256 Walpurga
{{Short description|Main belt asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet=yes
| background=#D6D6D6
| name=256 Walpurga
| discoverer=Johann Palisa
| discovered=3 April 1886
| mpc_name=(256) Walpurga
| alt_names=A886 GA, 1951 VJ
| named_after=Saint Walpurga
| pronounced={{IPAc-en|v|æ|l|'|p|ɜːr|g|ə}}
| mp_category=Main belt
| epoch=31 July 2016 (JD 2457600.5)
| semimajor={{Convert|2.99972|AU|Gm|abbr=on}}
| perihelion={{Convert|2.79984|AU|Gm|abbr=on}}
| aphelion={{Convert|3.19960|AU|Gm|abbr=on|lk=on}}
| eccentricity=0.066634
| inclination=13.3281°
| asc_node=182.937°
| arg_peri=46.5713°
| mean_anomaly=352.098°
| dimensions={{val|63.34|2.7|ul=km}}
| mass=
| density=
| rotation={{Convert|16.664|h|d|abbr=on|lk=on}}
16.64 h
| spectral_type=
| abs_magnitude=9.9
| albedo={{val|0.0530|0.005}}
| mean_motion={{Deg2DMS|0.189707|sup=ms}} / day
| orbit_ref={{Cite web |url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=256;cad=1 |title=256 Walpurga |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=11 May 2016}}
| observation_arc=130.04 yr (47496 d)
| uncertainty=0
}}
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.
References
{{Reflist|refs=
|first1 = Heath
|last1 = Shipley
|first2 = Alex
|last2 = Dillard
|first3 = Jordan
|last3 = Kendall
|first4 = Matthew
|last4 = Reichert
|first5 = Jason
|last5 = Sauppe
|first6 = Nelson
|last6 = Shaffer
|first7 = Thomas
|last7 = Kleeman
|first8 = Richard
|last8 = Ditteon
|display-authors = 1
|title = Asteroid Lightcurve Analysis at the Palmer Divide Observatory: September 2007
|work = The Minor Planet Bulletin
|volume = 35
|issue = 3
|pages = 99–101
|date = September 2008
|url = http://www.minorplanet.info/MPB/MPB_35-3.pdf
|accessdate = 2013-03-23
|postscript = .
|bibcode = 2008MPBu...35...99S
|url-status = dead
|archiveurl = https://web.archive.org/web/20130602215656/http://www.minorplanet.info/MPB/MPB_35-3.pdf
|archivedate = 2013-06-02
}}
}}
External links
- [http://ftp.lowell.edu/pub/elgb/astorb.html The Asteroid Orbital Elements Database]
- [http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html Minor Planet Discovery Circumstances]
- {{AstDys|256}}
- {{JPL small body}}
{{Minor planets navigator |255 Oppavia |number=256 |257 Silesia}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:000256}}
{{beltasteroid-stub}}