4954 Eric
{{Use dmy dates|date=October 2019}}
{{Infobox planet
| minorplanet = yes
| background = #FFC2E0
| name = 4954 Eric
| image = 004954-asteroid shape model (4954) Eric.png
| image_scale =
| caption = Shape model of Eric from its lightcurve
| discoverer = Brian P. Roman
| discovery_site = Palomar Obs.
| discovered = 23 September 1990
| mpc_name = (4954) Eric
| alt_names = 1990 SQ
| perihelion = {{Convert|1.10393|AU|Gm|abbr=on}}
| aphelion = {{Convert|2.8993|AU|Gm|abbr=on|lk=on}}
| semimajor = {{Convert|2.0016|AU|Gm|abbr=on}}
| eccentricity = 0.44848
| inclination = 17.4461°
| dimensions = 10.8 km
| abs_magnitude = 12.6
| spectral_type = S {{small|(SMASSII)}}
| albedo =
| epoch = 13 January 2016 (JD 2457400.5)
| asc_node = 358.52°
| arg_peri = 52.429°
| mean_anomaly = 314.18°
| mean_motion = {{Deg2DMS|0.34804|sup=ms}} / day
| mean_radius = 5.4 km
| observation_arc = 14681 days (40.19 yr)
| uncertainty = 0
| moid = {{Convert|0.194843|AU|Gm|abbr=on}}
}}
4954 Eric (prov. designation: {{mp|1990 SQ}}) is an eccentric, stony asteroid, classified as near-Earth object of the Amor group, approximately {{convert|11|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. It was discovered by American astronomer Brian Roman at Palomar Observatory on 23 September 1990. The asteroid was named after its discoverer's son, Eric Roman.
It is the largest near-Earth asteroid discovered since 3552 Don Quixote in 1983. On 2007 October 11 the asteroid passed {{convert|0.2865|AU|km mi|abbr=on|lk=off}} from Earth. It currently makes closer approaches to Mars than it does Earth. The asteroid has a rotation period of 12.05 hours.
Other large near-Earth asteroids include 1036 Ganymed (32 km), 3552 Don Quixote (19 km), 433 Eros (17 km), and 1866 Sisyphus (8.5 km).{{cite book|author1=Philip A. Bland|author2=Elaine A. Moore|author3=Ian Wright|author4=Mike Widdowson|title=An Introduction to the Solar System|url=https://books.google.com/books?id=CsX_E3gDaIoC&pg=PA394|date=2004|publisher=Cambridge University Press|isbn=978-0-521-54620-1|page=394}}
References
{{reflist|refs=
{{cite web|title=(4954) Eric = 1990 SQ|url=https://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=4954|publisher=Minor Planet Center|access-date=2015-06-04}}
|display-authors = 6
|first1 = J. |last1 = Hanus
|first2 = J. |last2 = Durech
|first3 = M. |last3 = Broz
|first4 = A. |last4 = Marciniak
|first5 = B. D. |last5 = Warner
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|first7 = R. |last7 = Stephens
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|first9 = B. |last9 = Carry
|first10 = D. |last10 = Capek
|first11 = P. |last11 = Antonini
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|first16 = A. |last16 = Bayol
|first17 = L. |last17 = Bernasconi
|first18 = W. |last18 = Borczyk
|first19 = J.-G. |last19 = Bosch
|first20 = E. |last20 = Brochard
|first21 = L. |last21 = Brunetto
|first22 = S. |last22 = Casulli
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|first32 = A. |last32 = Coupier
|first33 = R. |last33 = Crippa
|first34 = M. |last34 = Cristofanelli
|first35 = Ch. |last35 = Dalmas
|first36 = C. |last36 = Danavaro
|first37 = C. |last37 = Demeautis
|first38 = T. |last38 = Droege
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|first40 = N. |last40 = Esseiva
|first41 = M. |last41 = Esteban
|first42 = M. |last42 = Fagas
|first43 = G. |last43 = Farroni
|first44 = M. |last44 = Fauvaud
|first45 = S. |last45 = Fauvaud
|first46 = F. |last46 = Del Freo
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|first57 = M. |last57 = Husarik
|first58 = T. |last58 = Itkonen
|first59 = O. |last59 = Jade
|first60 = K. |last60 = Kaminski
|first61 = P. |last61 = Kankiewicz
|first62 = A. |last62 = Klotz
|first63 = R. A. |last63 = Koff
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|first65 = T. |last65 = Kwiatkowski
|first66 = A. |last66 = Laffont
|first67 = A. |last67 = Leroy
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|first69 = Y. |last69 = Leonie
|first70 = C. |last70 = Leyrat
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|first84 = J. |last84 = Oey
|first85 = W. |last85 = Ogloza
|first86 = A. |last86 = Oksanen
|first87 = D. |last87 = Oszkiewicz
|last88 = Pä
|last89 = ä
|last90 = kkö
|first91 = P. |last91 = nen
|first92 = M. |last92 = Paiella
|first93 = H. |last93 = Pallares
|first94 = J. |last94 = Paulo
|first95 = M. |last95 = Pavic
|first96 = B. |last96 = Payet
|first97 = M. |last97 = Polinska
|first98 = D. |last98 = Polishook
|first99 = R. |last99 = Poncy
|first100 = Y. |last100 = Revaz
|first101 = C. |last101 = Rinner
|first102 = M. |last102 = Rocca
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|first105 = R. |last105 = Roy
|first106 = H. |last106 = Saguin
|first107 = P. A. |last107 = Salom
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|first109 = G. |last109 = Santacana
|first110 = T. |last110 = Santana-Ros
|first111 = J.-P. |last111 = Sareyan
|first112 = K. |last112 = Sobkowiak
|first113 = S. |last113 = Sposetti
|first114 = D. |last114 = Starkey
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|first118 = B. |last118 = Trégon
|first119 = A. |last119 = Vagnozzi
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|date = March 2013
|title = Asteroids' physical models from combined dense and sparse photometry and scaling of the YORP effect by the observed obliquity distribution
|journal = Astronomy and Astrophysics
|volume = 551
|page = 16
|bibcode = 2013A&A...551A..67H
|doi = 10.1051/0004-6361/201220701
|arxiv = 1301.6943
|s2cid = 118627434 }}
|title=JPL Small-Body Database Search Engine: asteroids and NEOs and H < 13 (mag)
|publisher=JPL Solar System Dynamics
|url=http://ssd.jpl.nasa.gov/sbdb_query.cgi?obj_group=neo;obj_kind=ast;obj_numbered=all;OBJ_field=0;ORB_field=0;c1_group=OBJ;c1_item=Ai;c1_op=%3C;c1_value=13;table_format=HTML;max_rows=100;format_option=comp;c_fields=AcBhBgBjBiBnBsCkCqAiAp;.cgifields=format_option;.cgifields=obj_kind;.cgifields=obj_group;.cgifields=obj_numbered;.cgifields=ast_orbit_class;.cgifields=table_format;.cgifields=com_orbit_class&query=1&c_sort=ApA
|access-date=2013-04-11}}
|type=2012-09-04 last obs
|title=JPL Close-Approach Data: 4954 Eric (1990 SQ)
|url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=4954;cad=1#cad
|access-date=2013-10-30}}
}}
External links
- {{NeoDys|4954}}
- {{JPL small body}}
{{Minor planets navigator |(4953) 1990 MU |number=4954 |4955 Gold}}
{{Small Solar System bodies}}
{{Authority control}}
{{DEFAULTSORT:004954}}
Category:S-type asteroids (SMASS)
{{NE-asteroid-stub}}