+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 35 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .08954352231723914 1.4467e-08   a 3.001362085863212 1.4382e-08 au q 2.732609552945604 4.8103e-08 au i 1.833154135959351 1.0548e-06 deg node 299.6270326341302 4.438e-05 deg peri 63.59779485654776 4.5594e-05 deg M 185.6350211425162 1.6044e-05 deg tp 2460120.383387204915 (2023-Jun-24.88338720) 8.695e-05 TDB period 1899.223236017132 5.20 1.3651e-05 3.737e-08 d yr n .1895511771196298 1.3624e-09 deg/d Q 3.27011461878082 1.567e-08 au   Orbit Determination Parameters    # obs. used (total)      2374      data-arc span      12630 days (34.58 yr)      first obs. used      1986-08-07      last obs. used      2021-03-06      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49103      source      ORB      producer      Otto Matic      solution date      2021-Mar-17 00:24:34   Additional Information  Earth MOID = 1.72899 au   Jupiter MOID = 2.16595 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-Apr-10 21:39 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin