+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   452144 (2015 RL19) Classification: Main-belt Asteroid          SPK-ID: 2452144 [ 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 12 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .255034604018618 1.4954e-07   a 2.28517596455886 1.8592e-08 au q 1.702377017324728 3.3701e-07 au i 5.772890174604232 9.1912e-06 deg node 52.0587522895986 6.5558e-05 deg peri 325.3493293577314 6.9172e-05 deg M 123.9036003137908 1.6003e-05 deg tp 2458566.230505291279 (2019-Mar-23.73050529) 5.4729e-05 TDB period 1261.763320026292 3.45 1.5399e-05 4.216e-08 d yr n .2853149986896897 3.482e-09 deg/d Q 2.867974911792992 2.3334e-08 au   Orbit Determination Parameters    # obs. used (total)      166      data-arc span      15454 days (42.31 yr)      first obs. used      1977-10-11      last obs. used      2020-02-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57725      source      ORB      producer      Otto Matic      solution date      2020-Feb-26 11:33:40   Additional Information  Earth MOID = .708473 au   Jupiter MOID = 2.59652 au   T_jup = 3.552  [ 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 18.2   n/a MPO361089   452144 (2015 RL19)          Discovered 1977-Oct-11 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar Reference: Last Updated: 2015-11-30 Alternate Designations  2015 RL19 = 2008 RC1 = 4294 T-3  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Aug-10 20:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin