+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   58947 (1998 QX52) Classification: Main-belt Asteroid          SPK-ID: 2058947 [ 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 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3170015170448507 6.8177e-08   a 2.54318148138917 1.3176e-08 au q 1.736989093668432 1.7559e-07 au i 12.58109228325616 6.5451e-06 deg node 191.4944667718961 3.6446e-05 deg peri 175.6519375249001 4.1091e-05 deg M 121.3367770074469 2.2347e-05 deg tp 2458501.208227380517 (2019-Jan-17.70822738) 8.8889e-05 TDB period 1481.373105303286 4.06 1.1512e-05 3.152e-08 d yr n .2430177777031373 1.8886e-09 deg/d Q 3.349373869109907 1.7353e-08 au   Orbit Determination Parameters    # obs. used (total)      358      data-arc span      10742 days (29.41 yr)      first obs. used      1990-10-24      last obs. used      2020-03-22      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5563      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:48:52   Additional Information  Earth MOID = .736461 au   Jupiter MOID = 2.11833 au   T_jup = 3.340  [ 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 MPO452969   diameter diameter 3.243 km 0.160 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.056   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   58947 (1998 QX52)          Discovered 1998-Aug-20 by LONEOS at Anderson Mesa Reference: 20030614/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1998 QX52 = 1990 UO9 = 2002 PP69  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 20:40 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin