+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   243103 (2007 RL50) Classification: Main-belt Asteroid          SPK-ID: 2243103 [ 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 16 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .05511299800646155 5.024e-08   a 2.740979574431283 2.312e-08 au q 2.5899159726099 1.3443e-07 au i 6.479512358448056 5.3557e-06 deg node 288.9270392842946 4.0144e-05 deg peri 187.742437904938 6.4803e-05 deg M 181.4957015867273 5.42e-05 deg tp 2459822.370331795192 (2022-Aug-30.87033180) 0.00025596 TDB period 1657.513696175897 4.54 2.0971e-05 5.742e-08 d yr n .2171927754386389 2.748e-09 deg/d Q 2.892043176252666 2.4394e-08 au   Orbit Determination Parameters    # obs. used (total)      371      data-arc span      7564 days (20.71 yr)      first obs. used      2000-02-03      last obs. used      2020-10-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52283      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 00:58:37   Additional Information  Earth MOID = 1.60641 au   Jupiter MOID = 2.17876 au   T_jup = 3.338  [ 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 15.9   n/a MPO437135   diameter diameter 3.208 km 0.728 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.075   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   243103 (2007 RL50)          Discovered 2007-Sep-09 by Spacewatch at Kitt Peak Reference: 20100626/Numbers.arc Last Updated: 2010-06-28 [ 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 2118-Jul-01 11:44 00:10 Iris 0.0312051731934574 0.0311815988372026 0.0312287640684804 3.47869542720485 3.47869537424704 2494824.988891944 10.4043543905546 1632.49875251424 62.0786837332357 43.9922073766028 52231.6989269009 T 16 CATAB v2.0f-lin.ifort 2020-Nov-12 00:58:38 2020-Nov-12 00:58 Alternate Designations  2007 RL50 = 2003 WC121  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-26 22:20 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin