+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   920 Rogeria (A919 RC) Classification: Main-belt Asteroid          SPK-ID: 2000920 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1051464636373374 3.0443e-08   a 2.623414372533611 8.2782e-09 au q 2.347571628606338 7.9871e-08 au i 11.57650286617512 4.953e-06 deg node 192.786873686807 1.7104e-05 deg peri 268.9659070174986 2.9942e-05 deg M 162.2515994601513 2.4327e-05 deg tp 2458301.003971414251 (2018-Jul-01.50397141) 0.00010464 TDB period 1552.025194997944 4.25 7.3461e-06 2.011e-08 d yr n .2319549973545866 1.0979e-09 deg/d Q 2.899257116460884 9.1486e-09 au   Orbit Determination Parameters    # obs. used (total)      2778      data-arc span      36815 days (100.79 yr)      first obs. used      1919-09-01      last obs. used      2020-06-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .41751      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 15:22:47   Additional Information  Earth MOID = 1.39841 au   Jupiter MOID = 2.29288 au   T_jup = 3.367  [ 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 11.3   n/a MPO473775 IRAS observations used: 21 diameter diameter 26.656 km 0.168 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   rotation period rot_per 12.244 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List: [Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.] [Polakis, T. (2018) Minor Planet Bull. 45, 112-115.] geometric albedo albedo 0.076   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)   B-V BV 0.800   0.020 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.76 deg. U-B UB 0.300   0.032 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.76 deg. Tholen spectral type spec_T DTU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 2 color indices 920 Rogeria (A919 RC)          Discovered 1919-Sep-01 by Reinmuth, K. at Heidelberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ 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 1974-Feb-04 19:31 < 00:01 Juno 0.0443689094987042 0.0443666663022361 0.0443711527628945 3.69800593863413 3.6980058644861 2442083.313480666 0.425919278767047 146.907287280438 47.6151371742441 43.3521745339755 101059.953375133 T 32 CATAB v2.0f-lin.ifort 2020-Jun-23 15:23:00 2020-Jun-23 15:23 Alternate Designations  A919 RC = 1973 QC  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-11 15:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin