+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100269 (1994 UM6) Classification: Main-belt Asteroid          SPK-ID: 2100269 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2104155703916796 4.5775e-08   a 3.128716507004596 1.7716e-08 au q 2.47038583858936 1.4628e-07 au i 11.13305813100154 5.8082e-06 deg node 16.46466871375626 1.9539e-05 deg peri 232.4747026623002 2.3258e-05 deg M 22.21251353554197 1.071e-05 deg tp 2459075.778032915815 (2020-Aug-14.27803292) 6.0304e-05 TDB period 2021.378988850719 5.53 1.7168e-05 4.7e-08 d yr n .1780962412222769 1.5126e-09 deg/d Q 3.787047175419832 2.1443e-08 au   Orbit Determination Parameters    # obs. used (total)      811      data-arc span      10330 days (28.28 yr)      first obs. used      1992-04-09      last obs. used      2020-07-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55788      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:07:05   Additional Information  Earth MOID = 1.47483 au   Jupiter MOID = 1.37162 au   T_jup = 3.151  [ 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 14.51   n/a E2021B55   diameter diameter 7.229 km 0.124 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.064   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100269 (1994 UM6)          Discovered 1994-Oct-28 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1994 UM6 = 2003 EG28  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-09 04:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin