+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   226744 (2004 RA19) Classification: Main-belt Asteroid          SPK-ID: 2226744 [ 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 .1321367202769739 3.9243e-08   a 2.735982620551673 1.9407e-08 au q 2.374458850337175 1.0286e-07 au i 6.061709069940235 4.9495e-06 deg node 228.7333604562026 5.0836e-05 deg peri 195.8250594947793 5.5571e-05 deg M 104.617211336176 2.1873e-05 deg tp 2458520.137532567043 (2019-Feb-05.63753257) 0.00010024 TDB period 1652.983157046417 4.53 1.7587e-05 4.815e-08 d yr n .217788063033416 2.3172e-09 deg/d Q 3.097506390766172 2.1971e-08 au   Orbit Determination Parameters    # obs. used (total)      390      data-arc span      7096 days (19.43 yr)      first obs. used      2000-11-21      last obs. used      2020-04-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54759      source      ORB      producer      Otto Matic      solution date      2020-May-21 10:29:15   Additional Information  Earth MOID = 1.38838 au   Jupiter MOID = 2.21295 au   T_jup = 3.331  [ 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 16.2   n/a MPO268233   diameter diameter 2.317 km 0.448 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.131   0.061 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   226744 (2004 RA19)          Discovered 2004-Sep-07 by Goodricke-Pigott at Goodricke-Pigott Reference: 20091202/Numbers.arc Last Updated: 2009-12-04 [ show close-approach data ] Alternate Designations  2004 RA19 = 2000 WV197  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-10 17:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin