+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   13401 (1999 RA133) Classification: Main-belt Asteroid          SPK-ID: 2013401 [ 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 41 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2432220456913398 1.2977e-08   a 2.807565303118993 1.4655e-08 au q 2.124703526682365 4.1004e-08 au i 9.87650502416302 4.6728e-07 deg node 300.197658264194 1.4684e-06 deg peri 344.7883906252785 4.1e-06 deg M 223.2969135201731 7.1328e-06 deg tp 2459852.982767544503 (2022-Sep-30.48276754) 3.7095e-05 TDB period 1718.277197425855 4.70 1.3453e-05 3.683e-08 d yr n .209512179140429 1.6404e-09 deg/d Q 3.490427079555622 1.8219e-08 au   Orbit Determination Parameters    # obs. used (total)      2183      data-arc span      31976 days (87.55 yr)      first obs. used      1933-08-28      last obs. used      2021-03-15      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .41301      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 23:55:55   Additional Information  Earth MOID = 1.10813 au   Jupiter MOID = 1.71416 au   T_jup = 3.257  [ 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 13.07   n/a E2021B10   diameter diameter 9.970 km 0.201 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.135   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   13401 (1999 RA133)          Discovered 1999-Sep-09 by LINEAR at Socorro Reference: 20000124/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 RA133 = 1933 QG1 = 1985 RK1 = 1998 FN98  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-18 22:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin