1237 Geneviève

1237 Geneviève (prov. designation: 1931 XB) is a background asteroid from the central region of the asteroid belt, approximately 38 kilometers (24 miles) in diameter. It was discovered on 2 December 1931, by French astronomer Guy Reiss at the Algerian Algiers Observatory in North Africa.[3] The discoverer named it after his daughter Geneviève Reiss.[2]

1237 Geneviève
Shape model of Geneviève from its lightcurve
Discovery [1]
Discovered byG. Reiss
Discovery siteAlgiers Obs.
Discovery date2 December 1931
Designations
(1237) Geneviève
Named after
Geneviève Reiss
(daughter of discoverer)[2]
1931 XB · 1929 GA
1984 MM · A908 HA
Orbital characteristics [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc109.09 yr (39,846 days)
Aphelion2.8142 AU
Perihelion2.4107 AU
2.6125 AU
Eccentricity0.0772
4.22 yr (1,542 days)
169.28°
0° 14m 0.24s / day
Inclination9.7349°
57.868°
305.88°
Physical characteristics
Dimensions30.85±6.64 km[6]
37.26±11.83 km[7]
39.74 km (derived)[8]
39.81±1.1 km (IRAS:20)[9]
40.67±0.61 km[10]
42.987±4.138 km[11]
16.37±0.10 h[12]
24.82±0.07 h[13]
0.0413±0.0070[11]
0.0484 (derived)[8]
0.057±0.002[10]
0.0585±0.003 (IRAS:20)[9]
0.06±0.04[7]
0.07±0.14[6]
S/C [8]
B–V = 0.610[1]
U–B = 0.250[1]
10.7[7][9][10] · 10.8[1] · 10.84[6] · 10.91[8][11][12]

    Orbit and classification

    Geneviève is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[4][5] It orbits the Sun in the central main-belt at a distance of 2.4–2.8 AU once every 4 years and 3 months (1,542 days). Its orbit has an eccentricity of 0.08 and an inclination of 10° with respect to the ecliptic.[1]

    In 1908, it was first identified as A908 HA at Taunton Observatory (803). A few days later, Geneviève was also observed at the U.S. Naval Observatory, which extended the body's observation arc by 23 years prior to its official discovery observation at Algiers.[3]

    Naming

    This minor planet was named for the eldest daughter of the discoverer, Geneviève Reiss. The discoverer also named 1300 Marcelle and 1376 Michelle after his other two daughters. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 114).[2]

    Physical characteristics

    In May 1984, American astronomer Richard Binzel obtained a rotational lightcurve of Geneviève that gave a rotation period of 16.37 hours with a brightness variation of 0.23 magnitude (U=2).[12] A divergent period of 24.82 hours with an amplitude of 0.07 magnitude was obtained from photometric observations by astronomer Raymond Poncy in April 2005 (U=2-).[13]

    Physical characteristics

    According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Geneviève measures between 30.85 and 40.67 kilometers in diameter, and its surface has an albedo between 0.057 and 0.07 (without preliminary results).[9][10][11]

    The Collaborative Asteroid Lightcurve Link (CALL) agrees with the results obtained by IRAS, and derives an albedo of 0.0484 and a diameter of 39.74 kilometers using an absolute magnitude of 10.91.[8]

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    References
    1. "JPL Small-Body Database Browser: 1237 Genevieve (1931 XB)" (2017-06-04 last obs.). Jet Propulsion Laboratory. Retrieved 26 July 2017.
    2. Schmadel, Lutz D. (2007). "(1237) Geneviève". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. p. 103. doi:10.1007/978-3-540-29925-7_1238. ISBN 978-3-540-00238-3.
    3. "1237 Genevieve (1931 XB)". Minor Planet Center. Retrieved 25 January 2017.
    4. "Asteroid 1237 Genevieve – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 15 March 2020.
    5. "Asteroid 1237 Genevieve". Small Bodies Data Ferret. Retrieved 15 March 2020.
    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 25 January 2017.
    7. 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 25 January 2017.
    8. "LCDB Data for (1237) Geneviève". Asteroid Lightcurve Database (LCDB). Retrieved 25 January 2017.
    9. 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.
    10. 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)
    11. 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.
    12. Binzel, R. P. (October 1987). "A photoelectric survey of 130 asteroids". Icarus. 72 (1): 135–208. Bibcode:1987Icar...72..135B. doi:10.1016/0019-1035(87)90125-4. ISSN 0019-1035. Retrieved 25 January 2017.
    13. Behrend, Raoul. "Asteroids and comets rotation curves – (1237) Geneviève". Geneva Observatory. Retrieved 25 January 2017.
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