+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   344903 (2004 RY144) Classification: Main-belt Asteroid          SPK-ID: 2344903 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1737990932211699 5.5633e-08   a 2.389366295407161 1.7553e-08 au q 1.974096599892171 1.2959e-07 au i 2.017990789764328 6.9386e-06 deg node 144.5520114624477 0.00016151 deg peri 138.5008333184191 0.00016307 deg M 137.6498424211061 2.342e-05 deg tp 2458484.682889298414 (2019-Jan-01.18288930) 8.5822e-05 TDB period 1349.032854570838 3.69 1.4865e-05 4.07e-08 d yr n .2668578446998056 2.9405e-09 deg/d Q 2.804635990922152 2.0603e-08 au   Orbit Determination Parameters    # obs. used (total)      190      data-arc span      5586 days (15.29 yr)      first obs. used      2004-07-16      last obs. used      2019-11-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56618      source      ORB      producer      Otto Matic      solution date      2019-Dec-04 22:57:44   Additional Information  Earth MOID = .9582 au   Jupiter MOID = 2.33923 au   T_jup = 3.512  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 17.2   n/a MPO440552   344903 (2004 RY144)          Discovered 2004-Sep-09 by LINEAR at Socorro Reference: 20121128/Numbers.arc Last Updated: 2012-12-03 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-12 13:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin