1626 Sadeya

1626 Sadeya
Discovery [1]
Discovered by J. Comas Solà
Discovery site Fabra Observatory
Discovery date 10 January 1927
Designations
MPC designation 1626 Sadeya
Named after
 Spanish and American Astronomical Society [2]
1927 AA · 1956 AA
main-belt · Phocaea [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc 88.44 yr (32,303 days)
Aphelion 3.0119 AU
Perihelion 1.7150 AU
2.3634 AU
Eccentricity 0.2743
3.63 yr (1,327 days)
154.17°
Inclination 25.291°
279.54°
148.83°
Physical characteristics
Dimensions 14.77±0.19 km[4]
15.14±0.49 km[5]
16.70 km (calculated)[3]
3.420 h[6][7][8]
3.438±0.009 h[9]
3.414±0.005 h[10]
3.42048±0.00005 h[7]
3.419±0.001 h[11]
0.512±0.016[4]
0.486±0.067[5]
0.23 (assumed)[3]
S [3]
11.1

    1626 Sadeya, provisional designation 1927 AA, is an eccentric, stony asteroid with a tilted orbit from the inner regions of the asteroid belt. It was discovered on 10 January 1927 at Fabra Observatory in Barcelona by Spanish astronomer of Catalan origin, Josep Comas i Solà.[12]

    The asteroid is a member of the Phocaea family and measures about 15 kilometers in diameter. It orbits the Sun at a distance of 1.7–3.0 AU once every 3.63 years (1,327 days). Its orbit shows a high eccentricity of 0.27 and is heavily tilted by 25 degrees towards the plane of the ecliptic. It has a rotation period of 3.42 hours.[6][7][8] While observations by the space-based Akari and WISE/NEOWISE mission found an exceptionally high albedo of about 0.50 for the S-type asteroid, the Lightcurve Database project assumes a much lower value of 0.23.[3]

    The minor planet was named after the Spanish and American Astronomical Society (Spanish: Sociedad Astrónomica de España y América), also known by its acronym "Sadeya". It was founded by Comas i Solà, who also was its first president.[2]

    References

    1. 1 2 "JPL Small-Body Database Browser: 1626 Sadeya (1927 AA)" (2015-08-15 last obs.). Jet Propulsion Laboratory. Retrieved November 2015.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1626) Sadeya. Springer Berlin Heidelberg. p. 129. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 4 5 "LCDB Data for (1626) Sadeya". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; 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 November 2015.
    5. 1 2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters 759 (1): 5. arXiv:1209.5794. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved November 2015.
    6. 1 2 Oey, Julian; Krajewski, Ric (June 2008). "Lightcurve Analysis of Asteroids from Kingsgrove and Other Collaborating Observatories in the First Half of 2007". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 35 (2): 47–48. Bibcode:2008MPBu...35...47O. ISSN 1052-8091. Retrieved November 2015.
    7. 1 2 3 Behrend, Raoul. "Asteroids and comets rotation curves – (1626) Sadeya". Geneva Observatory. Retrieved November 2015.
    8. 1 2 Warner, Brian D. (July 2014). "Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 January-March". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 41 (3): 144–155. Bibcode:2014MPBu...41..144W. ISSN 1052-8091. Retrieved November 2015.
    9. ↑ Florczak, M.; Dotto, E.; Barucci, M. A.; Birlan, M.; Erikson, A.; et al. (November 1997). "Rotational properties of main belt asteroids: photoelectric and CCD observations of 15 objects". Planetary and Space Science 45 (11): 1423–1435. Bibcode:1997P&SS...45.1423F. doi:10.1016/S0032-0633(97)00121-9. Retrieved November 2015.
    10. ↑ Warner, Brian D. (April 2010). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2009 September-December". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 37 (2): 57–64. Bibcode:2010MPBu...37...57W. ISSN 1052-8091. Retrieved November 2015.
    11. ↑ Benishek, Vladimir (January 2015). "Rotation Period Determinations for 1095 Tulipa, 1626 Sadeya 2132 Zhukov, and 7173 Sepkoski". Bulletin of the Minor Planets (Section of the Association of Lunar and Planetary Observers) 42 (1): 75–76. Bibcode:2015MPBu...42...75B. ISSN 1052-8091. Retrieved November 2015.
    12. ↑ "1626 Sadeya (1927 AA)". Minor Planet Center. Retrieved November 2015.

    External links


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