+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   4050 Mebailey (1976 SF) Classification: Main-belt Asteroid          SPK-ID: 2004050 [ 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 30 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1391740791437325 3.5439e-08   a 3.183952344041633 1.5818e-08 au q 2.740828708522109 1.1419e-07 au i 1.474850788872863 3.8443e-06 deg node 146.1910398057818 0.00015126 deg peri 246.7245015208467 0.00015185 deg M 232.5890473400473 1.4727e-05 deg tp 2459734.933582816181 (2022-Jun-04.43358282) 8.7359e-05 TDB period 2075.144124535919 5.68 1.5464e-05 4.234e-08 d yr n .1734819262640418 1.2928e-09 deg/d Q 3.627075979561156 1.8019e-08 au   Orbit Determination Parameters    # obs. used (total)      2176      data-arc span      25655 days (70.24 yr)      first obs. used      1950-03-22      last obs. used      2020-06-17      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48888      source      ORB      producer      Otto Matic      solution date      2020-Jun-23 16:04:49   Additional Information  Earth MOID = 1.74736 au   Jupiter MOID = 1.80432 au   T_jup = 3.183  [ 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 12.6   n/a MPO347554   diameter diameter 16.604 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.069   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   4050 Mebailey (1976 SF)          Discovered 1976-Sep-20 by Lagerkvist and Rickman at Kvistaberg Reference: DISCOVERY.DB Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  1976 SF = 1954 XD = 1982 UW = 1982 VV5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-04 14:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin