+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   24835 (1995 SM55) Classification: TransNeptunian Object          SPK-ID: 2024835 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1019018633217108 1.2736e-05   a 41.7174090253213 0.0010101 au q 37.46632731268711 0.00039391 au i 27.02619994928454 3.3943e-05 deg node 20.9865616779419 4.5082e-05 deg peri 70.32756785516537 0.0070446 deg M 335.8356344416941 0.0064354 deg tp 2465806.633022918442 (2039-Jan-18.13302292) 1.5234 TDB period 98417.97346229914 269.45 3.5743 0.009786 d yr n .003657868449586648 1.3285e-07 deg/d Q 45.9684907379555 0.001113 au   Orbit Determination Parameters    # obs. used (total)      289      data-arc span      14004 days (38.34 yr)      first obs. used      1982-09-16      last obs. used      2021-01-18      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      2      norm. resid. RMS      .47373      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 04:49:55   Additional Information  Earth MOID = 36.5787 au   Jupiter MOID = 32.898 au   T_jup = 5.143  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 4.6   n/a MPO384963   rotation period rot_per 8.08 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Sheppard, S.S.; Jewitt, D.C. (2003) Earth, Moon, and Planets 92, 207-219.] [Thirouin, A.; Sheppard, S.S.; Noll, K.S.; Moskovitz, N.A.; et al. (2016) Astron. J. 151, A148.] 24835 (1995 SM55)          Discovered 1995-Sep-19 by Danzl, N. at Steward Reference: 20010606/Numbers.arc Last Updated: 2004-04-19 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2021-Apr-22 12:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin