+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   144907 Whitehorne (2004 YS3) Classification: Main-belt Asteroid          SPK-ID: 2144907 [ 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 14 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1096297441886094 5.0821e-08   a 2.965581826424188 2.7069e-08 au q 2.640465849422916 1.5251e-07 au i .5021311852306983 8.47e-06 deg node 31.33642888591656 0.00074453 deg peri 45.94989746320338 0.00074567 deg M 35.29268249966447 4.1442e-05 deg tp 2458817.628737719135 (2019-Nov-30.12873772) 0.00021412 TDB period 1865.36272559439 5.11 2.5539e-05 6.992e-08 d yr n .1929919554306992 2.6423e-09 deg/d Q 3.290697803425461 3.0036e-08 au   Orbit Determination Parameters    # obs. used (total)      273      data-arc span      7304 days (20.00 yr)      first obs. used      2000-01-05      last obs. used      2020-01-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56226      source      ORB      producer      Otto Matic      solution date      2020-Jan-29 19:16:54   Additional Information  Earth MOID = 1.65586 au   Jupiter MOID = 1.93181 au   T_jup = 3.255  [ 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 16.0   n/a MPO453917   diameter diameter 2.894 km 0.859 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.084   0.038 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   144907 Whitehorne           Discovered 2004 Dec. 16 by T. Glinos, D. Levy and W. Levy at Jarnac. Mary Lou Whitehorne, currently second vice-president of the Royal Astronomical Society of Canada, has devoted much of her life to educating young people in the basics of astronomy. Her original and interesting approach has led to a surge of interest in astronomy among young people throughout Canada. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070601/MPCPages.arc Last Updated: 2007-06-06 [ show close-approach data ] Alternate Designations  2004 YS3 = 2003 UZ171  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-04 18:46 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin