+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100346 (1995 SA68) Classification: Main-belt Asteroid          SPK-ID: 2100346 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1488807151498617 6.9279e-08   a 2.717790351068053 2.0526e-08 au q 2.313163779973647 1.8441e-07 au i 27.10319710779308 7.4584e-06 deg node 173.980846704733 1.0056e-05 deg peri 188.834319483263 2.027e-05 deg M 220.6687082374134 2.1641e-05 deg tp 2459833.886085400614 (2022-Sep-11.38608540) 0.00010359 TDB period 1636.523912609335 4.48 1.8539e-05 5.076e-08 d yr n .2199784538595605 2.492e-09 deg/d Q 3.122416922162458 2.3582e-08 au   Orbit Determination Parameters    # obs. used (total)      441      data-arc span      9012 days (24.67 yr)      first obs. used      1995-09-18      last obs. used      2020-05-21      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57861      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:06:42   Additional Information  Earth MOID = 1.3097 au   Jupiter MOID = 2.3328 au   T_jup = 3.187  [ 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 15.38   n/a E2021B55   diameter diameter 3.187 km 0.715 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.145   0.091 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100346 (1995 SA68)          Discovered 1995-Sep-18 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1995 SA68 = 2003 HT22 = 2004 RD111  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-08 13:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin