| 词条 | 271 Penthesilea |
| 释义 |
| minorplanet=yes | background=#D6D6D6 | name=271 Penthesilea | discoverer=Viktor Knorre | discovered=13 October 1887 | mpc_name=(271) Penthesilea | alt_names= | named_after=Penthesilea | mp_category=Main belt | epoch=31 July 2016 (JD 2457600.5) | orbit_ref= | semimajor={{Convert|3.0035|AU|Gm|abbr=on}} | perihelion={{Convert|2.69235|AU|Gm|abbr=on}} | aphelion={{Convert|3.3147|AU|Gm|abbr=on|lk=on}} | eccentricity=0.10361 | period=5.21 yr (1901.3 d) | inclination=3.5395° | asc_node=335.367° | arg_peri=58.345° | mean_anomaly=243.905° | dimensions={{val|57.93|3.3|ul=km}} | mass= | density= | rotation={{Convert|18.787|h|d|abbr=on|lk=on}}[3] | spectral_type= | abs_magnitude=9.80 | albedo={{val|0.0633|0.008}} | single_temperature= | mean_motion={{Deg2DMS|0.18934|sup=ms}} / day | observation_arc=112.35 yr (41037 d) | uncertainty=0 }}Penthesilea (minor planet designation: 271 Penthesilea) is a large main belt asteroid that was discovered by Viktor Knorre on 13 October 1887 in Berlin. It was his last asteroid discovery. The asteroid was named after Penthesilea, the mythical Greek queen of the Amazons.[4]Photometric observations of this asteroid were made in early 2009 at the Organ Mesa Observatory in Las Cruces, New Mexico. The resulting light curve shows a synodic rotation period of 18.787 ± 0.001 hours with a brightness variation of 0.32 ± 0.04 in magnitude.[3] References1. ^1 {{Cite book |last=Schmadel |first=Lutz D.|authorlink=Lutz D. Schmadel|author2=International Astronomical Union |title=Dictionary of minor planet names |year=2003 |publisher=Springer-Verlag |location=Berlin; New York |isbn=978-3-540-00238-3 |page=39|url=https://books.google.com/books?id=KWrB1jPCa8AC&pg=PA39|accessdate=9 September 2011}} [1][2]2. ^1 2 {{Citation | first1 = Frederick | last1 = Pilcher | title = Rotation Period Determinations for 120 Lachesis, 131 Vala 157 Dejanira, and 271 Penthesilea | work = The Minor Planet Bulletin | volume = 36 | issue = 3 | pages = 100–102 |date=July 2009 | bibcode = 2009MPBu...36..100P | postscript= .}} }} External links
6 : Background asteroids|Discoveries by Viktor Knorre|Minor planets named from Greek mythology|Named minor planets|PC-type asteroids (Tholen)|Astronomical objects discovered in 1887 |
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