| 词条 | 1303 Luthera |
| 释义 |
| minorplanet = yes | name = 1303 Luthera | background = #D6D6D6 | image = | image_size = | caption = | discovery_ref = | discoverer = A. Schwassmann | discovery_site = Bergedorf Obs. | discovered = 16 March 1928 | mpc_name = (1303) Luthera | alt_names = 1928 FP{{·}}1926 XD 1928 HH{{·}}{{mp|1972 VP|1}} A917 KC | pronounced = | named_after = Robert Luther [2] {{small|(German astronomer)}} | mp_category = main-belt{{·}}{{small|(outer)}} [4] Luthera [5] | orbit_ref = | epoch = 4 September 2017 (JD 2458000.5) | uncertainty = 0 | observation_arc = 89.60 yr (32,726 days) | aphelion = 3.5680 AU | perihelion = 2.8910 AU | semimajor = 3.2295 AU | eccentricity = 0.1048 | period = 5.80 yr (2,120 days) | mean_anomaly = 198.00° | mean_motion = {{Deg2DMS|0.1698|sup=ms}} / day | inclination = 19.491° | asc_node = 72.049° | arg_peri = 100.43° | dimensions = {{val|81.685|0.494}} km[7] 85.08 km {{small|(derived)}}[4] {{val|87.15|1.13}} km[9] {{val|90.65|25.04}} km[10] {{val|91.35|24.52}} km[11] {{val|92.118|2.084}} km[12] {{val|112.74|1.41}} km[13] | rotation = {{val|5.878|0.003}} h[14] {{val|7.92|0.05}} h[15] | albedo = {{val|0.024|0.003}}[13] 0.0387 {{small|(derived)}}[4] {{val|0.04|0.02}}[11] {{val|0.04|0.03}}[10] {{val|0.0523|0.0093}}[12] {{val|0.059|0.002}}[9] | spectral_type = C [4] | abs_magnitude = 9.00[9][12]{{·}}9.40[10][13]{{·}}9.5[4]{{·}}9.51[11] }}1303 Luthera, provisional designation {{mp|1928 FP}}, is a dark asteroid and the parent body of the Luthera family, located in the outermost regions of the asteroid belt. It measures approximately 90 kilometers in diameter. The asteroid was discovered on 16 March 1928, by astronomer Friedrich Schwassmann at the Bergedorf Observatory in Hamburg, Germany, and later named after German astronomer Robert Luther.[2][31] Orbit and classificationLuthera is the parent body of the Luthera family ({{small|904}}), a smaller asteroid family of less than 200 known members.[5][33]{{rp|23}} It orbits the Sun in the outermost asteroid belt at a distance of 2.9–3.6 AU once every 5 years and 10 months (2,120 days; semi-major axis of 3.23 AU). Its orbit has an eccentricity of 0.10 and an inclination of 19° with respect to the ecliptic.The asteroid was first observed as {{mp|A917 KC}} at Simeiz Observatory in May 2017. The body's observation arc begins at Heidelberg Observatory in April 1928, or one month after its official discovery observation at Bergedorf.[31] Physical characteristicsDue to its low geometric albedo, Luthera is an assumed carbonaceous C-type asteroid,[4] while the overall spectral type for members of the Luthera family is that of an X-type.[33]{{rp|23}} Rotation periodIn February 2008, a rotational lightcurve of Luthera was obtained from photometric observations by Mexican astronomer Pedro Sada at the University of Monterrey, Mexico. Lightcurve analysis gave a short rotation period of 5.878 hours with a low brightness variation of 0.05 magnitude, indicative for a nearly spherical shape ({{small|U=3}}).[14] A lower-rated lightcurve with a period of 7.92 hours and an amplitude of 0.06 magnitude was obtained by French amateur astronomer Pierre Antonini in May 2009 ({{small|U=2}}).[15] Diameter and albedoAccording to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Luthera measures between 81.685 and 112.74 kilometers in diameter and its surface has a low albedo between 0.024 and 0.059.[7][9][10][11][12][13] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0387 and a diameter of 85.08 kilometers based on an absolute magnitude of 9.5.[4] NamingThis minor planet was named after German astronomer Karl Theodor Robert Luther (1822–1900), who was a discoverer of minor planets himself, most notably 17 Thetis, 90 Antiope (binary) and 288 Glauke (slow rotator). The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 ({{small|{{MoMP|1303|H 119}}}}). The lunar crater Luther has also been named after him.[2] References1. ^1 2 3 {{cite book |title = Dictionary of Minor Planet Names – (1303) Luthera |last = Schmadel | first = Lutz D. |publisher = Springer Berlin Heidelberg |page = 107 |date = 2007 |isbn = 978-3-540-00238-3 |doi = 10.1007/978-3-540-29925-7_1304 |chapter = (1303) Luthera }} [1][2][3][4][5][6][7][8][9][10][11][12][13]2. ^1 2 {{cite web |title = 1303 Luthera (1928 FP) |work = Minor Planet Center |url = http://www.minorplanetcenter.net/db_search/show_object?object_id=1303 |accessdate = 15 December 2017}} 3. ^1 2 {{cite web |title = Asteroids and comets rotation curves – (1303) Luthera |last = Behrend |first = Raoul |publisher = Geneva Observatory |url = http://obswww.unige.ch/~behrend/page4cou.html#001303 |accessdate = 15 December 2017}} 4. ^1 2 {{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 |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 }} 5. ^1 2 {{cite web |title = Small Bodies Data Ferret |work = Nesvorny HCM Asteroid Families V3.0 |url = https://sbntools.psi.edu/ferret/PropertySearch/familyForm.action |accessdate = 15 December 2017}} 6. ^1 2 {{Cite book |first1 = D. |last1 = Nesvorný |first2 = M. |last2 = Broz |first3 = V. |last3 = Carruba |date = December 2014 |title = Identification and Dynamical Properties of Asteroid Families |journal = Asteroids IV |pages = 297–321 |bibcode = 2015aste.book..297N |doi = 10.2458/azu_uapress_9780816532131-ch016 |arxiv = 1502.01628 |isbn = 9780816532131 }} 7. ^1 2 3 4 5 6 7 {{cite web |title = LCDB Data for (1303) Luthera |publisher = Asteroid Lightcurve Database (LCDB) |url = http://www.minorplanet.info/PHP/GenerateALCDEFPage_Local.php?AstInfo=1303%7CLuthera |accessdate = 15 December 2017}} 8. ^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://pasj.oxfordjournals.org/content/63/5/1117.full.pdf+html |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= 15 December 2017}} 9. ^1 2 3 4 {{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 }} 10. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = C. R. |last1 = Nugent |first2 = A. |last2 = Mainzer |first3 = J. |last3 = Bauer |first4 = R. M. |last4 = Cutri |first5 = E. A. |last5 = Kramer |first6 = T. |last6 = Grav |first7 = J. |last7 = Masiero |first8 = S. |last8 = Sonnett |first9 = E. L. |last9 = Wright |date = September 2016 |title = NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016AJ....152...63N |journal = The Astronomical Journal |volume = 152 |issue = 3 |page = 12 |bibcode = 2016AJ....152...63N |doi = 10.3847/0004-6256/152/3/63 |arxiv = 1606.08923 |access-date= 15 December 2017}} 11. ^1 2 3 4 {{cite journal |display-authors = 6 |first1 = C. R. |last1 = Nugent |first2 = A. |last2 = Mainzer |first3 = J. |last3 = Masiero |first4 = J. |last4 = Bauer |first5 = R. M. |last5 = Cutri |first6 = T. |last6 = Grav |first7 = E. |last7 = Kramer |first8 = S. |last8 = Sonnett |first9 = R. |last9 = Stevenson |first10 = E. L. |last10 = Wright |date = December 2015 |title = NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N |journal = The Astrophysical Journal |volume = 814 |issue = 2 |page = 13 |bibcode = 2015ApJ...814..117N |doi = 10.1088/0004-637X/814/2/117 |arxiv = 1509.02522 |access-date= 15 December 2017}} 12. ^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= 15 December 2017}} 13. ^1 2 {{Cite journal |author = Sada, Pedro V. |date = September 2008 |title = CCD Photometry of Six Asteroids from the Universidad de Monterry Observatory |url = http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35..105S |journal = The Minor Planet Bulletin |volume = 35 |issue = 3 |pages = 105–107 |issn = 1052-8091 |bibcode = 2008MPBu...35..105S |access-date= 15 December 2017}} }} External links
5 : Luthera asteroids|Discoveries by Friedrich Karl Arnold Schwassmann|Minor planets named for people|Named minor planets|Astronomical objects discovered in 1928 |
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