+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   243126 (2007 RU245) Classification: Main-belt Asteroid          SPK-ID: 2243126 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1101397589251964 5.8811e-08   a 3.099441056873016 3.726e-08 au q 2.758069366066167 1.8462e-07 au i 17.12589421052071 8.1524e-06 deg node 158.8843672641353 1.665e-05 deg peri 236.6107614949864 3.8438e-05 deg M 120.4163676776765 3.1956e-05 deg tp 2458533.836740645868 (2019-Feb-19.33674065) 0.00017814 TDB period 1993.074346918537 5.46 3.594e-05 9.84e-08 d yr n .1806254746876807 3.2571e-09 deg/d Q 3.440812747679866 4.1364e-08 au   Orbit Determination Parameters    # obs. used (total)      291      data-arc span      7552 days (20.68 yr)      first obs. used      2000-05-10      last obs. used      2021-01-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61892      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 13:37:19   Additional Information  Earth MOID = 1.79836 au   Jupiter MOID = 2.09926 au   T_jup = 3.145  [ 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 15.4   n/a MPO454783   diameter diameter 5.090 km 0.410 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.047   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   243126 (2007 RU245)          Discovered 2007-Sep-12 by CSS at Catalina 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 2177-Jun-15 09:13 00:06 David 0.0439093695799404 0.0438525052377064 0.0439662914736686 5.20062819379375 5.20062812763763 2516358.884240086 6.14127709503261 3784.18842187801 64.5881394171318 -41.4776545955824 67335.6460673528 T 17 CATAB v2.0f-lin.ifort 2021-Feb-24 13:37:20 2021-Feb-24 13:37 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-08 14:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin