+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101619 (1999 CG12) Classification: Main-belt Asteroid          SPK-ID: 2101619 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2043891738042098 4.0914e-08   a 2.423523432573365 1.0451e-08 au q 1.928181480494553 1.0138e-07 au i 26.06705430465839 5.7049e-06 deg node 158.5292588323215 9.6693e-06 deg peri 334.1655787664463 1.6297e-05 deg M 244.8442657655784 1.3152e-05 deg tp 2459441.310904849811 (2021-Aug-14.81090485) 5.1254e-05 TDB period 1378.063600574887 3.77 8.9139e-06 2.44e-08 d yr n .2612361286154128 1.6898e-09 deg/d Q 2.918865384652178 1.2587e-08 au   Orbit Determination Parameters    # obs. used (total)      1098      data-arc span      7948 days (21.76 yr)      first obs. used      1999-02-12      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53089      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:29:29   Additional Information  Earth MOID = .957875 au   Jupiter MOID = 2.14434 au   T_jup = 3.347  [ hide covariance matrix ] Orbital Elements at Epoch 2457635.5 (2016-Sep-04.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .203505111328956 4.0922e-08   q 1.931364430506683 1.0137e-07 au tp 2458062.615416330555 (2017-Nov-05.11541633) 4.9332e-05 TDB node 158.6017091791362 9.6644e-06 deg peri 334.0595885607479 1.637e-05 deg i 26.05824652155393 5.7066e-06 deg   Orbit Determination Parameters    # obs. used (total)      1098      data-arc span      7948 days (21.76 yr)      first obs. used      1999-02-12      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53089      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 22:29:29   Additional Information  Jupiter MOID = 2.14434 au   T_jup = 3.347  Orbit Covariance (6×6)   e q tp node peri i e 1.674583339493234E-15 -4.13483454083819E-15 6.793679062096197E-13 6.890745244099309E-15 2.332768667416842E-13 4.528659329890115E-15 q -4.13483454083819E-15 1.027569927911373E-14 -1.573189182858691E-12 -1.667397938640234E-14 -5.556051415990339E-13 -1.038969945357381E-14 tp 6.793679062096197E-13 -1.573189182858691E-12 2.433606307342639E-9 -7.371120651176524E-12 6.643057497400557E-10 5.881936038780685E-12 node 6.890745244099309E-15 -1.667397938640234E-14 -7.371120651176524E-12 9.340023790197985E-11 -8.509000954620135E-11 2.272700706327113E-11 peri 2.332768667416842E-13 -5.556051415990339E-13 6.643057497400557E-10 -8.509000954620135E-11 2.679741956585063E-10 -1.859480998967001E-11 i 4.528659329890115E-15 -1.038969945357381E-14 5.881936038780685E-12 2.272700706327113E-11 -1.859480998967001E-11 3.256473584416701E-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 14.8   n/a MPO240901   diameter diameter 2.506 km 0.063 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.407   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   101619 (1999 CG12)          Discovered 1999-Feb-12 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-25 02:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin