+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   102114 (1999 RW168) Classification: Outer Main-belt Asteroid          SPK-ID: 2102114 [ 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 .1120179523597352 4.1274e-08   a 3.204720451460775 2.1322e-08 au q 2.845734228602773 1.3118e-07 au i 13.49192301512828 5.3807e-06 deg node 343.0711486818962 2.1867e-05 deg peri 122.9536570535747 3.491e-05 deg M 119.3975240691603 2.6511e-05 deg tp 2458305.513329810201 (2018-Jul-06.01332981) 0.00015289 TDB period 2095.480649359224 5.74 2.0913e-05 5.726e-08 d yr n .1717982936802992 1.7145e-09 deg/d Q 3.563706674318777 2.371e-08 au   Orbit Determination Parameters    # obs. used (total)      1145      data-arc span      7629 days (20.89 yr)      first obs. used      1999-08-22      last obs. used      2020-07-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52772      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 19:56:36   Additional Information  Earth MOID = 1.8883 au   Jupiter MOID = 1.57865 au   T_jup = 3.140  [ 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 13.45   n/a E2021B55   diameter diameter 8.950 km 0.539 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.116   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   102114 (1999 RW168)          Discovered 1999-Sep-09 by LINEAR at Socorro Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1999 RW168 = 2000 XM41  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-02 09:35 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin