+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   101716 (1999 DJ6) Classification: Main-belt Asteroid          SPK-ID: 2101716 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1128769095774945 4.1285e-08   a 2.57827381221053 1.2459e-08 au q 2.28724623224362 1.1049e-07 au i 12.10595524357888 4.7824e-06 deg node 326.1584619661705 1.6692e-05 deg peri 34.91948160825059 2.5011e-05 deg M 196.4513673926609 2.068e-05 deg tp 2459687.467829627965 (2022-Apr-17.96782963) 8.9429e-05 TDB period 1512.139934913585 4.14 1.0961e-05 3.001e-08 d yr n .2380732045282391 1.7257e-09 deg/d Q 2.86930139217744 1.3866e-08 au   Orbit Determination Parameters    # obs. used (total)      1520      data-arc span      7799 days (21.35 yr)      first obs. used      1999-01-15      last obs. used      2020-05-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49115      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:58:53   Additional Information  Earth MOID = 1.29217 au   Jupiter MOID = 2.56837 au   T_jup = 3.386  [ 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 14.0   n/a MPO337994   diameter diameter 12.543 km 3.247 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.031   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   101716 (1999 DJ6)          Discovered 1999-Feb-18 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2197-Jun-04 13:55 < 00:01 Ceres 0.0440533059375267 0.0440490958805156 0.0440575598962678 6.83646729174897 6.83646588899513 2523653.080029882 0.426346117232351 2221.02264708432 31.0811639909929 -84.6161882951201 210484.478587213 T 31 CATAB v2.0f-lin.ifort 2020-Nov-12 19:58:56 2020-Nov-12 19:58 Alternate Designations  1999 DJ6 = 2001 OP103  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-16 14:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin