840 Zenobia
{{Short description|Minor planet orbiting the sun, discovered by Max Wolf in 1916}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet= yes
| background= #D6D6D6
| name= 840 Zenobia
| mpc_name= (840) Zenobia
| alt_names= 1916 AK
| pronounced= {{IPAc-en|z|ɛ|'|n|oʊ|b|i|ə}}Noah Webster (1884) A Practical Dictionary of the English Language
| discoverer= Max Wolf
| discovered= 25 September 1916
| discovery_site= Heidelberg
| epoch= 31 July 2016 (JD 2457600.5)
| eccentricity= 0.099775
| semimajor= {{Convert|3.1322|AU|Gm|abbr=on}}
| perihelion= {{Convert|2.8197|AU|Gm|abbr=on}}
| aphelion= {{Convert|3.4448|AU|Gm|abbr=on|lk=on}}
| inclination= 9.9848°
| asc_node= 272.773°
| arg_peri= 10.358°
| mean_anomaly= 73.117°
| mean_motion= {{Deg2DMS|0.17780|sup=ms}} / day
| orbit_ref= {{Cite web |url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=840;cad=1 |title=840 Zenobia (1916 AK) |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=4 May 2016}}
| observation_arc= 99.23 yr (36243 d)
| uncertainty= 0
| abs_magnitude= 10.0
| rotation= {{Convert|5.565|h|d|abbr=on|lk=on}}
| moid= {{Convert|1.80367|AU|Gm|abbr=on}}
| jupiter_moid= {{Convert|1.68787|AU|Gm|abbr=on}}
| tisserand= 3.182
}}
840 Zenobia is a minor planet orbiting the Sun. It was discovered by German astronomer Max Wolf at Heidelberg on September 25, 1916. The origin of the name is uncertain, but it may be named after the Slavic god of the hunt.
Photometric observations of the asteroid during 2006 at the Palmer Divide Observatory in Colorado Springs, Colorado, were used to generate a light curve with a period of 5.565 ± 0.005 hours and a variation in brightness of 0.20 ± 0.02 magnitude.
References
{{reflist|refs=
| first1 = Lutz D.
| last1 = Schmadel
| title = Dictionary of Minor Planet Names
| publisher = Springer
| page = 77
| volume = 1
| date = 2003
| isbn = 3540002383
| url = https://books.google.com/books?id=VoJ5nUyIzCsC&pg=PA77
| postscript= .
}}
| last1 = Warner
| first1 = Brian D.
| title = Asteroid lightcurve analysis at the Palmer Divide Observatory - late 2005 and early 2006
| journal = The Minor Planet Bulletin
| volume = 33
| pages = 58–62
|date=September 2006
| bibcode = 2006MPBu...33...58W
| postscript = .
}}
}}
External links
- [http://www.minorplanetobserver.com/pdolc/A840_2005.HTM Lightcurve plot of 840 Zenobia], Palmer Divide Observatory, B. D. Warner (2005)
- [http://www.minorplanet.info/PHP/lcdbsummaryquery.php Asteroid Lightcurve Database (LCDB)], query form ([http://www.minorplanet.info/lightcurvedatabase.html info] {{Webarchive|url=https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html |date=16 December 2017 }})
- [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
- [http://obswww.unige.ch/~behrend/page_cou.html Asteroids and comets rotation curves, CdR] – Observatoire de Genève, Raoul Behrend
- [https://www.minorplanetcenter.net/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000)] – Minor Planet Center
- {{AstDys|840}}
- {{JPL small body}}
{{Minor planets navigator |839 Valborg |number=840 |841 Arabella}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Zenobia}}
Category:Discoveries by Max Wolf
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