+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100277 (1994 XB5) Classification: Main-belt Asteroid          SPK-ID: 2100277 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1997173900908486 3.5942e-08   a 2.467839499478601 1.288e-08 au q 1.974969035479629 8.5558e-08 au i 8.806339733931779 4.8495e-06 deg node 226.154616973085 2.4424e-05 deg peri 264.5126106608009 3.0186e-05 deg M 169.028375713264 2.02e-05 deg tp 2458335.638919717853 (2018-Aug-05.13891972) 7.5792e-05 TDB period 1416.034366369355 3.88 1.1085e-05 3.035e-08 d yr n .2542311179374997 1.9902e-09 deg/d Q 2.960709963477573 1.5452e-08 au   Orbit Determination Parameters    # obs. used (total)      718      data-arc span      10888 days (29.81 yr)      first obs. used      1990-12-25      last obs. used      2020-10-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5445      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 20:07:02   Additional Information  Earth MOID = 1.01246 au   Jupiter MOID = 2.18846 au   T_jup = 3.442  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.9   n/a MPO385419   diameter diameter 3.635 km 0.854 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)   geometric albedo albedo 0.059   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   100277 (1994 XB5)          Discovered 1994-Dec-02 by Pravec, P. at Ondrejov Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Dec-02 14:28 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin