+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2004883339118248 3.5841e-08   a 2.466114950933616 1.2797e-08 au q 1.971687673185894 8.5131e-08 au i 8.806835724504943 4.834e-06 deg node 226.0834298690929 2.3883e-05 deg peri 264.6914879349001 2.9659e-05 deg M 219.7626388823088 2.0372e-05 deg tp 2459751.535566516063 (2022-Jun-21.03556652) 8.3243e-05 TDB period 1414.550319292606 3.87 1.101e-05 3.014e-08 d yr n .2544978394123372 1.9809e-09 deg/d Q 2.960542228681339 1.5363e-08 au   Orbit Determination Parameters    # obs. used (total)      722      data-arc span      10888 days (29.81 yr)      first obs. used      1990-12-25      last obs. used      2020-10-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .54324      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 15:31:26   Additional Information  Earth MOID = 1.00914 au   Jupiter MOID = 2.1878 au   T_jup = 3.443  [ 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 15.92   n/a E2021B55   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 ] 2021-Apr-19 10:48 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin