+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   46270 (2001 HW62) Classification: Outer Main-belt Asteroid          SPK-ID: 2046270 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1292980247473671 5.2404e-08   a 3.221391617668998 1.8317e-08 au q 2.804872044566671 1.6762e-07 au i 1.906803458087668 4.1781e-06 deg node 68.68739335802286 0.00016231 deg peri 291.8986511481713 0.0001632 deg M 347.5109099971921 1.5091e-05 deg tp 2459073.764233088917 (2020-Aug-12.26423309) 8.8392e-05 TDB period 2111.8531379052 5.78 1.8012e-05 4.931e-08 d yr n .1704663991725736 1.4539e-09 deg/d Q 3.637911190771326 2.0685e-08 au   Orbit Determination Parameters    # obs. used (total)      1188      data-arc span      9772 days (26.75 yr)      first obs. used      1994-02-07      last obs. used      2020-11-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51351      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 03:47:46   Additional Information  Earth MOID = 1.80248 au   Jupiter MOID = 1.8125 au   T_jup = 3.175  [ 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 14.1   n/a MPO474335   diameter diameter 7.323 km 0.183 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.069   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   46270 (2001 HW62)          Discovered 2001-Apr-26 by LONEOS at Anderson Mesa Reference: 20020822/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  2001 HW62 = 1994 CU9 = 2000 EQ172  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-21 19:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin