| 词条 | 160 Una |
| 释义 |
| minorplanet=yes | background=#D6D6D6 | name=160 Una | image= 160Una (Lightcurve Inversion).png | image_size = 265 | caption=A three-dimensional model of 160 Una based on its light curve. | discoverer=C. H. F. Peters | discovered=20 February 1876 | mpc_name=(160) Una | alt_names= | pronounced={{IPAc-en|'|j|uː|n|ə}} | mp_category=Main belt | epoch=31 July 2016 (JD 2457600.5) | orbit_ref= [1] | semimajor={{Convert|2.72802|AU|Gm|abbr=on}} | perihelion={{Convert|2.54727|AU|Gm|abbr=on}} | aphelion={{Convert|2.90877|AU|Gm|abbr=on|lk=on}} | eccentricity=0.066257 | period=4.51 yr (1645.8 d) | inclination=3.82512° | asc_node=8.60989° | arg_peri=52.8418° | mean_anomaly=144.472° | avg_speed=18.01 km/s | dimensions={{val|81.24|2.1|ul=km}} | mass=5.6×1017 kg (assumed) | density=2.0? g/cm³ | surface_grav=0.0227 m/s² | escape_velocity=0.0429 km/s | rotation={{Convert|11.033|h|d|abbr=on|lk=on}} [1] 0.234 d (5.61 h) [3][1] | spectral_type=C [2] | abs_magnitude=9.08,[1] 8.95 [7] | albedo={{val|0.0625|0.003}} [1] 0.063 [3] | single_temperature=~170 K | mean_motion={{Deg2DMS|0.218742|sup=ms}} / day | observation_arc=118.30 yr (43209 d) | uncertainty=0 | moid={{Convert|1.56031|AU|Gm|abbr=on}} | jupiter_moid={{Convert|2.30107|AU|Gm|abbr=on}} | tisserand=3.349 }} Una (minor planet designation: 160 Una) is a fairly large and dark, primitive Main belt asteroid that was discovered by German-American astronomer C. H. F. Peters on February 20, 1876, in Clinton, New York. It is named after a character in Edmund Spenser's epic poem The Faerie Queene (1590). In the Tholen classification system it is categorized as a CX-type, while the Bus asteroid taxonomy system lists it as an Xk asteroid.[11] Photometric observations of this asteroid made at the Torino Observatory in Italy during 1990–1991 were used to determine a synodic rotation period of 5.61 ± 0.01 hours.[3] References1. ^{{cite web|url=http://www.astrosurf.com/aude-old/map_files/AstVarMAP01-2003.htm |title=Lightcurves and map data on numbered asteroids N° 1 to 52225|accessdate=2008-11-03 |deadurl=yes |archiveurl=https://web.archive.org/web/20051127063200/http://www.astrosurf.com/aude-old/map_files/AstVarMAP01-2003.htm |archivedate=2005-11-27 |df= }} [4][5][6][7]2. ^ 3. ^{{cite web |url=http://dorothy.as.arizona.edu/DSN/IRAS/index_iras.html |title=Infrared Astronomical Satellite (IRAS)|accessdate=2005-02-24 |deadurl=yes |archiveurl=https://web.archive.org/web/20050224095554/http://dorothy.as.arizona.edu/DSN/IRAS/index_iras.html |archivedate=2005-02-24 |df= }} 4. ^1 2 3 4 {{Citation | first1 = Donald K. | last1 = Yeomans | title = 160 Una | work = JPL Small-Body Database Browser | publisher = NASA Jet Propulsion Laboratory | url = http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=160 | accessdate= 12 May 2016 | postscript= .}} 5. ^1 {{Citation | last1 = Warner | first1 = Brian D. | title = Initial Results of a Dedicated H-G Project | work = The Minor Planet Bulletin | volume = 34 | pages = 113–119 |date=December 2007 | bibcode = 2007MPBu...34..113W | postscript= .}} 6. ^1 2 {{Citation | last1 = di Martino | first1 = M. | last2 = Blanco | first2 = C. | last3 = Riccioli | first3 = D. | last4 = de Sanctis | first4 = G. | display-authors = 1 | title = Lightcurves and rotational periods of nine main belt asteroids | work = Icarus | volume = 107 | issue = 2 | pages = 269–275 |date=February 1994 | doi = 10.1006/icar.1994.1022 | bibcode = 1994Icar..107..269D | postscript= .}} 7. ^1 {{Citation |last1=DeMeo |first1=Francesca E. |last2=Binzel |first2=Richard P. |last3=Slivan |first3=Stephen M. |last4=Bus |first4=Schelte J. |display-authors=1 |title=An extension of the Bus asteroid taxonomy into the near-infrared |work=Icarus |volume=202 |issue=1 |pages=160–180 |date=July 2009 |doi=10.1016/j.icarus.2009.02.005 |bibcode=2009Icar..202..160D |url=http://www.tara.tcd.ie/bitstream/2262/43276/1/PEER_stage2_10.1016%252Fj.icarus.2009.02.005.pdf |accessdate=2013-04-08 |postscript=. |deadurl=yes |archiveurl=https://web.archive.org/web/20140317200310/https://www.tara.tcd.ie/bitstream/2262/43276/1/PEER_stage2_10.1016/j.icarus.2009.02.005.pdf |archivedate=2014-03-17 |df=}} See appendix A. }} External links
8 : Background asteroids|Discoveries by Christian Peters|Minor planets named for fictional characters|Minor planets named from literature|Named minor planets|CX-type asteroids (Tholen)|C-type asteroids (SMASS)|Astronomical objects discovered in 1876 |
| 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。