| 词条 | 1394 Algoa |
| 释义 |
| minorplanet = yes | name = 1394 Algoa | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = | discovered = 12 June 1936 | discoverer = C. Jackson | discovery_site = Johannesburg Obs. | mpc_name = (1394) Algoa | alt_names = 1936 LK{{·}}1929 TT {{mp|1933 UY|1}} | named_after = Algoa Bay {{small|(in South Africa)}}[2] | mp_category = main-belt{{·}}{{small|(inner)}} [3] | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 80.42 yr (29,372 days) | aphelion = 2.6253 AU | perihelion = 2.2531 AU | semimajor = 2.4392 AU | eccentricity = 0.0763 | period = 3.81 yr (1,391 days) | mean_anomaly = 94.682° | mean_motion = {{Deg2DMS|0.2587|sup=ms}} / day | inclination = 2.6746° | asc_node = 178.83° | arg_peri = 114.12° | dimensions = 14.22 km {{small|(calculated)}}[3] | rotation = {{val|2.768|0.001}} h[6][7] | albedo = 0.20 {{small|(assumed)}}[3] | spectral_type = S [3] | abs_magnitude = {{val|11.11|0.22}}[10]{{·}}11.6[3] }}1394 Algoa, provisional designation {{mp|1936 LK}}, is a stony asteroid from the inner regions of the asteroid belt, approximately 14 kilometers in diameter. It was discovered on 12 June 1936, by English-born South-African astronomer Cyril Jackson at Union Observatory in Johannesburg, South Africa.[13] The asteroid was named after the historical Algoa Bay.[2] Orbit and classificationAlgoa orbits the Sun in the inner main-belt at a distance of 2.3–2.6 AU once every 3 years and 10 months (1,391 days). Its orbit has an eccentricity of 0.08 and an inclination of 3° with respect to the ecliptic. Prior to its discovery observation in 1936, Algoa was identified as {{mp|1929 TT}} and {{mp|1933 UY|1}} at Lowell Observatory and Uccle Observatory, respectively. These observations, however, remained unused to extend the body's observation arc.[13]Physical characteristicsIn 2012, two rotational lightcurves of Algoa were obtained at the U.S. Etscorn Observatory, New Mexico, and at the Riverland Dingo Observatory, Australia. They gave a well-defined, concurring rotation period of 2.768 hours with a brightness variation of 0.20 and 0.21 magnitude, respectively ({{small|U=3-/3}}).[6][7] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony S-type asteroids of 0.20, and calculates a diameter of 14.2 kilometers with an absolute magnitude of 11.6.[3] NamingThis minor planet was named after the historical Algoa Bay, located approximately 700 kilometers east of the Cape of Good Hope, South Africa.[2] The approved naming citation was published by the Minor Planet Center before November 1977 ({{small|M.P.C. 909}}).[21] References1. ^1 2 3 {{cite book |title = Dictionary of Minor Planet Names – (1394) Algoa |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 113 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1395 |chapter = (1394) Algoa }} [1][2][3][4][5][6][7]2. ^1 2 {{cite web |title = 1394 Algoa (1936 LK) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1394 |accessdate = 13 December 2016}} 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 = 13 December 2016}} 4. ^1 2 3 4 5 6 {{cite web |title = LCDB Data for (1394) Algoa |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1394%7CAlgoa |accessdate = 13 December 2016}} 5. ^1 2 {{Cite journal |first1 = Daniel A., III |last1 = Klinglesmith |first2 = Ethan |last2 = Risley |first3 = Janek |last3 = Turk |first4 = Angelica |last4 = Vargas |first5 = Curtis |last5 = Warren |date = January 2013 |title = Lightcurves for 1394 Algoa, 3078 Horrocks, 4724 Brocken, and 6329 Hikonejyo from Etscorn Campus Observatory |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40...16K |journal = The Minor Planet Bulletin |volume = 40 |issue = 1 |pages = 16–17 |issn = 1052-8091 |bibcode = 2013MPBu...40...16K |access-date= 13 December 2016}} 6. ^1 2 {{Cite journal |author = Hills, Kevin |date = October 2012 |title = Asteroid Lightcurve Analysis at Riverland Dingo Observatory: 1394 Algoa, 1660 Wood, 8882 Sakaetamura, and (15269) 1990 XF |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MPBu...39..239H |journal = The Minor Planet Bulletin |volume = 39 |issue = 4 |pages = 239–240 |issn = 1052-8091 |bibcode = 2012MPBu...39..239H |access-date= 13 December 2016}} 7. ^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= 13 December 2016}} }} External links
5 : Background asteroids|Discoveries by Cyril V. Jackson|Minor planets named for places|Named minor planets|Astronomical objects discovered in 1936 |
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