+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   134375 (1995 SP18) Classification: Outer Main-belt Asteroid          SPK-ID: 2134375 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1306631587368084 5.9557e-08   a 3.232740267455898 2.7332e-08 au q 2.810340212734435 1.9664e-07 au i 5.293084031443255 6.6247e-06 deg node 7.585207021946468 5.2376e-05 deg peri 310.7469662860101 5.6556e-05 deg M 133.0108972273279 2.2673e-05 deg tp 2458216.096778819398 (2018-Apr-07.59677882) 0.0001329 TDB period 2123.022741079586 5.81 2.6925e-05 7.372e-08 d yr n .1695695448918908 2.1505e-09 deg/d Q 3.65514032217736 3.0904e-08 au   Orbit Determination Parameters    # obs. used (total)      719      data-arc span      9782 days (26.78 yr)      first obs. used      1993-03-24      last obs. used      2020-01-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .58112      source      ORB      producer      Otto Matic      solution date      2020-Jan-29 18:23:51   Additional Information  Earth MOID = 1.80115 au   Jupiter MOID = 1.67664 au   T_jup = 3.166  [ 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 14.7   n/a MPO469409   diameter diameter 4.993 km 1.048 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.123   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   134375 (1995 SP18)          Discovered 1995-Sep-18 by Spacewatch at Kitt Peak Reference: 20060907/Numbers.arc Last Updated: 2006-09-10 [ show close-approach data ] Alternate Designations  1995 SP18 = 2001 TD97  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-26 19:44 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin