Hungarians[3]
(Nation of Hungaria)
1938 DZ1 · 1953 YA
1953 YM
main-belt · (outer)[4]
Meliboea[5]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc79.35 yr (28,981 days)
Aphelion3.7395 AU
Perihelion2.4798 AU
3.1096 AU
Eccentricity0.2025
5.48 yr (2,003 days)
194.78°
0° 10m 46.92s / day
Inclination14.211°
21.352°
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)[4]
17.2 h[10]
0.0435±0.0036[9]
0.046±0.003[8]
0.05±0.07[7]
0.057 (assumed)[4]
0.06±0.04[6]
C (assumed)[4]
12.10[1][4][6][9] · 12.19[7]

Orbit and classification

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Hunnia is a member of the Meliboea family (604),[5] 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

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Hunnia is an assumed carbonaceous C-type asteroid,[4] in agreement with the overall spectral type of the Meliboea family.[12]: 23 

Rotation period

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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 (U=2).[10] No other lightcurves have since been obtained.[4]

Diameter and albedo

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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.[4]

Naming

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This minor planet was named in honor of the Hungarian nation.[3] 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

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  1. ^ a b c d "JPL Small-Body Database Browser: 1452 Hunnia (1938 DZ1)" (2017-07-02 last obs.). Jet Propulsion Laboratory. Retrieved 21 October 2017.
  2. ^ "Hun, Hunnian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  3. ^ a b c 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.
  4. ^ a b c d e f g h "LCDB Data for (1452) Hunnia". Asteroid Lightcurve Database (LCDB). Retrieved 21 October 2017.
  5. ^ a b "Asteroid 1452 Hunnia – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
  6. ^ a b c d 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. Retrieved 21 October 2017.
  7. ^ a b c d 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.
  8. ^ a b c 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. arXiv:1109.4096. Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68. Retrieved 21 October 2017.
  9. ^ a b c d 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.
  10. ^ a b Sárneczky, K.; Szabó, Gy.; Kiss, L. L. (June 1999). "CCD observations of 11 faint asteroids" (PDF). Astronomy and Astrophysics Supplement. 137 (2): 363–368. Bibcode:1999A&AS..137..363S. doi:10.1051/aas:1999251. Retrieved 21 October 2017.
  11. ^ a b "1452 Hunnia (1938 DZ1)". Minor Planet Center. Retrieved 21 October 2017.
  12. ^ a b Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV. pp. 297–321. arXiv:1502.01628. Bibcode:2015aste.book..297N. doi:10.2458/azu_uapress_9780816532131-ch016. ISBN 978-0-8165-3213-1.
  13. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 21 October 2017.
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