+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1759540024706412 4.0688e-08   a 3.155860408820524 1.6029e-08 au q 2.600574138649919 1.3169e-07 au i 1.968753895111373 3.3812e-06 deg node 111.3681710217797 0.00012686 deg peri 259.6068478703642 0.00012721 deg M 274.0370238065745 1.2338e-05 deg tp 2459689.472063096069 (2022-Apr-19.97206310) 7.2181e-05 TDB period 2047.741370872264 5.61 1.5601e-05 4.271e-08 d yr n .1758034511197344 1.3394e-09 deg/d Q 3.711146678991129 1.8849e-08 au   Orbit Determination Parameters    # obs. used (total)      2151      data-arc span      13888 days (38.02 yr)      first obs. used      1982-08-14      last obs. used      2020-08-22      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48631      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 22:51:55   Additional Information  Earth MOID = 1.59991 au   Jupiter MOID = 1.75344 au   T_jup = 3.181  [ 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 13.06   n/a E2021B10   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 ] 2021-Apr-16 17:01 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin