+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   134463 (1998 SG169) Classification: Main-belt Asteroid          SPK-ID: 2134463 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2201151441664493 4.7821e-08   a 2.572901162083252 1.2827e-08 au q 2.006566651865272 1.2773e-07 au i 6.158132860810815 5.5229e-06 deg node 110.9133450292681 3.98e-05 deg peri 198.1956421755942 4.1456e-05 deg M 135.6870726952261 1.3285e-05 deg tp 2458432.342094546489 (2018-Nov-09.84209455) 5.318e-05 TDB period 1507.415864315129 4.13 1.1273e-05 3.086e-08 d yr n .2388192989885777 1.786e-09 deg/d Q 3.139235672301231 1.5651e-08 au   Orbit Determination Parameters    # obs. used (total)      391      data-arc span      7804 days (21.37 yr)      first obs. used      1998-09-19      last obs. used      2020-01-31      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58693      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 07:29:24   Additional Information  Earth MOID = .992909 au   Jupiter MOID = 2.13256 au   T_jup = 3.386  [ 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 15.9   n/a MPO449758   diameter diameter 1.748 km 0.378 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.230   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   134463 (1998 SG169)          Discovered 1998-Sep-22 by LONEOS at Anderson Mesa Reference: 20060907/Numbers.arc Last Updated: 2006-09-10 [ show close-approach data ] Alternate Designations  1998 SG169 = 2002 TM126  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-28 03:27 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin