+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   226802 (2004 RF209) Classification: Main-belt Asteroid          SPK-ID: 2226802 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1663926251450551 4.777e-08   a 2.807734964563355 2.3231e-08 au q 2.340548573098101 1.3848e-07 au i 11.55909223441225 4.5387e-06 deg node 249.0074718643984 2.6026e-05 deg peri 94.55924067521785 2.9509e-05 deg M 122.9171733949434 1.3733e-05 deg tp 2458413.764107543889 (2018-Oct-22.26410754) 6.4526e-05 TDB period 1718.43295326615 4.70 2.1328e-05 5.839e-08 d yr n .2094931893128352 2.6001e-09 deg/d Q 3.274921356028611 2.7097e-08 au   Orbit Determination Parameters    # obs. used (total)      445      data-arc span      7506 days (20.55 yr)      first obs. used      1999-07-13      last obs. used      2020-01-30      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49277      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 05:58:26   Additional Information  Earth MOID = 1.36817 au   Jupiter MOID = 2.25596 au   T_jup = 3.273  [ 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 MPO450051   diameter diameter 2.643 km 0.300 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.253   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   226802 (2004 RF209)          Discovered 2004-Sep-11 by LINEAR at Socorro Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ show close-approach data ] Alternate Designations  2004 RF209 = 1999 NU62  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-14 23:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin