+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   146472 (2001 RO79) Classification: Main-belt Asteroid          SPK-ID: 2146472 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1901594815383043 6.3049e-08   a 2.811233284899103 1.4753e-08 au q 2.276650620959465 1.8049e-07 au i 9.045602029593498 6.2237e-06 deg node 49.10242167701504 3.1699e-05 deg peri 355.6022892233161 3.6147e-05 deg M 342.0082141877178 1.532e-05 deg tp 2459086.542996730289 (2020-Aug-25.04299673) 7.3506e-05 TDB period 1721.645596834441 4.71 1.3552e-05 3.71e-08 d yr n .2091022685864765 1.646e-09 deg/d Q 3.34581594883874 1.7558e-08 au   Orbit Determination Parameters    # obs. used (total)      581      data-arc span      6989 days (19.13 yr)      first obs. used      2001-09-10      last obs. used      2020-10-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .60024      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 14:27:29   Additional Information  Earth MOID = 1.28615 au   Jupiter MOID = 2.06089 au   T_jup = 3.276  [ 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 15.3   n/a MPO345203   diameter diameter 4.845 km 0.214 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.082   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   146472 (2001 RO79)          Discovered 2001-Sep-10 by LINEAR at Socorro Reference: 20070106/Numbers.arc Last Updated: 2007-01-09 [ 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 2018-Jan-10 19:27 00:01 Psych 0.0257437854349832 0.0257428420646047 0.0257447288053609 2.98024706764439 2.98024690994555 2458129.310517777 1.27387540311242 119.80335499153 46.9673698351666 -89.9498870832771 81863.2925140309 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 14:27:30 2020-Nov-12 14:27 2077-Aug-12 21:22 00:08 Amphi 0.0476429509729186 0.047619216837413 0.0476666854620433 3.00824092514633 3.00824088503549 2479893.390063067 8.09469202711421 1199.77893292319 41.3140664438893 9.78484328142155 29868.141898168 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 14:27:30 2020-Nov-12 14:27 2138-Nov-19 21:17 00:16 Amphi 0.0285103197407208 0.0284821715605513 0.028538505838947 3.13673941592512 3.13673935164266 2502271.387103770 15.5418533290746 2157.57278094827 43.6077331783979 49.4418077809227 74254.9916560987 T 17 CATAB v2.0f-lin.ifort 2020-Nov-12 14:27:30 2020-Nov-12 14:27 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-16 16:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin