+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102055 (1999 RH126) Classification: Main-belt Asteroid          SPK-ID: 2102055 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1847608811871624 3.7779e-08   a 2.260365162072509 8.0439e-09 au q 1.842738102923229 8.517e-08 au i 5.717947991902877 5.0851e-06 deg node 302.995005954486 3.8069e-05 deg peri 78.05849511849851 4.1614e-05 deg M 63.84089109398235 1.5007e-05 deg tp 2458980.378342657935 (2020-May-10.87834266) 5.1365e-05 TDB period 1241.270215456201 3.40 6.6259e-06 1.814e-08 d yr n .2900254880180863 1.5482e-09 deg/d Q 2.677992221221789 9.5301e-09 au   Orbit Determination Parameters    # obs. used (total)      1116      data-arc span      7823 days (21.42 yr)      first obs. used      1999-08-22      last obs. used      2021-01-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4936      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:30:27   Additional Information  Earth MOID = .854089 au   Jupiter MOID = 2.81841 au   T_jup = 3.591  [ 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 15.29   n/a E2021B55   diameter diameter 2.887 km 0.615 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   geometric albedo albedo 0.164   0.085 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)   102055 (1999 RH126)          Discovered 1999-Sep-09 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 2140-Aug-22 12:01 00:01 Iris 0.0494171802481367 0.0494139283270671 0.0494204389533403 2.15573230739117 2.15573225342765 2502913.000747154 1.06329101173993 977.837659113787 53.1199443118777 81.0126087999548 137210.670529831 T 25 CATAB v2.0f-lin.ifort 2021-Feb-24 08:30:29 2021-Feb-24 08:30 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-13 07:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin