1308 Halleria

1308 Halleria, provisional designation 1931 EB, is a carbonaceous Charis asteroid from the outer regions of the asteroid belt, approximately 43 kilometers in diameter. It was discovered on 12 March 1931, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory.[13] The asteroid was named after Albrecht von Haller a Swiss physician, botanist and poet.[2]

1308 Halleria
Discovery [1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date12 March 1931
Designations
(1308) Halleria
Named after
Albrecht von Haller [2]
(Swiss physiologist)
1931 EB · 1933 SP
1936 FU1 · 1938 SO1
1938 SP1 · 1953 TT
1963 VA · A901 DB
main-belt · (outer) [3]
Charis [4]
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc116.76 yr (42,645 days)
Aphelion2.9438 AU
Perihelion2.8738 AU
2.9088 AU
Eccentricity0.0120
4.96 yr (1,812 days)
173.29°
0° 11m 55.32s / day
Inclination5.5766°
354.14°
164.00°
Physical characteristics
Dimensions39.33±12.48 km[5]
41.87±10.07 km[6]
43.13 km (derived)[3]
43.16±1.4 km[7]
45.05±0.57 km[8]
46.951±0.275 km[9]
50.046±0.301 km[10]
6.013 h[lower-alpha 1]
6.026±0.002 h[11]
6.028±0.004 h[11]
0.0338±0.0116[10]
0.038±0.009[9]
0.0415 (derived)[3]
0.042±0.001[8]
0.0454±0.003[7]
0.05±0.06[6]
0.05±0.07[5]
C (assumed)[3]
10.80[5][7][8][10] · 10.9[1][3] · 10.95[6] · 10.97±0.28[12]

    Orbit and classification

    Halleria belongs to the carbonaceous Charis family (616),[4] a family of more than 800 members, named after its parent body 627 Charis.[14]:23 It orbits the Sun in the outer main-belt at a distance of 2.87–2.94 AU once every 4 years and 12 months (1,812 days; semi-major axis 2.91 AU). Its orbit has an eccentricity of 0.01 and an inclination of 6° with respect to the ecliptic.[1]

    The asteroid was first observed as A901 DB at Heidelberg Observatory in February 1901. The body's observation arc begins with its official discovery observation in March 1931.[13]

    Physical characteristics

    Halleria is an assumed carbonaceous C-type asteroid,[3] which agrees with the overall spectral type for members of the Charis family.[14]:23

    Rotation period

    Between 2005 and 2011, three rotational lightcurves of Halleria were obtained from photometric observations by Donald Pray, René Roy, and Pierre Antonini (U=3/3-/3).[11][lower-alpha 1] Lightcurve analysis gave a consolidated rotation period of 6.028 hours with a brightness amplitude between 0.14 and 0.17 magnitude.[3]

    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, Halleria measures between 39.33 and 50.046 kilometers in diameter and its surface has an albedo between 0.0338 and 0.05.[5][6][7][8][9][10]

    The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0415 and a diameter of 43.13 kilometers based on an absolute magnitude of 10.9.[3]

    Naming

    This minor planet was named for Albrecht von Haller (1708–1777) a Swiss physician, botanist and poet. The naming took place during the 1935 meeting of the Astronomische Gesellschaft in Bern, Switzerland. The author of the Dictionary of Minor Planet Names learned about the naming circumstances from Dutch astronomer Ingrid van Houten-Groeneveld.[2]

    Notes
    1. Pray (2011): rotation period 6.013 hours with a brightness amplitude of 0.14 mag. Quality code of 3. Summary figures for (1308) Halleria at the LCDB

    References
    1. "JPL Small-Body Database Browser: 1308 Halleria (1931 EB)" (2017-11-25 last obs.). Jet Propulsion Laboratory. Retrieved 20 December 2017.
    2. Schmadel, Lutz D. (2007). "(1308) Halleria". Dictionary of Minor Planet Names – (1308) Halleria. Springer Berlin Heidelberg. p. 107. doi:10.1007/978-3-540-29925-7_1309. ISBN 978-3-540-00238-3.
    3. "LCDB Data for (1308) Halleria". Asteroid Lightcurve Database (LCDB). Retrieved 20 December 2017.
    4. "Asteroid 1308 Halleria – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
    5. 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 20 December 2017.
    6. 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. Retrieved 20 December 2017.
    7. Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. 12: IRAS-A-FPA-3-RDR-IMPS-V6.0. Bibcode:2004PDSS...12.....T. Retrieved 22 October 2019.
    8. 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 17 October 2019. (online, AcuA catalog p. 153)
    9. 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.
    10. 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.
    11. Behrend, Raoul. "Asteroids and comets rotation curves – (1308) Halleria". Geneva Observatory. Retrieved 20 December 2017.
    12. 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. Retrieved 20 December 2017.
    13. "1308 Halleria (1931 EB)". Minor Planet Center. Retrieved 20 December 2017.
    14. 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 9780816532131.

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