+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   26103 (1990 SC3) Classification: Main-belt Asteroid          SPK-ID: 2026103 [ 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 27 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1814748699161819 3.9464e-08   a 2.42614831256657 6.7528e-09 au q 1.985863363146187 9.5884e-08 au i 4.639740877819278 4.18e-06 deg node 124.3558470081396 3.6365e-05 deg peri 188.5958083860244 3.755e-05 deg M 39.47878939629498 7.7789e-06 deg tp 2459049.131407721340 (2020-Jul-18.63140772) 2.9987e-05 TDB period 1380.303045093667 3.78 5.7628e-06 1.578e-08 d yr n .2608122913874834 1.0889e-09 deg/d Q 2.866433261986952 7.9783e-09 au   Orbit Determination Parameters    # obs. used (total)      1638      data-arc span      16512 days (45.21 yr)      first obs. used      1975-10-30      last obs. used      2021-01-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .4922      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 03:17:42   Additional Information  Earth MOID = .969886 au   Jupiter MOID = 2.40753 au   T_jup = 3.483  [ 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 14.93   n/a E2020-QM5   diameter diameter 6.295 km 0.299 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.045   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   26103 (1990 SC3)          Discovered 1990-Sep-18 by Holt, H. E. at Palomar Reference: 20010705/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1990 SC3 = 1975 UO = 1996 DF4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Feb-27 20:08 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin