+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1041734379545093 4.828e-08   a 3.012938641653946 2.0411e-08 au q 2.699070465006865 1.5359e-07 au i 6.569394697903967 5.2022e-06 deg node 179.8893702925624 3.1104e-05 deg peri 160.5988738677515 4.4023e-05 deg M 27.57993196508643 2.7507e-05 deg tp 2459054.156125921553 (2020-Jul-23.65612592) 0.00014645 TDB period 1910.222067803992 5.23 1.9411e-05 5.314e-08 d yr n .1884597639550145 1.915e-09 deg/d Q 3.326806818301027 2.2537e-08 au   Orbit Determination Parameters    # obs. used (total)      596      data-arc span      9597 days (26.28 yr)      first obs. used      1994-09-28      last obs. used      2021-01-06      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .52572      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:31:20   Additional Information  Earth MOID = 1.69008 au   Jupiter MOID = 2.07882 au   T_jup = 3.231  [ 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 15.67   n/a E2021B55   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 ] 2021-Apr-14 15:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin