+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   49133 (1998 SC25) Classification: Main-belt Asteroid          SPK-ID: 2049133 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08623487455930523 4.3231e-08   a 2.231290705539036 7.2898e-09 au q 2.038875631441533 9.7947e-08 au i 6.365026622265861 4.2973e-06 deg node 37.04533546653024 2.847e-05 deg peri 174.1478592336607 3.4132e-05 deg M 338.8907848669676 1.85e-05 deg tp 2459071.884224641033 (2020-Aug-10.38422464) 6.2552e-05 TDB period 1217.398217262863 3.33 5.966e-06 1.633e-08 d yr n .2957126065203266 1.4492e-09 deg/d Q 2.423705779636538 7.9185e-09 au   Orbit Determination Parameters    # obs. used (total)      1765      data-arc span      7933 days (21.72 yr)      first obs. used      1998-09-18      last obs. used      2020-06-07      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4589      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 23:34:09   Additional Information  Earth MOID = 1.03288 au   Jupiter MOID = 2.53691 au   T_jup = 3.629  [ 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 14.9   n/a MPO459186   diameter diameter 2.743 km 0.113 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.339   0.042 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   49133 (1998 SC25)          Discovered 1998-Sep-19 by LONEOS at Anderson Mesa Reference: 20021120/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 SC25 = 2000 AN239  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 04:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin