+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15056 Barbaradixon (1998 YP12) Classification: Main-belt Asteroid          SPK-ID: 2015056 [ 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 32 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08929658471704975 3.5588e-08   a 3.002022236599536 1.4794e-08 au q 2.733951903626559 1.0689e-07 au i 1.833196591816362 4.1495e-06 deg node 299.628791021599 0.00010691 deg peri 63.59789656679575 0.0001089 deg M 147.7354183422956 2.1388e-05 deg tp 2458220.846900712769 (2018-Apr-12.34690071) 0.00011193 TDB period 1899.84987278469 5.20 1.4044e-05 3.845e-08 d yr n .1894886565285987 1.4007e-09 deg/d Q 3.270092569572514 1.6115e-08 au   Orbit Determination Parameters    # obs. used (total)      2255      data-arc span      12318 days (33.72 yr)      first obs. used      1986-08-07      last obs. used      2020-04-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48817      source      ORB      producer      Otto Matic      solution date      2020-May-20 04:07:17   Additional Information  Earth MOID = 1.73195 au   Jupiter MOID = 2.16563 au   T_jup = 3.246  [ 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 13.2   n/a MPO502284   diameter diameter 15.379 km 0.123 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.057   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15056 Barbaradixon           Discovered 1998 Dec. 28 by D. S. Dixon at Las Cruces. Barbara Dixon is a talented software developer and engineer. It is only with her support that the work at the Jornada Observatory, Las Cruces, is possible. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20000726/MPCPages.arc Last Updated: 2013-03-29 Alternate Designations  1998 YP12 = 1986 PK4  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2020-Oct-19 22:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin