+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2201151729990131 4.7446e-08   a 2.573017351981689 1.2831e-08 au q 2.006657192420777 1.2681e-07 au i 6.158000845633595 5.3739e-06 deg node 110.9130290700193 3.8133e-05 deg peri 198.2310064993503 3.9707e-05 deg M 183.3964873744234 1.3214e-05 deg tp 2459940.036027414440 (2022-Dec-26.53602741) 5.9013e-05 TDB period 1507.517975781424 4.13 1.1277e-05 3.087e-08 d yr n .2388031226051508 1.7863e-09 deg/d Q 3.139377511542602 1.5655e-08 au   Orbit Determination Parameters    # obs. used (total)      423      data-arc span      8189 days (22.42 yr)      first obs. used      1998-09-19      last obs. used      2021-02-19      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .57468      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 18:08:29   Additional Information  Earth MOID = .991015 au   Jupiter MOID = 2.13227 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 15.97   n/a E2021B55   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 ] 2021-Apr-16 11:25 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin