+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   5105 Westerhout (1986 TM1) Classification: Main-belt Asteroid          SPK-ID: 2005105 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1585873322220885 9.9346e-08   a 2.59470462004619 2.3553e-08 AU q 2.183217336448737 2.6172e-07 AU i 11.66109043872339 1.077e-05 deg node 226.7620700893771 3.2931e-05 deg peri 189.3834209841905 4.1738e-05 deg M 101.0490167880233 2.4491e-05 deg tp 2455971.991041363689 (2012-Feb-14.49104136) 0.00010194 JED period 1526.617774348854 4.18 2.0787e-05 5.691e-08 d yr n .2358154123769129 3.2109e-09 deg/d Q 3.006191903643643 2.7289e-08 AU   Orbit Determination Parameters    # obs. used (total)      839      data-arc span      11124 days (30.46 yr)      first obs. used      1982-10-23      last obs. used      2013-04-07      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .50287      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 13:15:13   Additional Information  Earth MOID = 1.19468 AU   T_jup = 3.371  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 12.60 mag n/a IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2 diameter diameter 13.58 km 1.4 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2 rotation period rot_per 13.0881 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Published Reference List: [Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] geometric albedo albedo 0.0874   0.021 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2 5105 Westerhout (1986 TM1)          Discovered 1986-Oct-04 by Bowell, E. at Flagstaff Reference: DISCOVERY.DB Last Updated: 2003-08-29 Alternate Designations  1986 TM1 = 1982 UL10 = 1990 SQ10  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ] 2013-May-26 01:32 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin