+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11590 (1994 WH3) Classification: Main-belt Asteroid          SPK-ID: 2011590 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1760419441450937 4.1865e-08   a 3.154330547369583 1.633e-08 au q 2.599036065334384 1.3467e-07 au i 1.968690756863821 3.4892e-06 deg node 111.369421362312 0.00013035 deg peri 259.7687610792887 0.0001307 deg M 238.6846948180472 1.2205e-05 deg tp 2459690.060417381800 (2022-Apr-20.56041738) 7.218e-05 TDB period 2046.252530833818 5.60 1.589e-05 4.35e-08 d yr n .1759313645678451 1.3662e-09 deg/d Q 3.709625029404783 1.9204e-08 au   Orbit Determination Parameters    # obs. used (total)      2077      data-arc span      13820 days (37.84 yr)      first obs. used      1982-08-14      last obs. used      2020-06-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48922      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 17:17:27   Additional Information  Earth MOID = 1.5999 au   Jupiter MOID = 1.75392 au   T_jup = 3.182  [ 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 13.0   n/a MPO319230   diameter diameter 15.359 km 0.097 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.040   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   11590 (1994 WH3)          Discovered 1994-Nov-28 by Ueda, S., Kaneda, H. at Kushiro Reference: 19990928/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1994 WH3 = 1982 PN = 1988 TQ2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-29 20:53 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin