+ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1009129787210758 3.0233e-05   a 41.65798497868301 0.0027247 au q 37.45415362696627 0.0012432 au i 27.04195626505028 5.4252e-05 deg node 21.01588854684174 5.7318e-05 deg peri 70.84816977435469 0.02146 deg M 334.5979410843547 0.01933 deg tp 2465930.164897111702 (2039-May-21.66489711) 4.6001 TDB period 98207.76226228368 268.88 9.6351 0.02638 d yr n .003665698023324747 3.5964e-07 deg/d Q 45.86181633039975 0.0029997 au   Orbit Determination Parameters    # obs. used (total)      178      data-arc span      13146 days (35.99 yr)      first obs. used      1982-09-16      last obs. used      2018-09-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      3      norm. resid. RMS      .51526      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 00:39:47   Additional Information  Earth MOID = 36.5676 au   Jupiter MOID = 32.8874 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-Sep-26 09:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin