+ 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 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 38 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08978112144434532 1.4441e-08   a 3.000683558383419 1.37e-08 au q 2.731278823412147 4.7943e-08 au i 1.833136924263753 1.0404e-06 deg node 299.6216579425778 4.4248e-05 deg peri 63.64554712292797 4.5463e-05 deg M 222.7541634120333 1.6072e-05 deg tp 2460120.311373259059 (2023-Jun-24.81137326) 8.652e-05 TDB period 1898.579227255826 5.20 1.3002e-05 3.56e-08 d yr n .1896154739459242 1.2986e-09 deg/d Q 3.270088293354691 1.493e-08 au   Orbit Determination Parameters    # obs. used (total)      2634      data-arc span      12739 days (34.88 yr)      first obs. used      1986-08-07      last obs. used      2021-06-23      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .47805      source      ORB      producer      Otto Matic      solution date      2021-Jul-08 03:42:29   Additional Information  Earth MOID = 1.72847 au   Jupiter MOID = 2.16602 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 13.21   n/a E2021B10   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 ] 2021-Aug-06 03:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin