+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   134309 (4552 P-L) Classification: Main-belt Asteroid          SPK-ID: 2134309 [ 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 .1889732433671657 5.9002e-08   a 2.650514234157443 1.7233e-08 au q 2.149637962737871 1.5708e-07 au i 13.55964344554507 6.1972e-06 deg node 10.86180841596159 2.0002e-05 deg peri 335.5208197963096 2.3476e-05 deg M 312.6801612818978 1.4403e-05 deg tp 2459207.673590662238 (2020-Dec-24.17359066) 6.4113e-05 TDB period 1576.135816580333 4.32 1.5372e-05 4.209e-08 d yr n .2284067122978494 2.2276e-09 deg/d Q 3.151390505577013 2.049e-08 au   Orbit Determination Parameters    # obs. used (total)      283      data-arc span      21413 days (58.63 yr)      first obs. used      1960-09-24      last obs. used      2019-05-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .64239      source      ORB      producer      Otto Matic      solution date      2019-May-30 07:11:10   Additional Information  Earth MOID = 1.15132 au   Jupiter MOID = 2.3047 au   T_jup = 3.326  [ 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 16.0   n/a MPO436656   134309 (4552 P-L)          Discovered 1960-Sep-24 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar Reference: 20060711/Numbers.arc Last Updated: 2006-07-17 Alternate Designations  4552 P-L = 2003 RH12  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-26 16:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin