| 词条 | 952 Caia |
| 释义 |
| minorplanet = yes | name = 952 Caia | background = #D6D6D6 | image = | caption = | discovery_ref = | discovered = 27 October 1916 | discoverer = G. Neujmin | discovery_site = Simeiz Obs. | mpc_name = (952) Caia | alt_names = {{mp|1916 Σ6|1}}{{·}}1973 WH A908 EB{{·}}A919 GB A921 RA | named_after = Caia[2] | mp_category = main-belt{{·}}{{small|(outer)}} [3] background | orbit_ref = | epoch = 16 February 2017 (JD 2457800.5) | uncertainty = 0 | observation_arc = 99.63 yr (36,389 days) | aphelion = 3.7294 AU | perihelion = 2.2611 AU | semimajor = 2.9952 AU | eccentricity = 0.2451 | period = 5.18 yr (1,893 days) | mean_anomaly = 161.29° | mean_motion = {{Deg2DMS|0.1901|sup=ms}} / day | inclination = 10.038° | asc_node = 18.567° | arg_peri = 355.23° | dimensions = 81.53 km {{small|(derived)}}[3] {{val|81.61|4.6}} km {{small|(IRAS:12)}}[6] {{val|85.02|0.91}} km[7] {{val|87.97|0.97}} km[8] {{val|88.692|0.422}}[9] {{val|88.758|1.405}} km[10] | rotation = {{val|3.79|}} h[11] {{val|3.795|0.001}} h[11] {{val|7.50|0.01}} h[13] {{val|7.51|}} h[14] | albedo = {{val|0.0398|0.0038}}[10] {{val|0.047|0.011}}[7][9] {{val|0.048|0.001}}[8] 0.0506 {{small|(derived)}}[3] {{val|0.0554|0.007}} {{small|(IRAS:12)}}[6] | spectral_type = P [10]{{·}}C [3] | abs_magnitude = {{val|9.17|0.21}}[23]{{·}}9.2[6][8][10]{{·}}9.30[3][7] }}952 Caia, provisional designation {{mp|1916 Σ|61}}, is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately {{convert|82|km|mi|abbr=off|sp=us}} in diameter. It was discovered by Soviet–Russian astronomer Grigory Neujmin at the Crimean Simeiz Observatory on 27 October 1916.[30] It was named after the heroine in the novel Quo Vadis by Henryk Sienkiewicz.[2] Orbit and classificationCaia is a non-family asteroid from the main belt's background population. It orbits the Sun in the outer asteroid belt at a distance of 2.3–3.7 AU once every 5 years and 2 months (1,893 days). Its orbit has an eccentricity of 0.25 and an inclination of 10° with respect to the ecliptic. The first unused observation was made at the U.S Taunton Observatory {{Obscode|803}} in 1908, when it was identified as {{mp|1908 EB}}, extending the body's observation arc by 8 years prior to its official discovery observation.[30]The body's odd provisional designation, {{mp|1916 Σ|61}}, was assigned at the discovering Simeiz Observatory during the First World War, when communication with the German Astronomisches Rechen-Institut, then in charge of assigning designations, was not possible over long periods of time. Instead, the observatory assigned their own, custom provisional designations containing the Greek letter sigma (Σ), in order to avoid multiple assignments. For simplicity, the letter sigma is often represented by the letter "S". NamingThis minor planet was named after "Caia", a heroine in the historical novel Quo Vadis written by Polish journalist, novelist and laureate of the Nobel Prize in Literature in 1905, Henryk Sienkiewicz (1846–1916).[2] Physical characteristicsCaia is a carbonaceous C-type asteroid. It is also classified as a P-type asteroid by NASA's Wide-field Infrared Survey Explorer (WISE).[10]Rotation periodTwo photoelectric lightcurve observations from 1980 rendered a rotation period of 7.50 and 7.51 hours ({{small|U=2/2}}),[13][14] while a more recent light-curve analysis in 2004 gave a period of {{val|3.795|0.001}} hours (or half the previously determined period) with a very low brightness variation of 0.03 in magnitude ({{small|U=2}}), which typically indicates a nearly spheroidal shape.[11] Diameter and albedoAccording to the surveys carried out by the Infrared Astronomical Satellite, IRAS, the Japanese Akari satellite, and the WISE telescope with its subsequent NEOWISE mission, the asteroid has a diameter between 81.6 and 88.8 kilometers and a low albedo in the range of 0.040 and 0.056.[6][7][8][9][10] The Collaborative Asteroid Lightcurve Link agrees with the spaced-based observations and derives an albedo of 0.051 with a corresponding diameter of 81.5 kilometers.[3] References1. ^1 2 3 {{cite book |title = Dictionary of Minor Planet Names – (952) Caia |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 84 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_953 |chapter = (952) Caia }} [1][2][3][4][5][6][7][8][9][10][11][12]2. ^1 2 {{cite web |title = 952 Caia (1916 S61) |work = Minor Planet Center |url = https://www.minorplanetcenter.net/db_search/show_object?object_id=952 |accessdate = 4 July 2016}} 3. ^1 2 3 {{cite web |title = Asteroids and comets rotation curves – (952) Caia |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page3cou.html#000952 |accessdate = 4 July 2016}} 4. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (952) Caia |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=952%7CCaia |accessdate = 4 July 2016}} 5. ^1 2 3 4 {{cite journal |first1 = E. F. |last1 = Tedesco |first2 = P. V. |last2 = Noah |first3 = M. |last3 = Noah |first4 = S. D. |last4 = Price |date = October 2004 |title = IRAS Minor Planet Survey V6.0 |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004PDSS...12.....T |journal = NASA Planetary Data System |pages = IRAS-A-FPA-3-RDR-IMPS-V6.0 |bibcode = 2004PDSS...12.....T |access-date= 4 July 2016}} 6. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = Fumihiko |last1 = Usui |first2 = Daisuke |last2 = Kuroda |first3 = Thomas G. |last3 = Müller |first4 = Sunao |last4 = Hasegawa |first5 = Masateru |last5 = Ishiguro |first6 = Takafumi |last6 = Ootsubo |first7 = Daisuke |last7 = Ishihara |first8 = Hirokazu |last8 = Kataza |first9 = Satoshi |last9 = Takita |first10 = Shinki |last10 = Oyabu |first11 = Munetaka |last11 = Ueno |first12 = Hideo |last12 = Matsuhara |first13 = Takashi |last13 = Onaka |date = October 2011 |title = Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011PASJ...63.1117U |journal = Publications of the Astronomical Society of Japan |volume = 63 |issue = 5 |pages = 1117–1138 |bibcode = 2011PASJ...63.1117U |doi = 10.1093/pasj/63.5.1117 |access-date= 4 July 2016}} 7. ^1 2 3 4 5 6 {{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 }} 8. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = Joseph R. |last1 = Masiero |first2 = A. K. |last2 = Mainzer |first3 = T. |last3 = Grav |first4 = J. M. |last4 = Bauer |first5 = R. M. |last5 = Cutri |first6 = C. |last6 = Nugent |first7 = M. S. |last7 = Cabrera |date = November 2012 |title = Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M |journal = The Astrophysical Journal Letters |volume = 759 |issue = 1 |page = 5 |bibcode = 2012ApJ...759L...8M |doi = 10.1088/2041-8205/759/1/L8 |arxiv = 1209.5794 |access-date= 4 July 2016}} 9. ^1 2 {{Cite journal |first1 = A. W. |last1 = Harris |first2 = J. W. |last2 = Young |date = July 1980 |title = Asteroid rotation. III - 1978 observations |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1980Icar...43...20H |journal = Icarus |volume = 43 |issue = 1 |pages = 20–32 |bibcode = 1980Icar...43...20H |doi = 10.1016/0019-1035(80)90084-6 |access-date= 4 July 2016}} 10. ^1 2 {{Cite journal |first1 = R. |last1 = Stanzel |first2 = H. J. |last2 = Schober |date = January 1980 |title = The asteroids 118 Peitho and 952 CAIA - Rotation periods and lightcurves from photoelectric observations |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1980A&AS...39....3S |journal = Astronomy and Astrophysics Supplement Series |volume = 39 |pages = 3–5.ResearchsupportedbytheOesterreichischerFondszurFoerderungderwissenschaftlichenForschung |bibcode = 1980A&AS...39....3S |access-date= 4 July 2016}} 11. ^1 {{cite journal |display-authors = 6 |first1 = Peter |last1 = Veres |first2 = Robert |last2 = Jedicke |first3 = Alan |last3 = Fitzsimmons |first4 = Larry |last4 = Denneau |first5 = Mikael |last5 = Granvik |first6 = Bryce |last6 = Bolin |first7 = Serge |last7 = Chastel |first8 = Richard J. |last8 = Wainscoat |first9 = William S. |last9 = Burgett |first10 = Kenneth C. |last10 = Chambers |first11 = Heather |last11 = Flewelling |first12 = Nick |last12 = Kaiser |first13 = Eugen A. |last13 = Magnier |first14 = Jeff S. |last14 = Morgan |first15 = Paul A. |last15 = Price |first16 = John L. |last16 = Tonry |first17 = Christopher |last17 = Waters |date = November 2015 |title = Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V |journal = Icarus |volume = 261 |pages = 34–47 |bibcode = 2015Icar..261...34V |doi = 10.1016/j.icarus.2015.08.007 |arxiv = 1506.00762 |access-date= 4 July 2016}} 12. ^1 2 3 {{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= 12 December 2016}} }} External links
6 : Background asteroids|Discoveries by Grigory Neujmin|Minor planets named from literature|Named minor planets|Astronomical objects discovered in 1916|Minor planets named for fictional characters |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。