Astronomy:669 Kypria
.png) A three-dimensional model of 669 Kypria based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | August Kopff |
| Discovery site | Heidelberg |
| Discovery date | 20 August 1908 |
| Designations | |
| (669) Kypria | |
| Pronunciation | /ˈkɪpriə/[1] |
| 1908 DQ | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 110.22 yr (40258 d) |
| |{{{apsis}}}|helion}} | 3.2452 astronomical unit|AU (485.48 Gm) |
| |{{{apsis}}}|helion}} | 2.7840 AU (416.48 Gm) |
| 3.0146 AU (450.98 Gm) | |
| Eccentricity | 0.076496 |
| Orbital period | 5.23 yr (1911.8 d) |
| Mean anomaly | 277.943° |
| Mean motion | 0° 11m 17.88s / day |
| Inclination | 10.794° |
| Longitude of ascending node | 170.761° |
| 114.672° | |
| Physical characteristics | |
| Mean radius | 15.875±0.65 km |
| Rotation period | 14.283 h (0.5951 d) |
| Geometric albedo | 0.1405±0.012 |
| Absolute magnitude (H) | 10.24 |
669 Kypria is a minor planet orbiting the Sun that was discovered by German astronomer August Kopff on August 20, 1908. It is named after the lost Greek poem Cypria, which explained the causes of the Trojan War and served as a prequel to the Iliad.[3]
This body is a member of the dynamic Eos family of asteroids that most likely formed as the result of a collisional breakup of a parent body.[4] It is orbiting the Sun with a semimajor axis of 3.01 km and a low eccentricity of 0.076, causing it to vary in distance from 2.78 to 3.25 AU during each orbital period of 5.23 years. The orbital plane is inclined at an angle of 10.79° relative to the plane of the ecliptic.[2]
669 Kypria is classified as a stony S-type asteroid. infrared data yields a diameter estimate of 29.227±0.405 km.[2] Photometric data collected during 2007 was used to construct a lightcurve of this asteroid. It showed a synodic rotational period of 14.283±0.001 hours with a brightness variation of 0.60 in magnitude.[5]
References
- ↑ Cyprian (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=Cyprian (Subscription or UK public library membership required.)
- ↑ 2.0 2.1 2.2 Yeomans, Donald K., "669 Kypria", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=669, retrieved 5 May 2016.
- ↑ Schmadel, Lutz D. (2013), Dictionary of Minor Planet Names (3rd ed.), Springer Science & Business Media, p. 103, ISBN 978-3-662-06615-7, https://books.google.com/books?id=eHv1CAAAQBAJ&pg=PA103.
- ↑ Veeder, G. J. et al. (March 1995), "Eos, Koronis, and Maria family asteroids: Infrared (JHK) photometry", Icarus 114: pp. 186–196, doi:10.1006/icar.1995.1053, Bibcode: 1995Icar..114..186V, https://trs.jpl.nasa.gov/bitstream/2014/29296/1/95-0212.pdf.
- ↑ Bennefeld, Craig S.; Sada, Pedro V. (June 2008), "Lightcurve Analysis of 669 Kypria", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 35 (2): 87–88, Bibcode: 2008MPBu...35...87B.
External links
- 669 Kypria at AstDyS-2, Asteroids—Dynamic Site
- 669 Kypria at the JPL Small-Body Database
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