Astronomy:714 Ulula
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.png) A three-dimensional model of 714 Ulula based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | J. Helffrich |
| Discovery site | Heidelberg Obs. |
| Discovery date | 18 May 1911 |
| Designations | |
| (714) Ulula | |
| Pronunciation | /ˈʌljʊlə/[1][2] |
| 1911 LW | |
| Orbital characteristics[3] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 104.92 yr (38323 d) |
| |{{{apsis}}}|helion}} | 2.6801 astronomical unit|AU (400.94 Gm) |
| |{{{apsis}}}|helion}} | 2.3892 AU (357.42 Gm) |
| 2.5347 AU (379.19 Gm) | |
| Eccentricity | 0.057381 |
| Orbital period | 4.04 yr (1474.0 d) |
| Mean anomaly | 128.475° |
| Mean motion | 0° 14m 39.264s / day |
| Inclination | 14.271° |
| Longitude of ascending node | 233.847° |
| 232.003° | |
| Physical characteristics | |
| Mean radius | 19.59±1.2 km |
| Rotation period | 6.998 h (0.2916 d) |
| Geometric albedo | 0.2711±0.037 |
| Absolute magnitude (H) | 9.1 |
714 Ulula is a main belt asteroid. It is orbiting the Sun near the 3:1 Kirkwood Gap[4] with a period of 4.04 years and an eccentricity of 0.057. It was discovered by German astronomer J. Helffrich on 18 May 1911 from the Heidelberg Observatory and was named after an order of owls.[5] The asteroid has a mean radius of 20 km and is spinning with a rotation period of seven hours. Its pole of rotation lies just 4–14° away from the plane of the ecliptic.[6] The surface spectrum shows a pyroxene chemistry and is consistent with mesosiderites/HED meteorites.[4]
References
- ↑ ululance (3rd ed.), Oxford University Press, September 2005, http://oed.com/search?searchType=dictionary&q=ululance (Subscription or UK public library membership required.)
"Ululant". Merriam-Webster Dictionary. https://www.merriam-webster.com/dictionary/ululant. - ↑ ulula
- ↑ "714 Ulula (1911 LW)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=714;cad=1.
- ↑ 4.0 4.1 Fieber-Beyer, S. K. et al. (March 2010), "Near-Infrared Spectroscopy of 3:1 Kirkwood Gap Asteroids 695 Bella, 714 Ulula, and 3066 McFadden", 41st Lunar and Planetary Science Conference, held March 1–5, 2010 in The Woodlands, Texas. LPI Contribution 1533: p. 1500, Bibcode: 2010LPI....41.1500F
- ↑ Schmadel, Lutz (August 5, 2003), Dictionary of minor planet names, 1, Springer, p. 69, ISBN 9783540002383, https://books.google.com/books?id=VoJ5nUyIzCsC&pg=PA69
- ↑ Marciniak, A. et al. (May 2011), "Photometry and models of selected main belt asteroids. VIII. Low-pole asteroids", Astronomy & Astrophysics 529: 14, doi:10.1051/0004-6361/201015365, A107, Bibcode: 2011A&A...529A.107M
External links
- 714 Ulula at AstDyS-2, Asteroids—Dynamic Site
- 714 Ulula at the JPL Small-Body Database
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