+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .100904460463242 1.2516e-05   a 41.65701308637237 0.00099883 au q 37.45363465638174 0.00039777 au i 27.04191003275826 3.4891e-05 deg node 21.01584535697246 4.5925e-05 deg peri 70.8563500186745 0.0071501 deg M 334.5907648720781 0.006561 deg tp 2465931.879989489427 (2039-May-23.37998949) 1.545 TDB period 98204.3254609478 268.87 3.5321 0.00967 d yr n .003665826309688962 1.3185e-07 deg/d Q 45.86039151636299 0.0010996 au   Orbit Determination Parameters    # obs. used (total)      283      data-arc span      13917 days (38.10 yr)      first obs. used      1982-09-16      last obs. used      2020-10-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      2      norm. resid. RMS      .47766      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 01:37:54   Additional Information  Earth MOID = 36.5671 au   Jupiter MOID = 32.8869 au   T_jup = 5.139  [ 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. 2019-August); 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 ] 2020-Nov-26 10:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin