+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   126445 Prestonreeves (2002 CH16) Classification: Main-belt Asteroid          SPK-ID: 2126445 [ 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 19 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1258182884885923 4.3465e-08   a 2.637397073762165 1.9192e-08 au q 2.305564287876588 1.1515e-07 au i 15.48427393782132 4.659e-06 deg node 48.82513595142338 2.2154e-05 deg peri 358.9473088524337 3.2465e-05 deg M 167.4615520069133 2.4271e-05 deg tp 2458272.763231512692 (2018-Jun-03.26323151) 0.00010479 TDB period 1564.450069378404 4.28 1.7076e-05 4.675e-08 d yr n .2301128089968619 2.5117e-09 deg/d Q 2.969229859647743 2.1606e-08 au   Orbit Determination Parameters    # obs. used (total)      494      data-arc span      7158 days (19.60 yr)      first obs. used      2000-09-20      last obs. used      2020-04-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56286      source      ORB      producer      Otto Matic      solution date      2020-May-20 21:22:19   Additional Information  Earth MOID = 1.31566 au   Jupiter MOID = 2.42778 au   T_jup = 3.334  [ 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 15.3   n/a MPO273185   diameter diameter 2.125 km 0.441 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.325   0.060 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   126445 Prestonreeves           Discovered 2002 Feb. 7 by J. V. McClusky at Kingsnake Observatory. W. Preston Reeves (b. 1935), chemistry professor emeritus, Texas Lutheran University, helped found the department and taught students organic chemistry for over 30 years. More than 120 of these students received advanced degrees. He also made research contributions in phase-transfer catalysis. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20070730/MPCPages.arc Last Updated: 2007-08-07 [ show close-approach data ] Alternate Designations  2002 CH16 = 2001 XA15  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-19 00:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin