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{{Short description|Main-belt asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| background = #D6D6D6
| name = 80 Sappho
| symbol = [[File:Double Venus symbol (bold).svg|24px]] (astrological)
| image = 80 Sappho.png
| image_scale =
| caption = [[Lightcurve]]-based 3D-model of ''Sappho'' on the top and the image on the bottom.
| discoverer = [[Norman Robert Pogson|N. R. Pogson]]
| discovery_site = [[Madras Observatory|Madras Obs.]]
| discovered = 2 May 1864
| mpc_name = (80) Sappho
| pronounced = {{IPAc-en|ˈ|s|æ|f|oʊ}}<ref>{{OED|Sappho}}</ref>
| adjective = Sapphonian {{IPAc-en|s|æ|ˈ|f|oʊ|n|i|ə|n}}<ref>Catherine Hobbs (1995) ''Nineteenth-century Women Learn to Write''</ref><br />Sapphoian {{IPAc-en|s|æ|ˈ|f|oʊ|.|i|ə|n}}<ref>''The Thistle'', January 1903, vol. I, no. 2, p. 4</ref>
| named_after = [[Sappho]] {{small|(Greek poet)}}
| mp_category = [[main-belt]]{{·}}{{small|([[Kirkwood gap|inner]])}}
| orbit_ref = <ref name="JPL"/>
| uncertainty = 0
| epoch = 4 September 2017 ([[Julian day|JD]] 2458000.5)
| aphelion = {{Convert|2.7544|AU|Gm|abbr=on|lk=on}}
| perihelion = {{Convert|1.8370|AU|Gm|abbr=on}}
| semimajor = {{Convert|2.2957|AU|Gm|abbr=on}}
| eccentricity = 0.19980
| period = 3.48 [[Julian year (astronomy)|yr]] (1270.5 [[Julian year (astronomy)|d]])
| inclination = 8.676°
| mean_anomaly = 287.260°
| mean_motion = {{Deg2DMS|0.28335|sup=ms}} / day
| asc_node = 218.699°
| arg_peri = 139.662°
| moid = {{Convert|0.843652|AU|Gm|abbr=on}}
| jupiter_moid = {{Convert|2.7319|AU|Gm|abbr=on}}
| tisserand = 3.553
| pole_ecliptic_lat = 194°<ref name=Hanus2013/>
| pole_ecliptic_lon = −26°<ref name=Hanus2013/>
| physical_ref = <ref name="JPL"/>
| mean_diameter = {{val|68.563|1.033|ul=km}}
| mass = (4.6 ± 2.11/0.86){{e|17}} kg<ref name="FiengaEtAl2020"/>
| density = 3.055 ± 1.400/0.569 g/cm<sup>3</sup><ref name="FiengaEtAl2020"/>{{efn|Assuming a diameter of 66 ± 8 km.}}
| rotation = 14.03087<ref name=Hanus2013/> h
| albedo = {{val|0.206|0.014}}<ref name="JPL"/> <br/> 0.185 <ref>{{Cite web |url=http://www.psi.edu/pds/resource/albedo.html |title=Asteroid Data Sets |access-date=13 January 2007 |archive-date=17 December 2009 |archive-url=https://web.archive.org/web/20091217104722/http://www.psi.edu/pds/resource/albedo.html |url-status=dead }}</ref>
| spectral_type = [[S-type asteroid]]
| abs_magnitude = 7.98
| magnitude = 9.38 to 13.6
}}

'''80 Sappho''' (symbol: [[File:Double Venus symbol.svg|16x16px]]) is a large, [[S-type asteroid|S-type]] (stony) [[main-belt]] [[asteroid]]. It was discovered by English astronomer [[Norman Robert Pogson|Norman Pogson]] on 2 May 1864, and is named after [[Sappho]], the [[Archaic Greece]] [[poet]]. The asteroid is orbiting the [[Sun]] at a distance of {{val|2.2957|ul=AU}} with a [[orbital period|period]] of 3.48 years and an [[orbital eccentricity|eccentricity]] (ovalness) of 0.2. The [[orbital plane]] is inclined at an angle of 8.68° to the [[plane of the ecliptic]].<ref name="JPL"/>

13-cm radar observations of this asteroid from the [[Arecibo Observatory]] between 1980 and 1985 were used to produce a diameter estimate of {{convert|83|km|mi}}.<ref name="Ostro1985"/> Hanuš et al. (2013) confirmed the polar axis has [[ecliptic coordinates]] {{nowrap|(λ, β)}} = {{nowrap|(194°, −26°)}} and listed a [[rotation period]] of 14.03087 h.<ref name=Hanus2013/>

Sappho (at [[apparent magnitude]] 11.8) [[Occultation|occulted]] the magnitude 7.2 star HIP 24403 in the [[constellation]] of [[Taurus (constellation)|Taurus]] on 16 September 2018 at 8:54 UT.<ref name=HIP24403/><ref>{{cite web |url=http://www.asteroidoccultation.com/2018_09/0916_80_56486.htm |url-status=dead |archive-url=https://web.archive.org/web/20170915133027/http://www.asteroidoccultation.com/2018_09/0916_80_56486.htm |archive-date=15 September 2017 |title=(80) Sappho / HIP 24403 event on 2018 Sep 16, 08:54 UT}}</ref> Sacramento and Salt Lake City were the two major cities located underneath the shadow path. Data from this event will help improve the shape model of the asteroid. During the occultation the asteroid was roughly {{cvt|1.6|AU|km mi|abbr=on}} from Earth with an uncertainty of ±76 km.

== Notes ==
{{notelist}}

== References ==
{{Reflist|refs=

<ref name="JPL">{{Citation
| title = 80 Sappho
| work = JPL Small-Body Database Browser
| publisher = [[NASA Jet Propulsion Laboratory]]
| url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=80
| archive-url = https://web.archive.org/web/20140922131620/http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=80
| url-status = dead
| archive-date = 2014-09-22
| access-date= 2013-03-30
| postscript= .}}</ref>

<ref name=Hanus2013>{{citation
| title=Sizes of main-belt asteroids by combining shape models and Keck adaptive optics observations
| display-authors=1 | last1=Hanuš | first1=J.
| last2=Marchis | first2=F. | last3=Ďurech | first3=J.
| journal=Icarus | volume=226 | issue=1
| pages=1045–1057 | date=September 2013
| doi=10.1016/j.icarus.2013.07.023
| bibcode=2013Icar..226.1045H | postscript=. | arxiv=1308.0446| s2cid=118710558 }}</ref>

<ref name="Ostro1985">{{Citation
| last1 = Ostro
| first1 = S. J.
| last2 = Campbell
| first2 = D. B.
| last3 = Shapiro
| first3 = I. I.
| display-authors = 1
| title = Mainbelt asteroids - Dual-polarization radar observations
| journal = Science
| volume = 229
| pages = 442–446
|date=August 1985
| doi = 10.1126/science.229.4712.442
| bibcode = 1985Sci...229..442O
| postscript= .
| pmid=17738665
| issue=4712| s2cid = 38234273
}}</ref>

<ref name=HIP24403>{{Cite web |url=http://www.poyntsource.com/New/Google/20180916_56486.HTM |title=Interactive GoogleMap of Shadow Path |access-date=2018-02-21 |archive-url=https://archive.today/20180221142956/http://www.poyntsource.com/New/Google/20180916_56486.HTM |archive-date=21 February 2018 |url-status=dead }}</ref>

<ref name="FiengaEtAl2020">{{Cite journal
|last1=Fienga |first1=A.
|last2=Avdellidou |first2=C.
|last3=Hanuš |first3=J.
|date=February 2020
|title=Asteroid masses obtained with INPOP planetary ephemerides
|url=https://academic.oup.com/mnras/article/492/1/589/5658701
|journal=Monthly Notices of the Royal Astronomical Society
|volume=492
|issue=1
|pages=589–602
|doi=10.1093/mnras/stz3407
|doi-access=free}}</ref>

}} 

== External links ==
* Shape model for [https://space.frieger.com/asteroids/asteroids/80-Sappho 80 Sappho]
* {{AstDys|80}}
* {{JPL small body}}

{{Minor planets navigator |79 Eurynome |number=80 |81 Terpsichore}}
{{Small Solar System bodies}}
{{Authority control}}

{{DEFAULTSORT:000080}}
[[Category:Background asteroids]]
[[Category:Discoveries by N. R. Pogson|Sappho]]
[[Category:Named minor planets|Sappho]]
[[Category:S-type asteroids (Tholen)]]
[[Category:S-type asteroids (SMASS)]]
[[Category:Astronomical objects discovered in 1864|18640502]]

[[vec:Lista de asteroidi#80 Safo]]

80 Sappho - Revision history

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