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{{Short description|Main-belt asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| background = #D6D6D6
| name = 798 Ruth
| mpc_name = (798) Ruth
| alt_names = 1914 VT
| pronounced = {{IPAc-en|'|r|uː|θ}}<ref>Noah Webster (1884) ''A Practical Dictionary of the English Language''</ref>
| discoverer = [[Max Wolf]]
| discovered = 21 November 1914
| discovery_site = [[Heidelberg Observatory]]
| orbit_ref = <ref name="JPL"/>
| epoch = 31 July 2016 ([[Julian day|JD]] 2457600.5)
| eccentricity = 0.035951
| semimajor= {{Convert|3.0146|AU|Gm|abbr=on}}▼
|
|
| period = {{Convert|1911.655892417203|days|years|2|adj=ri1|order=flip|lk=on|abbr=on}}
|
|
| arg_peri = 41.817°
| mean_anomaly = 327.100[[Degree (angle)|°]]
| mean_motion = {{Deg2DMS|0.18830|sup=ms}} / day
| observation_arc = 135.93 yr (49647 d)
| uncertainty = 0
| abs_magnitude = 9.5
| rotation = {{Convert|8.550|h|d|abbr=on|lk=on}}
|
| mean_radius = {{val|21.595|1.45|u=km}}
| dimensions = <!--(Uni/bi/tri-axial dimensions)-->
| mass =
| escape_velocity =
| sidereal_day =
| axial_tilt =
| spectral_type = [[M-type asteroid|M]]<ref name=Sanchez_et_al_2014/>
| single_temperature =
}}
'''798 Ruth''' is a [[minor planet]] orbiting the [[Sun]] that was discovered by the German astronomer [[Max Wolf]] on
This is a member of the dynamic [[Eos family]] of asteroids that most likely formed as the result of a collisional breakup of a parent body.<ref name="Veeder1995"/> It is an [[M-type asteroid|M-type (metallic) asteroid]] that displays a significant component of the mineral [[olivine]] in its [[Electromagnetic spectrum|spectrum]].<ref name=Sanchez_et_al_2014/> 798 Ruth spans {{val|43.19|2.9|u=km}} and rotates on its axis once every {{val|8.55|u=hours}}.<ref name="JPL"/>
==References==
{{Reflist|refs=
<ref name="JPL">{{Citation
| first1 = Donald K.
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| work = JPL Small-Body Database Browser
| publisher = [[NASA Jet Propulsion Laboratory]]
| url =
| archive-url = https://web.archive.org/web/20140815034026/http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=798
| accessdate= 4 May 2016▼
| url-status = dead
| archive-date = 15 August 2014
| postscript= .
}}</ref>
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| display-authors = 1
| title = Eos, Koronis, and Maria family asteroids: Infrared (JHK) photometry
|
| volume = 114
| pages = 186–196
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| citeseerx = 10.1.1.31.2739
| postscript= .
| url= https://trs.jpl.nasa.gov/bitstream/2014/29296/1/95-0212.pdf
}}</ref>
<ref name=Sanchez_et_al_2014>{{citation
| title=Olivine-dominated asteroids: Mineralogy and origin
| last1=Sanchez | first1=Juan A. | last2=Reddy | first2=Vishnu
| last3=Kelley | first3=Michael S. | last4=Cloutis | first4=Edward A.
| last5=Bottke | first5=William F. | last6=Nesvorný | first6=David
| last7=Lucas | first7=Michael P. | last8=Hardersen | first8=Paul S.
| last9=Gaffey | first9=Michael J. | last10=Abell | first10=Paul A.
| last11=Le Corre | first11=Lucille | display-authors=1
| journal=Icarus | postscript=.
| volume=228 | pages=288–300 | date=January 2014
| doi=10.1016/j.icarus.2013.10.006 | arxiv=1310.1080
| bibcode=2014Icar..228..288S }}</ref>
<ref name=Schmadel2012>{{citation
| title=Dictionary of Minor Planet Names
| first=Lutz D. | last=Schmadel | date=2012
| page=73 | isbn=9783642297182 | postscript=.
| publisher=Springer Berlin Heidelberg
| url=https://books.google.com/books?id=aeAg1X7afOoC&pg=PA73 }}</ref>
}} <!-- end of reflist -->
== External links ==
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{{Minor planets navigator |797 Montana |number=798 |799 Gudula}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:Ruth}}
[[Category:Eos asteroids|000798]]
[[Category:Discoveries by Max Wolf]]
[[Category:Named minor planets]]
[[Category:M-type asteroids (Tholen)|000798]]
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