+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100256 (1994 SU5) Classification: Main-belt Asteroid          SPK-ID: 2100256 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1045137619696686 4.9713e-08   a 3.014039801702735 2.4814e-08 au q 2.699031163300468 1.5844e-07 au i 6.568272088952015 5.9634e-06 deg node 179.8918706697565 4.2655e-05 deg peri 160.5539451521059 5.3673e-05 deg M 349.9266182799287 3.0907e-05 deg tp 2459053.980405570218 (2020-Jul-23.48040557) 0.00016409 TDB period 1911.269377086808 5.23 2.3603e-05 6.462e-08 d yr n .1883564945453783 2.3261e-09 deg/d Q 3.329048440105002 2.7408e-08 au   Orbit Determination Parameters    # obs. used (total)      459      data-arc span      9091 days (24.89 yr)      first obs. used      1994-09-28      last obs. used      2019-08-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .54861      source      ORB      producer      Otto Matic      solution date      2020-Feb-24 01:02:53   Additional Information  Earth MOID = 1.69188 au   Jupiter MOID = 2.07679 au   T_jup = 3.230  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.5   n/a MPO439688   diameter diameter 3.660 km 0.553 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.083   0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   100256 (1994 SU5)          Discovered 1994-Sep-28 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 Alternate Designations  1994 SU5 = 2003 KX30 = 2004 NW29  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Jul-07 07:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin