+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101912 (1999 RK10) Classification: Main-belt Asteroid          SPK-ID: 2101912 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2394870272929161 4.6925e-08   a 2.339831240005231 8.2654e-09 au q 1.779472011969281 1.1234e-07 au i 1.987298964500656 4.5405e-06 deg node 158.4808606383792 0.00010127 deg peri 189.685282700937 0.00010152 deg M 275.8514986310902 6.5985e-06 deg tp 2459306.075910624146 (2021-Apr-01.57591062) 2.4335e-05 TDB period 1307.299904753106 3.58 6.927e-06 1.897e-08 d yr n .2753767507295801 1.4591e-09 deg/d Q 2.900190468041182 1.0245e-08 au   Orbit Determination Parameters    # obs. used (total)      619      data-arc span      10126 days (27.72 yr)      first obs. used      1992-09-30      last obs. used      2020-06-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53071      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:57:49   Additional Information  Earth MOID = .772951 au   Jupiter MOID = 2.52654 au   T_jup = 3.525  [ hide covariance matrix ] Orbital Elements at Epoch 2457472.5 (2016-Mar-25.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2386779617736702 4.6912e-08   q 1.782334942053069 1.1221e-07 au tp 2457999.143812057228 (2017-Sep-02.64381206) 2.3649e-05 TDB node 158.4808494086784 0.00010127 deg peri 189.6932417047803 0.00010152 deg i 1.986806608120776 4.5399e-06 deg   Orbit Determination Parameters    # obs. used (total)      619      data-arc span      10126 days (27.72 yr)      first obs. used      1992-09-30      last obs. used      2020-06-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53071      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:57:49   Additional Information  Jupiter MOID = 2.52654 au   T_jup = 3.525  Orbit Covariance (6×6)   e q tp node peri i e 2.200696115761858E-15 -5.256691795717112E-15 3.476739790729024E-13 6.396482897725289E-15 1.47076557990483E-13 2.788529360322165E-16 q -5.256691795717112E-15 1.259081174194341E-14 -8.184881901242908E-13 -1.555732089334739E-14 -3.517817816499133E-13 -5.942645484033594E-16 tp 3.476739790729024E-13 -8.184881901242908E-13 5.592981427357677E-10 -1.195017483213706E-12 1.769783735631407E-10 3.17742213413104E-13 node 6.396482897725289E-15 -1.555732089334739E-14 -1.195017483213706E-12 1.025533592487425E-8 -1.024895301843161E-8 1.537976420754733E-10 peri 1.47076557990483E-13 -3.517817816499133E-13 1.769783735631407E-10 -1.024895301843161E-8 1.030648400507242E-8 -1.536131514850499E-10 i 2.788529360322165E-16 -5.942645484033594E-16 3.17742213413104E-13 1.537976420754733E-10 -1.536131514850499E-10 2.061031193268396E-11 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.5   n/a MPO436476   diameter diameter 1.141 km 0.196 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.341   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101912 (1999 RK10)          Discovered 1999-Sep-07 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-27 02:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin