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{{Short description|Asteroid}}
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| name = 1854 Skvortsov
| background = #D6D6D6
| image = 001854-asteroid shape model (1854) Skvortsov.png
| image_scale =
| caption = Shape model of ''Skvortsov'' from its [[lightcurve]]
| discovery_ref = <ref name="jpldata" />
| discovered = 22 October 1968
| discoverer = [[Tamara Smirnova|T. Smirnova]]
| discovery_site = {{nowrap|[[Crimean Astrophysical Observatory|Crimean Astrophysical Obs.]]}}
| mpc_name = (1854) Skvortsov
| alt_names = {{mp|1968 UE|1}}{{·}}1962 HC 1964 VC{{·}}1964 XB
| named_after = [[Evgenii Fedorovich Skvortsov|Evgenii Skvortsov]] {{small|(astronomer)}}<ref name="springer" />
| mp_category = [[main-belt]]{{·}}{{small|([[Kirkwood gap|middle]])}}<ref name="lcdb" />
| orbit_ref = <ref name="jpldata" />
| epoch = 4 September 2017 ([[Julian day|JD]] 2458000.5)
| uncertainty = 0
| observation_arc = 54.75 yr (19,999 days)
| aphelion = 2.8909 [[Astronomical unit|AU]]
| perihelion = 2.1855 AU
| semimajor = 2.5382 AU
| eccentricity = 0.1390
| period = 4.04 [[Julian year (astronomy)|yr]] (1,477 days)
| mean_anomaly = 341.44[[Degree (angle)|°]]
| mean_motion = {{Deg2DMS|0.2437|sup=ms}} / day
| inclination = 4.8987°
| asc_node = 189.24°
| arg_peri = 274.19°
| dimensions = 8.97 km {{small|(calculated)}}<ref name="lcdb" /> {{val|9.602|0.095}} km<ref name="Masiero-2014" /> {{val|10.265|0.070}} km<ref name="WISE" />
| rotation = {{val|78.5|0.2}} [[Hour|h]]<ref name="Warner-2006l" />
| albedo = 0.20 {{small|(assumed)}}<ref name="lcdb" /> {{val|0.2031|0.0640}}<ref name="WISE" /> {{val|0.252|0.053}}<ref name="Masiero-2014" />
| spectral_type = [[S-type asteroid|S]]<ref name="lcdb" />
| abs_magnitude = 12.3<ref name="WISE" />{{·}}12.6<ref name="jpldata" /><ref name="lcdb" />
}}

'''1854 Skvortsov''' ([[Minor planet provisional designation|''prov. designation'']]: {{mp|1968 UE|1}}) is a stony [[background asteroid]] and relatively [[List of slow rotators (minor planets)|slow rotator]] from the middle region of the [[asteroid belt]], approximately 9 kilometers in diameter. It was discovered on 22 October 1968, by Russian astronomer [[Tamara Smirnova]] at the [[Crimean Astrophysical Observatory]] in Nauchnyj on the Crimean peninsula.<ref name="MPC-Skvortsov" /> It is named after astronomer [[Evgenii Fedorovich Skvortsov|Evgenii Skvortsov]].<ref name="springer" />

== Orbit and classification ==

The asteroid orbits the Sun in the [[Kirkwood gap|central]] main-belt at a distance of 2.2–2.9 [[Astronomical unit|AU]] once every 4.04 years (1,477 days). Its orbit has an [[orbital eccentricity|eccentricity]] of 0.14 and an [[orbital inclination|inclination]] of 5[[Degree (angle)|°]] with respect to the [[ecliptic]].<ref name="jpldata" /> ''Skvortsov'' was first observed at [[Goethe Link Observatory]] in 1962, when it was identified as {{mp|1962 HC}}, extending the body's [[observation arc]] by 6 years prior to its official discovery observation.<ref name="MPC-Skvortsov" />

== Naming ==

This [[minor planet]] was named in honor of [[Evgenii Fedorovich Skvortsov|Evgenii Skvortsov]] (1882–1952), an instructor of astronomy in the Simferopol Pedagogical Institute, an active observer of minor planets at the Crimean [[Simeiz Observatory]], and the discoverer of several minor planets, including [[1149 Volga]], [[1167 Dubiago]] and [[1381 Danubia]].<ref name="springer" /> The official {{MoMP|1854|naming citation}} was published by the [[Minor Planet Center]] on 1 June 1975 ({{small|[[Minor Planet Circulars|M.P.C.]] 3825}}).<ref name="DoMP-Circular-dates" />

== Physical characteristics ==

=== Rotation period ===

In March 2006, a rotational [[lightcurve]] for ''Skvortsov'' was obtained from photometric observations made by American astronomer [[Brian D. Warner]] at his Palmer Divide Observatory in Colorado. It gave a [[rotation period]] of 78.5 hours with a brightness variation of 0.56 [[Magnitude (astronomy)|magnitude]] ({{small|[[LCDB quality code|U=2]]}}).<ref name="Warner-2006l" /> This is a rather slow rotation rate compared to the [[Slow rotator (asteroid)|average asteroid spin of 2–20 hours]].

=== Diameter and albedo ===

According to the survey carried out by NASA's [[Wide-field Infrared Survey Explorer]] with its subsequent [[NEOWISE]] mission, ''Skvortsov'' measures between 9.60 and 10.27 kilometers in diameter, and its surface has an [[astronomical albedo|albedo]] of 0.203 to 0.252.<ref name="Masiero-2014" /><ref name="WISE" /> The ''Collaborative Asteroid Lightcurve Link'' assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.97 kilometers with an [[absolute magnitude]] of 12.6.<ref name="lcdb" />

== References ==
{{reflist|30em|refs=

<ref name="jpldata">{{cite web
|type = 2017-01-27 last obs.
|title = JPL Small-Body Database Browser: 1854 Skvortsov (1968 UE1)
|url = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001854
|publisher = [[Jet Propulsion Laboratory]]
|accessdate = 8 June 2017}}</ref>

<ref name="springer">{{cite book
|title = Dictionary of Minor Planet Names – (1854) Skvortsov
|last = Schmadel | first = Lutz D.
|publisher = [[Springer Berlin Heidelberg]]
|page = 149
|date = 2007
|isbn = 978-3-540-00238-3
|doi = 10.1007/978-3-540-29925-7_1855 |chapter = (1854) Skvortsov }}</ref>

<ref name="MPC-Skvortsov">{{cite web
|title = 1854 Skvortsov (1968 UE1)
|work = Minor Planet Center
|url = https://www.minorplanetcenter.net/db_search/show_object?object_id=1854
|accessdate = 13 December 2016}}</ref>

<ref name="DoMP-Circular-dates">{{cite book
|title = Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008)
|year = 2009
|url = https://archive.org/details/dictionaryminorp2008schm
|url-access = limited
|chapter = Appendix – Publication Dates of the MPCs
|last = Schmadel |first=Lutz D.
|publisher = Springer Berlin Heidelberg
|page = [https://archive.org/details/dictionaryminorp2008schm/page/n230 221]
|isbn = 978-3-642-01964-7
|doi = 10.1007/978-3-642-01965-4}}</ref>

<ref name="lcdb">{{cite web
|title = LCDB Data for (1854) Skvortsov
|publisher = Asteroid Lightcurve Database (LCDB)
|url = http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1854%7CSkvortsov
|accessdate = 13 December 2016}}</ref>

<ref name="WISE">{{cite journal
|display-authors = 6
|first1 = A. |last1 = Mainzer
|first2 = T. |last2 = Grav
|first3 = J. |last3 = Masiero
|first4 = E. |last4 = Hand
|first5 = J. |last5 = Bauer
|first6 = D. |last6 = Tholen
|first7 = R. S. |last7 = McMillan
|first8 = T. |last8 = Spahr
|first9 = R. M. |last9 = Cutri
|first10 = E. |last10 = Wright
|first11 = J. |last11 = Watkins
|first12 = W. |last12 = Mo
|first13 = C. |last13 = Maleszewski
|date = November 2011
|title = NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results
|journal = The Astrophysical Journal
|volume = 741
|issue = 2
|page = 25
|bibcode = 2011ApJ...741...90M
|doi = 10.1088/0004-637X/741/2/90
|arxiv = 1109.6407}}</ref>

<ref name="Warner-2006l">{{Cite journal
|author = Warner, Brian D.
|date = December 2006
|title = Asteroid lightcurve analysis at the Palmer Divide Observatory - February - March 2006
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2006MPBu...33...82W
|journal = The Minor Planet Bulletin
|volume = 33
|issue = 4
|pages = 82–84
|issn = 1052-8091
|bibcode = 2006MPBu...33...82W
|access-date= 13 December 2016}}</ref>

<ref name="Masiero-2014">{{cite journal
|display-authors = 6
|first1 = Joseph R. |last1 = Masiero
|first2 = T. |last2 = Grav
|first3 = A. K. |last3 = Mainzer
|first4 = C. R. |last4 = Nugent
|first5 = J. M. |last5 = Bauer
|first6 = R. |last6 = Stevenson
|first7 = S. |last7 = Sonnett
|date = August 2014
|title = Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos
|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M
|journal = The Astrophysical Journal
|volume = 791
|issue = 2
|page = 11
|bibcode = 2014ApJ...791..121M
|doi = 10.1088/0004-637X/791/2/121
|arxiv = 1406.6645
|access-date= 13 December 2016}}</ref>

}} 

== External links ==
* [http://www.minorplanetobserver.com/pdolc/A1854_2006.HTM Lightcurve plot of 1854 Skvortsov], Palmer Divide Observatory, ''[[Brian D. Warner|B. D. Warner]]'' (2006)
* [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|1854}}
* {{JPL small body}}

{{Minor planets navigator |1853 McElroy |number=1854 |1855 Korolev}}
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{{DEFAULTSORT:Skvortsov}}
[[Category:Background asteroids|001854]]
[[Category:Discoveries by Tamara Mikhaylovna Smirnova]]
[[Category:Named minor planets]]
[[Category:Astronomical objects discovered in 1968|19681022]]

1854 Skvortsov - Revision history

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