(18349) Dafydd
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Asteroid (18349) Dafydd |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Major semi-axis | 2.8890 AU |
| eccentricity | 0.2315 |
| Perihelion - aphelion | 2.2201 AU - 3.5578 AU |
| Inclination of the orbit plane | 16.3580 ° |
| Length of the ascending node | 281.9302 ° |
| Argument of the periapsis | 70.0062 ° |
| Sidereal period | 4.91 a |
| Physical Properties | |
| Absolute brightness | 13.6 mag |
| history | |
| Explorer | Henry E. Holt |
| Date of discovery | July 25, 1990 |
| Another name | 1990 OV 4 , 1996 XO 5 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(18349) Dafydd is a main outer belt asteroid discovered on July 25, 1990 by the American astronomer Henry E. Holt at the Palomar Observatory ( IAU code 675) in California .
The asteroid was named on February 9, 2009 after Dafydd ap Llywelyn , a prince from the Gwynedd kingdom in the 13th century. Exactly 750 years to the day before the asteroid was discovered, Dafydd reformed Welsh law. A Welsh committee had proposed the name after Dafydd ap Llywelyn.
See also
Web links
- (18349) Dafydd in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (18349) Dafydd in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances by (18349) Dafydd according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ Welsh prince Dafydd is honored with own asteroid . Article in the North Wales Daily Post, April 6, 2009