+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1759587607148775 3.8694e-08   a 3.158833826265162 1.5407e-08 au q 2.603009340891309 1.2704e-07 au i 1.968680717507706 3.3781e-06 deg node 111.3683012669847 0.00011964 deg peri 259.2950392949955 0.00011999 deg M 308.7646550818078 1.1573e-05 deg tp 2459688.347354099402 (2022-Apr-18.84735410) 6.6971e-05 TDB period 2050.636092009194 5.61 1.5003e-05 4.108e-08 d yr n .175555283262022 1.2844e-09 deg/d Q 3.714658311639014 1.8118e-08 au   Orbit Determination Parameters    # obs. used (total)      2240      data-arc span      14194 days (38.86 yr)      first obs. used      1982-08-14      last obs. used      2021-06-24      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48202      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 02:44:44   Additional Information  Earth MOID = 1.60293 au   Jupiter MOID = 1.7506 au   T_jup = 3.180  [ 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-Aug-02 05:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin