+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   160564 (1998 SL88) Classification: Main-belt Asteroid          SPK-ID: 2160564 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09282233369071076 4.9336e-08   a 2.75154876754146 2.047e-08 au q 2.496143589674463 1.4519e-07 au i 2.647407378498129 4.5161e-06 deg node 237.4125233446393 0.00010332 deg peri 105.0022896739843 0.00010596 deg M 327.7510050714377 2.3413e-05 deg tp 2459349.840613751307 (2021-May-15.34061375) 0.00010875 TDB period 1667.109969459976 4.56 1.8604e-05 5.093e-08 d yr n .2159425632351142 2.4098e-09 deg/d Q 3.006953945408457 2.237e-08 au   Orbit Determination Parameters    # obs. used (total)      495      data-arc span      9363 days (25.63 yr)      first obs. used      1994-12-28      last obs. used      2020-08-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .57643      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 12:26:31   Additional Information  Earth MOID = 1.48781 au   Jupiter MOID = 2.32987 au   T_jup = 3.338  [ 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 15.55   n/a E2021B55   diameter diameter 4.204 km 0.211 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.076   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   160564 (1998 SL88)          Discovered 1998-Sep-26 by LINEAR at Socorro Reference: 20070828/Numbers.arc Last Updated: 2007-08-30 [ show close-approach data ] Alternate Designations  1998 SL88 = 2003 UC169  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-13 20:24 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin