| 词条 | 981 Martina |
| 释义 |
| minorplanet= yes | background= #D6D6D6 | name= 981 Martina | mpc_name= (981) Martina | alt_names= 1917 S92 | discoverer= Sergei Belyavsky | discovery_site= Simeis | discovered= 23 September 1917 | orbit_ref= [1] | observation_arc= 109.41 yr (39962 days) | uncertainty= 0 | epoch= 31 July 2016 (JD 2457600.5) | eccentricity= 0.20373 | semimajor= {{Convert|3.0947|AU|Gm|abbr=on}} | perihelion= {{Convert|2.4642|AU|Gm|abbr=on}} | aphelion= {{Convert|3.7252|AU|Gm|abbr=on|lk=on}} | period= 5.44 yr (1988.5 d) | inclination= 2.0657° | asc_node= 46.082° | arg_peri= 298.545° | mean_anomaly= 55.353° | mean_motion= {{Deg2DMS|0.18104|sup=ms}} / day | abs_magnitude= 10.57 | rotation= {{Convert|11.267|h|d|abbr=on|lk=on}} | albedo= {{val|0.1254|0.016}} | mean_radius= {{val|14.435|0.85}} km }} 981 Martina is a Themistian asteroid. References1. ^{{Cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=981;cad=1 |title=981 Martina (1917 S92) |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=2 May 2016}} External links
6 : Themis asteroids|Discoveries by Sergei Belyavsky|Minor planets named for people|Named minor planets|CFU:-type asteroids (Tholen)|Astronomical objects discovered in 1917 |
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