+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101641 (1999 CU48) Classification: Main-belt Asteroid          SPK-ID: 2101641 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .16971273189527 3.2574e-08   a 2.601386488596449 9.3045e-09 au q 2.159898080901302 8.3464e-08 au i 3.316465266024591 3.2909e-06 deg node 77.29181025968032 7.4272e-05 deg peri 54.58882034780216 7.5485e-05 deg M 39.40316528688918 1.2736e-05 deg tp 2458832.760881312450 (2019-Dec-15.26088131) 5.4078e-05 TDB period 1532.518575293504 4.20 8.2222e-06 2.251e-08 d yr n .2349074300329794 1.2603e-09 deg/d Q 3.042874896291596 1.0884e-08 au   Orbit Determination Parameters    # obs. used (total)      1249      data-arc span      7819 days (21.41 yr)      first obs. used      1998-12-24      last obs. used      2020-05-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55304      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:59:21   Additional Information  Earth MOID = 1.17651 au   Jupiter MOID = 2.00752 au   T_jup = 3.392  [ hide covariance matrix ] Orbital Elements at Epoch 2457161.5 (2015-May-19.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1700541877285536 3.2751e-08   q 2.158847945915964 8.4051e-08 au tp 2457301.774734123008 (2015-Oct-06.27473412) 5.3118e-05 TDB node 77.32638199930739 7.4274e-05 deg peri 54.98177895357779 7.5469e-05 deg i 3.316624727099093 3.2906e-06 deg   Orbit Determination Parameters    # obs. used (total)      1249      data-arc span      7819 days (21.41 yr)      first obs. used      1998-12-24      last obs. used      2020-05-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55304      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:59:21   Additional Information  Jupiter MOID = 2.00752 au   T_jup = 3.392  Orbit Covariance (6×6)   e q tp node peri i e 1.072605898845757E-15 -2.741619958643857E-15 6.681477321102497E-13 6.359840268562529E-15 1.633374738516432E-13 -1.153955444579251E-15 q -2.741619958643857E-15 7.064648581000363E-15 -1.749717122662573E-12 -1.595562254610048E-14 -4.312085474206392E-13 3.063579614150277E-15 tp 6.681477321102497E-13 -1.749717122662573E-12 2.82149666681087E-9 1.144604001421721E-11 7.329711350446043E-10 -1.96022858952018E-12 node 6.359840268562529E-15 -1.595562254610048E-14 1.144604001421721E-11 5.516633437086182E-9 -5.504381368966349E-9 -4.872463782074647E-11 peri 1.633374738516432E-13 -4.312085474206392E-13 7.329711350446043E-10 -5.504381368966349E-9 5.695569383780898E-9 4.814010316906169E-11 i -1.153955444579251E-15 3.063579614150277E-15 -1.96022858952018E-12 -4.872463782074647E-11 4.814010316906169E-11 1.082786944102842E-11 [ 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 15.2   n/a MPO459475   101641 (1999 CU48)          Discovered 1999-Feb-10 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 CU48 = 2001 RY61  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-24 19:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin