“2542 Calpurnia”的意思、由来-开放百科全书

According to the surveys carried out by the Infrared Astronomical Satellite IRAS and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Calpurnia measures 27.6 and 20.854 kilometers in diameter, and its surface has an albedo of 0.0639 and 0.102, respectively.^[6]^[5] It has an absolute magnitude of 11.6.

Near-infrared spectroscopic observations, however, gave a higher albedo of 0.15 with a subsequently shorter diameter of 18 kilometers. Calpurnia has a featureless surface with up to 60% amorphous magnesium pyroxenes that might explain the high albedo for an carbonaceous outer-belt asteroid.^[4]

Lightcurve

As of 2017, no rotational lightcurve has been obtained. The body's spectral type, as well as its rotation period and shape remain unknown.^[21]

Naming

This minor planet was named after Calpurnia, the last wife of Julius Caesar.^[2] The approved naming citation was published by the Minor Planet Center on 8 April 1982 ({{small|M.P.C. 6834}}).^[23]

References

1. ^¹²³{{cite book |title = Dictionary of Minor Planet Names – (2542) Calpurnia |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 208 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_2543 |chapter = (2542) Calpurnia }}
2. ^¹²{{cite web |title = 2542 Calpurnia (1980 CF) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=2542 |accessdate = 18 June 2017}}
3. ^¹{{cite web |title = MPC/MPO/MPS Archive |work = Minor Planet Center |url = http://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html |accessdate = 18 June 2017}}
4. ^¹²³{{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 = J. |last6 = Dailey |first7 = P. R. M. |last7 = Eisenhardt |first8 = R. S. |last8 = McMillan |first9 = T. B. |last9 = Spahr |first10 = M. F. |last10 = Skrutskie |first11 = D. |last11 = Tholen |first12 = R. G. |last12 = Walker |first13 = E. L. |last13 = Wright |first14 = E. |last14 = DeBaun |first15 = D. |last15 = Elsbury |first16 = T., IV |last16 = Gautier |first17 = S. |last17 = Gomillion |first18 = A. |last18 = Wilkins |date = November 2011 |title = Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M |journal = The Astrophysical Journal |volume = 741 |issue = 2 |page = 20 |bibcode = 2011ApJ...741...68M |doi = 10.1088/0004-637X/741/2/68 |arxiv = 1109.4096 |access-date= 18 June 2017}}
5. ^¹²³{{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 |volume = 12 |pages = IRAS-A-FPA-3-RDR-IMPS-V6.0 |bibcode = 2004PDSS...12.....T |access-date= 8 December 2016}}
6. ^¹²³{{Cite journal |display-authors = 6 |first1 = Toshihiro |last1 = Kasuga |first2 = Fumihiko |last2 = Usui |first3 = Mai |last3 = Shirahata |first4 = Daisuke |last4 = Kuroda |first5 = Takafumi |last5 = Ootsubo |first6 = Natsuko |last6 = Okamura |first7 = Sunao |last7 = Hasegawa |date = February 2015 |title = Near-Infrared Spectra of High-Albedo Outer Main-Belt Asteroids |journal = The Astronomical Journal |volume = 149 |issue = 2 |id = 37 |page = 8 |bibcode = 2015AJ....149...37K |doi = 10.1088/0004-6256/149/2/37 }}
7. ^¹{{Cite journal |first1 = P. H. |last1 = Hasselmann |first2 = J. M. |last2 = Carvano |first3 = D. |last3 = Lazzaro |first4 = T. |last4 = Mothé-Diniz |date = February 2010 |title = SDSS-based taxonomic classification and orbital distribution of main belt asteroids |url = https://sbn.psi.edu/pds/resource/sdsstax.html |journal = Astronomy and Astrophysics |volume = 510 |page = 12 |bibcode = 2010A&A...510A..43C |doi = 10.1051/0004-6361/200913322 |access-date= 8 August 2017}}
8. ^¹{{cite web |title = LCDB Data for (2542) Calpurnia |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=2542%7CCalpurnia |accessdate = 18 June 2017}}

词条	2542 Calpurnia
释义	Orbit and classification Physical characterization Diameter and albedo Lightcurve Naming References External links {{Infobox planet \| minorplanet = yes \| name = 2542 Calpurnia \| background = #D6D6D6 \| image = \| image_size = \| caption = \| discovery_ref = \| discovered = 11 February 1980 \| discoverer = E. Bowell \| discovery_site = Anderson Mesa Stn. \| mpc_name = (2542) Calpurnia \| alt_names = 1980 CF{{·}}{{mp\|1972 XN\|2}} 1976 OE \| named_after = {{nowrap\|Calpurnia {{small\|(Julius Caesar's wife)}}^[2]}} \| mp_category = main-belt{{·}}{{small\|(outer)}} \| orbit_ref = \| epoch = 4 September 2017 (JD 2458000.5) \| uncertainty = 0 \| observation_arc = 62.57 yr (22,854 days) \| aphelion = 3.3624 AU \| perihelion = 2.8997 AU \| semimajor = 3.1311 AU \| eccentricity = 0.0739 \| period = 5.54 yr (2,024 days) \| mean_anomaly = 248.88° \| mean_motion = {{Deg2DMS\|0.1779\|sup=ms}} / day \| inclination = 4.6207° \| asc_node = 145.71° \| arg_peri = 47.930° \| dimensions = {{val\|18\|1}} km^[4] {{val\|20.854\|0.281}} km^[5] {{val\|27.6\|2.3}} km^[6] \| rotation = \| albedo = {{val\|0.0639\|0.012}}^[6] {{val\|0.102\|0.007}}^[5] {{val\|0.15\|0.02}}^[4] \| spectral_type = C ^[10] \| abs_magnitude = 11.6 }}2542 Calpurnia, provisionally designated {{mp\|1980 CF}}, is a carbonaceous high-albedo asteroid from the outer regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 11 February 1980, by American astronomer Edward Bowell at Anderson Mesa Station, Flagstaff, United States.^[12] The asteroid was named after Julius Caesar's wife, Calpurnia.^[2] Orbit and classification Calpurnia orbits the Sun in the outer main-belt at a distance of 2.9–3.4 AU once every 5 years and 6 months (2,024 days). Its orbit has an eccentricity of 0.07 and an inclination of 5° with respect to the ecliptic. In 1954, a first precovery was taken at the Palomar Observatory in California, extending the body's observation arc by 26 prior to its official discovery observation at Anderson Mesa.^[12] Physical characterization Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Calpurnia measures 27.6 and 20.854 kilometers in diameter, and its surface has an albedo of 0.0639 and 0.102, respectively.^[6]^[5] It has an absolute magnitude of 11.6. Near-infrared spectroscopic observations, however, gave a higher albedo of 0.15 with a subsequently shorter diameter of 18 kilometers. Calpurnia has a featureless surface with up to 60% amorphous magnesium pyroxenes that might explain the high albedo for an carbonaceous outer-belt asteroid.^[4] Lightcurve As of 2017, no rotational lightcurve has been obtained. The body's spectral type, as well as its rotation period and shape remain unknown.^[21] Naming This minor planet was named after Calpurnia, the last wife of Julius Caesar.^[2] The approved naming citation was published by the Minor Planet Center on 8 April 1982 ({{small\|M.P.C. 6834}}).^[23] References 1. ^¹²³{{cite book \|title = Dictionary of Minor Planet Names – (2542) Calpurnia \|last = Schmadel \| first = Lutz D. \|publisher = Springer Berlin Heidelberg \|page = 208 \|date = 2007 \|isbn = 978-3-540-00238-3 \|doi = 10.1007/978-3-540-29925-7_2543 \|chapter = (2542) Calpurnia }} 2. ^¹²{{cite web \|title = 2542 Calpurnia (1980 CF) \|work = Minor Planet Center \|url = http://www.minorplanetcenter.net/db_search/show_object?object_id=2542 \|accessdate = 18 June 2017}} 3. ^¹{{cite web \|title = MPC/MPO/MPS Archive \|work = Minor Planet Center \|url = http://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html \|accessdate = 18 June 2017}} 4. ^¹²³{{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 = J. \|last6 = Dailey \|first7 = P. R. M. \|last7 = Eisenhardt \|first8 = R. S. \|last8 = McMillan \|first9 = T. B. \|last9 = Spahr \|first10 = M. F. \|last10 = Skrutskie \|first11 = D. \|last11 = Tholen \|first12 = R. G. \|last12 = Walker \|first13 = E. L. \|last13 = Wright \|first14 = E. \|last14 = DeBaun \|first15 = D. \|last15 = Elsbury \|first16 = T., IV \|last16 = Gautier \|first17 = S. \|last17 = Gomillion \|first18 = A. \|last18 = Wilkins \|date = November 2011 \|title = Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters \|url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M \|journal = The Astrophysical Journal \|volume = 741 \|issue = 2 \|page = 20 \|bibcode = 2011ApJ...741...68M \|doi = 10.1088/0004-637X/741/2/68 \|arxiv = 1109.4096 \|access-date= 18 June 2017}} 5. ^¹²³{{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 \|volume = 12 \|pages = IRAS-A-FPA-3-RDR-IMPS-V6.0 \|bibcode = 2004PDSS...12.....T \|access-date= 8 December 2016}} 6. ^¹²³{{Cite journal \|display-authors = 6 \|first1 = Toshihiro \|last1 = Kasuga \|first2 = Fumihiko \|last2 = Usui \|first3 = Mai \|last3 = Shirahata \|first4 = Daisuke \|last4 = Kuroda \|first5 = Takafumi \|last5 = Ootsubo \|first6 = Natsuko \|last6 = Okamura \|first7 = Sunao \|last7 = Hasegawa \|date = February 2015 \|title = Near-Infrared Spectra of High-Albedo Outer Main-Belt Asteroids \|journal = The Astronomical Journal \|volume = 149 \|issue = 2 \|id = 37 \|page = 8 \|bibcode = 2015AJ....149...37K \|doi = 10.1088/0004-6256/149/2/37 }} 7. ^¹{{Cite journal \|first1 = P. H. \|last1 = Hasselmann \|first2 = J. M. \|last2 = Carvano \|first3 = D. \|last3 = Lazzaro \|first4 = T. \|last4 = Mothé-Diniz \|date = February 2010 \|title = SDSS-based taxonomic classification and orbital distribution of main belt asteroids \|url = https://sbn.psi.edu/pds/resource/sdsstax.html \|journal = Astronomy and Astrophysics \|volume = 510 \|page = 12 \|bibcode = 2010A&A...510A..43C \|doi = 10.1051/0004-6361/200913322 \|access-date= 8 August 2017}} 8. ^¹{{cite web \|title = LCDB Data for (2542) Calpurnia \|publisher = Asteroid Lightcurve Database (LCDB) \|url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=2542%7CCalpurnia \|accessdate = 18 June 2017}} ^[1]^[2]^[3]^[4]^[5]^[6]^[7]^[8] }} External links Asteroid Lightcurve Database (LCDB), query form (info) [https://books.google.com/books?id=aeAg1X7afOoC&pg Dictionary of Minor Planet Names], Google books Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center {{JPL small body}} {{Minor planets navigator\|2541 Edebono\|number=2542\|2543 Machado}}{{Small Solar System bodies}}{{DEFAULTSORT:Calpurnia}} 5 : Background asteroids\|Discoveries by Edward L. G. Bowell\|Minor planets named for people\|Named minor planets\|Astronomical objects discovered in 1980
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Orbit and classification

Physical characterization

Diameter and albedo

Lightcurve

Naming

References

External links