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词条 1865 Cerberus
释义

  1. Orbit and classification

  2. Physical characteristics

  3. Naming

  4. References

  5. External links

{{For|the moon of Pluto|Kerberos (moon)}}{{Infobox planet
| minorplanet = yes
| name = 1865 Cerberus
| background = #FFC2E0
| image = 1865Cerberus (Lightcurve Inversion).png
| image_size = 265
| caption = {{longitem|Lightcurve-based 3D-model of Cerberus|style=padding: 5px 0; line-height: 1.3em;}}
| discovery_ref =  [1]
| discovered = 26 October 1971
| discoverer = L. Kohoutek
| discovery_site = Bergedorf Obs.
| mpc_name = (1865) Cerberus
| alt_names = 1971 UA
| named_after = Cerberus {{small|(Greek mythology)}}[2]
| pronounced = {{IPAc-en|ˈ|s|ɜr|b|ər|ə|s}} {{respell|SUR|bər|əs}}
| mp_category = NEO{{·}}Apollo [1][4]
| orbit_ref =  [1]
| epoch = 4 September 2017 (JD 2458000.5)
| uncertainty = 0
| observation_arc = 45.05 yr (16,456 days)
| aphelion = 1.5844 AU
| perihelion = 0.5757 AU
| semimajor = 1.0801 AU
| eccentricity = 0.4669
| period = 1.12 yr (410 days)
| mean_anomaly = 205.19°
| mean_motion = {{Deg2DMS|0.8781|sup=ms}} / day
| inclination = 16.095°
| asc_node = 212.93°
| arg_peri = 325.26°
| moid = 0.1567 AU{{·}}61 LD
| dimensions = 1.2 km {{small|(Gehrels)}}[1]
{{val|1.608|}} km[7]
1.61 km {{small|(taken)}}[8]
{{val|1.611|0.013}} km[9]
| rotation = {{val|6.800|0.006}} h[10]
{{val|6.80328|0.00001}} h[11]
{{val|6.803286|0.000005}} h[12]
{{val|6.8039|}} h{{refn|name=LCDB-Pravec-2008}}
{{val|6.804|0.003}} h[13]
{{val|6.81|}} h{{refn|name=LCDB-Pravec-1999}}
{{val|6.810|0.003}} h[14]
{{val|6.87|}} h[15]
| albedo = {{val|0.1118|}}[7]
{{val|0.136|0.021}}[9]
0.22
{{val|0.50|0.29}}[18]
| spectral_type = {{nowrap|S {{small|(Tholen)}}[1]{{·}}S {{small|(SMASS)}}[1]}}
S [8][22]
B–V = 0.790[1]
U–B = 0.442[1]
| abs_magnitude = {{val|16.45|0.07}} {{small|(R)}}{{refn|name=LCDB-Pravec-2008}}
16.84[1][9]
{{val|16.965|0.04}}[7][8]
{{val|16.97|0.04}}[10]
{{val|16.97|0.13}}[14]
}}1865 Cerberus, provisional designation {{mp|1971 UA}}, is a stony asteroid and near-Earth object of the Apollo group, approximately 1.6 kilometers in diameter. It was discovered on 26 October 1971, by Czech astronomer Luboš Kohoutek at the Hamburger Bergedorf Observatory, Germany, and named for Cerberus from Greek mythology.[2][4]

Orbit and classification

Cerberus orbits the Sun at a distance of 0.6–1.6 AU once every 1 years and 1 month (410 days). Its orbit has an eccentricity of 0.47 and an inclination of 16° with respect to the ecliptic.[1]

The Apollo asteroid has an Earth minimum orbital intersection distance of {{convert |0.1567 |AU |km |abbr=on |sigfig=3}}, which corresponds to 61 lunar distances. It passes within 30 gigametres (Gm) of the Earth 7 times from the year 1900 to the year 2100, each time at a distance of 24.4 Gm to 25.7 Gm. It also makes close approaches to Mars and Venus.[1]

Physical characteristics

In the Tholen and SMASS taxonomy, Cerberus is a common stony S-type asteroid,[1] composed of 65% plagioclase and 35% pyroxene.[36] It has a rotation period of 6.804 hours and a geometric albedo of 0.220.[1][8] With a maximum lightcurve range of 2.3,{{refn|name=LCDB-Pravec-2008}} Cerberus may be cigar shaped like 1I/ʻOumuamua.

Naming

This minor planet is named after the figure from Greek mythology, Cerberus, a three-headed dog that guarded the entrance to Hades, the Underworld. His capture marked the last of the twelve labors of Hercules. It is also the name of an extinct constellation, Cerberus, now contained in the eastern part of Hercules.[2] (It should not be confused with Kerberos, a moon of the dwarf planet Pluto.) The official naming citation was published by the Minor Planet Center before November 1977 ({{small|M.P.C. 3758}}).[40]

References

1. ^1 2 3 4 5 6 7 8 9 10 11 12 13 {{cite web |type = 2016-11-14 last obs. |title = JPL Small-Body Database Browser: 1865 Cerberus (1971 UA) |url = http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001865 |publisher = Jet Propulsion Laboratory |accessdate = 9 June 2017}}
2. ^1 2 3 {{cite book |title = Dictionary of Minor Planet Names – (1865) Cerberus |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |pages = 149–150 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1866 |chapter = (1865) Cerberus }}
3. ^1 2 {{cite web |title = 1865 Cerberus (1971 UA) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1865 |accessdate = 12 December 2016}}
4. ^1 {{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = http://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 12 December 2016}}
5. ^1 {{cite web |author = L.A. Lebofsky |author2 = M.L. Nelson |title = Compositions of Near-Earth Asteroids |publisher = University of Arizona |url = https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19910015928.pdf |access-date=6 November 2015}}
6. ^1 2 3 4 5 {{cite web |title = LCDB Data for (1865) Cerberus |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1865%7CCerberus |accessdate = 12 December 2016}}
7. ^1 2 3 {{Cite journal |first1 = Petr |last1 = Pravec |first2 = Alan W. |last2 = Harris |first3 = Peter |last3 = Kusnirák |first4 = Adrián |last4 = Galád |first5 = Kamil |last5 = Hornoch |date = September 2012 |title = Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221..365P |journal = Icarus |volume = 221 |issue = 1 |pages = 365–387 |bibcode = 2012Icar..221..365P |doi = 10.1016/j.icarus.2012.07.026 |access-date= 12 December 2016}}
8. ^1 2 3 {{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 }}
9. ^1 2 {{Cite journal |first1 = A. W. |last1 = Harris |first2 = J. W. |last2 = Young |date = October 1989 |title = Asteroid lightcurve observations from 1979-1981 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1989Icar...81..314H |journal = Icarus |volume = 81 |issue = 2 |pages = 314–364 |issn = 0019-1035 |bibcode = 1989Icar...81..314H |doi = 10.1016/0019-1035(89)90056-0 |access-date= 12 December 2016}}
10. ^1 2 {{Cite journal |first1 = W. Z. |last1 = Wisniewski |first2 = T. M. |last2 = Michalowski |first3 = A. W. |last3 = Harris |first4 = R. S. |last4 = McMillan |date = March 1995 |title = Photoelectric Observations of 125 Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1995LPI....26.1511W |journal = Abstracts of the Lunar and Planetary Science Conference |volume = 26 |pages = 1511 |bibcode = 1995LPI....26.1511W |access-date= 12 December 2016}}
11. ^1 {{Cite journal |first1 = K. |last1 = Sárneczky |first2 = Gy. |last2 = Szabó |first3 = L. L. |last3 = Kiss |date = June 1999 |title = CCD observations of 11 faint asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1999A&AS..137..363S |journal = Astronomy and Astrophysics Supplement |volume = 137 |issue = 2 |pages = 363–368 |bibcode = 1999A&AS..137..363S |doi = 10.1051/aas:1999251 |access-date= 12 December 2016}}
12. ^1 {{Cite journal |first1 = Brian A. |last1 = Skiff |first2 = Edward |last2 = Bowell |first3 = Bruce W. |last3 = Koehn |first4 = Jason J. |last4 = Sanborn |first5 = Kyle P. |last5 = McLelland |first6 = Brian D. |last6 = Warner |date = July 2012 |title = Lowell Observatory Near-Earth Asteroid Photometric Survey (NEAPS) - 2008 May through 2008 December |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MPBu...39..111S |journal = The Minor Planet Bulletin |volume = 39 |issue = 3 |pages = 111–130 |issn = 1052-8091 |bibcode = 2012MPBu...39..111S |access-date= 12 December 2016}}
13. ^1 {{Cite journal |display-authors = 6 |first1 = J. |last1 = Durech |first2 = D. |last2 = Vokrouhlický |first3 = A. R. |last3 = Baransky |first4 = S. |last4 = Breiter |first5 = O. A. |last5 = Burkhonov |first6 = W. |last6 = Cooney |first7 = V. |last7 = Fuller |first8 = N. M. |last8 = Gaftonyuk |first9 = J. |last9 = Gross |first10 = R. Ya. |last10 = Inasaridze |first11 = M. |last11 = Kaasalainen |first12 = Yu. N. |last12 = Krugly |first13 = O. I. |last13 = Kvaratshelia |first14 = E. A. |last14 = Litvinenko |first15 = B. |last15 = Macomber |first16 = F. |last16 = Marchis |first17 = I. E. |last17 = Molotov |first18 = J. |last18 = Oey |first19 = D. |last19 = Polishook |first20 = J. |last20 = Pollock |first21 = P. |last21 = Pravec |first22 = K. |last22 = Sárneczky |first23 = V. G. |last23 = Shevchenko |first24 = I. |last24 = Slyusarev |first25 = R. |last25 = Stephens |first26 = Gy. |last26 = Szabó |first27 = D. |last27 = Terrell |first28 = F. |last28 = Vachier |first29 = Z. |last29 = Vanderplate |first30 = M. |last30 = Viikinkoski |first31 = B. D. |last31 = Warner |date = November 2012 |title = Analysis of the rotation period of asteroids (1865) Cerberus, (2100) Ra-Shalom, and (3103) Eger - search for the YORP effect |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012A&A...547A..10D |journal = Astronomy and Astrophysics |volume = 547 |page = 9 |bibcode = 2012A&A...547A..10D |doi = 10.1051/0004-6361/201219396 |access-date= 12 December 2016|arxiv = 1210.2219 }}
14. ^1 {{cite journal |first1 = J. |last1 = Hanus |first2 = M. |last2 = Delbo' |first3 = J. |last3 = Durech |first4 = V. |last4 = Alí-Lagoa |date = August 2015 |title = Thermophysical modeling of asteroids from WISE thermal infrared data - Significance of the shape model and the pole orientation uncertainties |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..256..101H |journal = Icarus |volume = 256 |pages = 101–116 |bibcode = 2015Icar..256..101H |doi = 10.1016/j.icarus.2015.04.014 |arxiv = 1504.04199 |access-date= 12 December 2016}}
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{{refn|name=LCDB-Pravec-2008|1=Detail: "Pravec2008web" at LCDB Data for (1865) Cerberus[8]}}[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]

}}

External links

  • Asteroid Lightcurve Database (LCDB), query form (info)
  • [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books
  • Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
  • {{JPL small body}}
  • Les NEO (Near-Earth Objects), Michel-Alain Combes, (in French)
  • Astrosurf, names of NEAs Les Noms des NEA – liste alphabétique (Excel spreadsheet in French)
{{Minor planets navigator|1864 Daedalus|number=1865|1866 Sisyphus}}{{Small Solar System bodies}}{{DEFAULTSORT:Cerberus}}

7 : Apollo asteroids|Discoveries by Luboš Kohoutek|Minor planets named from Greek mythology|Named minor planets|S-type asteroids (Tholen)|S-type asteroids (SMASS)|Astronomical objects discovered in 1971
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