| 词条 | 244 Sita |
| 释义 |
| minorplanet=yes | background=#D6D6D6 | name=244 Sita | discoverer=Johann Palisa | discovered=14 October 1884 | mpc_name=(244) Sita | alt_names=A900 UA, 1957 KT, 1976 HY, {{mp|1979 FL|3}} | mp_category=main-belt | epoch=31 July 2016 (JD 2457600.5) | semimajor={{Convert|2.17424|AU|Gm|abbr=on}} | perihelion={{Convert|1.87531|AU|Gm|abbr=on}} | aphelion={{Convert|2.47317|AU|Gm|abbr=on|lk=on}} | eccentricity=0.13749 | period=3.21 yr (1171.0 d) | inclination=2.84423° | asc_node=208.982° | arg_peri=166.029° | mean_anomaly=46.3767° | mean_diameter ={{val|10.95|0.8|ul=km}} [1] 11 km [1] | mass=~2×1015 (estimate) | density=~2.7 g/cm³ (estimate) [2] | rotation={{Convert|129.51|h|d|abbr=on|lk=on}} | spectral_type=S [3] | abs_magnitude=11.9 | albedo={{val|0.1941|0.033}} [1] 0.194 [1] | mean_motion={{Deg2DMS|0.307427|sup=ms}} / day | orbit_ref= [4] | observation_arc=130.93 yr (47824 d) | uncertainty=0 }} Sita (minor planet designation: 244 Sita) is a background asteroid from the inner region of the asteroid belt, approximately {{convert|11|km|mi|abbr=off|sp=us}} in diameter. It was discovered on 14 October 1884, by an Austrian astronomer Johann Palisa in the Vienna Observatory. References1. ^1 {{cite web |url=http://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab |title=Supplemental IRAS Minor Planet Survey |archive-url=https://archive.is/20060623213811/http://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab |archive-date=June 23, 2006 }} 2. ^{{cite journal |author1= G. A. Krasinsky |author2= E. V. Pitjeva |author3= M. V. Vasilyev |author4=E. I. Yagudina |title= Hidden Mass in the Asteroid Belt| journal= Icarus| year= 2002| volume= 158| pages= 98| doi= 10.1006/icar.2002.6837| bibcode=2002Icar..158...98K | name-list-format=vanc }} 3. ^PDS spectral class data 4. ^1 2 {{Cite web |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=244;cad=1 |title=244 Sita |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=12 May 2016}} External links
7 : Background asteroids|Discoveries by Johann Palisa|Named minor planets|Slow rotating minor planets|S-type asteroids|Sa-type asteroids (SMASS)|Astronomical objects discovered in 1884 |
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