+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   103857 (2000 DG39) Classification: Main-belt Asteroid          SPK-ID: 2103857 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07896836050843076 5.507e-08   a 2.663545252641672 1.579e-08 au q 2.453209450900545 1.5212e-07 au i 2.410707320968833 5.1936e-06 deg node 225.1660539093731 0.00012173 deg peri 278.9341744152865 0.0001261 deg M 292.9871836782615 3.4318e-05 deg tp 2459496.058814473377 (2021-Oct-08.55881447) 0.00015219 TDB period 1587.77348947055 4.35 1.4119e-05 3.866e-08 d yr n .2267325927705491 2.0162e-09 deg/d Q 2.873881054382799 1.7037e-08 au   Orbit Determination Parameters    # obs. used (total)      354      data-arc span      9991 days (27.35 yr)      first obs. used      1993-09-09      last obs. used      2021-01-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .59162      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:48:54   Additional Information  Earth MOID = 1.46666 au   Jupiter MOID = 2.13218 au   T_jup = 3.379  [ hide covariance matrix ] Orbital Elements at Epoch 2457542.5 (2016-Jun-03.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07719627943545318 5.5214e-08   q 2.458282649658587 1.5224e-07 au tp 2457909.853306917664 (2017-Jun-05.35330692) 0.00015151 TDB node 225.1804008172749 0.00012175 deg peri 279.3455860254397 0.0001263 deg i 2.409285826179881 5.1962e-06 deg   Orbit Determination Parameters    # obs. used (total)      354      data-arc span      9991 days (27.35 yr)      first obs. used      1993-09-09      last obs. used      2021-01-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .59162      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:48:54   Additional Information  Jupiter MOID = 2.13218 au   T_jup = 3.379  Orbit Covariance (6×6)   e q tp node peri i e 3.048635955040298E-15 -8.370890346223929E-15 -4.733582729022887E-13 1.291326648649514E-14 1.502672636459255E-14 1.141225538107535E-16 q -8.370890346223929E-15 2.31756358242023E-14 1.766862280653129E-12 -3.814240570704924E-14 5.238022690218286E-14 -1.989451671056488E-16 tp -4.733582729022887E-13 1.766862280653129E-12 2.2955901138148E-8 -3.433235287430768E-11 5.107646947652988E-9 1.435299918967338E-12 node 1.291326648649514E-14 -3.814240570704924E-14 -3.433235287430768E-11 1.482276692541166E-8 -1.481649984462997E-8 -9.839913481119647E-11 peri 1.502672636459255E-14 5.238022690218286E-14 5.107646947652988E-9 -1.481649984462997E-8 1.595144545064674E-8 9.860401990104765E-11 i 1.141225538107535E-16 -1.989451671056488E-16 1.435299918967338E-12 -9.839913481119647E-11 9.860401990104765E-11 2.700029581075628E-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 16.0   n/a MPO449627   diameter diameter 3.663 km 1.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.048   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   103857 (2000 DG39)          Discovered 2000-Feb-29 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-Apr-16 19:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin