Astronomy:256 Walpurga
From HandWiki
 Lightcurve-base 3D-model of 256 Walpurga. | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 3 April 1886 |
| Designations | |
| (256) Walpurga | |
| Pronunciation | /vælˈpɜːrɡə/ |
| Named after | Saint Walpurga |
| A886 GA, 1951 VJ | |
| Minor planet category | Main belt |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 130.04 yr (47496 d) |
| |{{{apsis}}}|helion}} | 3.19960 astronomical unit|AU (478.653 Gm) |
| |{{{apsis}}}|helion}} | 2.79984 AU (418.850 Gm) |
| 2.99972 AU (448.752 Gm) | |
| Eccentricity | 0.066634 |
| Orbital period | 5.20 yr (1897.7 d) |
| Mean anomaly | 352.098° |
| Mean motion | 0° 11m 22.945s / day |
| Inclination | 13.3281° |
| Longitude of ascending node | 182.937° |
| 46.5713° | |
| Physical characteristics | |
| Dimensions | 63.34±2.7 km |
| Rotation period | 16.664 h (0.6943 d)[1] 16.64 h[2] |
| Geometric albedo | 0.0530±0.005 |
| Absolute magnitude (H) | 9.9 |
256 Walpurga is a large Main belt asteroid. It was discovered by Johann Palisa on 3 April 1886 in Vienna and was named after Saint Walburga.
Photometric observations at the Oakley Observatory in Terre Haute, Indiana, during 2007 were used to build a light curve for this asteroid. The asteroid displayed a rotation period of 16.64 ± 0.02 hours and a brightness variation of 0.38 ± 0.02 in magnitude.[2]
References
- ↑ 1.0 1.1 "256 Walpurga". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=256;cad=1.
- ↑ 2.0 2.1 Shipley, Heath et al. (September 2008), "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: September 2007", The Minor Planet Bulletin 35 (3): pp. 99–101, Bibcode: 2008MPBu...35...99S, archived from the original on 2013-06-02, https://web.archive.org/web/20130602215656/http://www.minorplanet.info/MPB/MPB_35-3.pdf, retrieved 2013-03-23.
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- 256 Walpurga at AstDyS-2, Asteroids—Dynamic Site
- 256 Walpurga at the JPL Small-Body Database
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