+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   5112 Kusaji (1987 SM13) Classification: Main-belt Asteroid          SPK-ID: 2005112 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1299707258128975 2.1209e-08   a 2.174803175059187 5.069e-09 au q 1.892142427896551 4.6849e-08 au i 5.763719352533778 8.2193e-07 deg node 62.68208189701525 2.8426e-06 deg peri 342.0242155039232 4.8107e-06 deg M 100.7398958556496 5.8677e-06 deg tp 2458872.686102580327 (2020-Jan-24.18610258) 1.8828e-05 TDB period 1171.462428750011 3.21 4.0957e-06 1.121e-08 d yr n .3073081911676262 1.0744e-09 deg/d Q 2.457463922221824 5.7279e-09 au   Orbit Determination Parameters    # obs. used (total)      2451      data-arc span      18053 days (49.43 yr)      first obs. used      1971-10-11      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .41899      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 17:09:31   Additional Information  Earth MOID = .901609 au   Jupiter MOID = 2.89854 au   T_jup = 3.668  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 13.96   n/a E2021B10   diameter diameter 3.419 km 0.132 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   rotation period rot_per 2.7995 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List: [Chiorny, V.; Pravec, P.; Romeuf, D.; Montaighut, R.; et al. (2016) CBET 4336.] geometric albedo albedo 0.500   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   5112 Kusaji (1987 SM13)          Discovered 1987-Sep-23 by Ueda and Kaneda at Kushiro Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1987 SM13 = 1971 TK1 = 1987 SL29 = 1990 OV1  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-22 03:57 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin