+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   74824 Tarter (1999 TJ16) Classification: Main-belt Asteroid          SPK-ID: 2074824 [ 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 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1809943461473176 4.4251e-08   a 2.379269899087983 1.0763e-08 au q 1.948635499394559 1.0756e-07 au i 3.628565046663109 4.1091e-06 deg node 78.44051807719256 8.0854e-05 deg peri 302.296029938942 8.1782e-05 deg M 225.4917629538135 1.5089e-05 deg tp 2459501.353106770595 (2021-Oct-13.85310677) 5.8423e-05 TDB period 1340.491276943149 3.67 9.0959e-06 2.49e-08 d yr n .2685582563587752 1.8223e-09 deg/d Q 2.809904298781407 1.2711e-08 au   Orbit Determination Parameters    # obs. used (total)      753      data-arc span      11497 days (31.48 yr)      first obs. used      1988-11-04      last obs. used      2020-04-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .55027      source      ORB      producer      Otto Matic      solution date      2020-May-20 14:08:37   Additional Information  Earth MOID = .9544 au   Jupiter MOID = 2.64988 au   T_jup = 3.514  [ 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 15.7   n/a MPO422178   diameter diameter 4.075 km 0.023 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.082   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   74824 Tarter           Discovered 1999 Oct. 12 by C. W. Juels at Fountain Hills. Jill C. Tarter (b. 1944) searches for extra-terrestrial intelligence at the SETI Institute using radio telescopes while holding the Bernard M. Oliver Chair for SETI. Her career inspired Carl Sagan to write Contact. She has also encouraged thousands to assist SETI discovery using their home computers. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20050919/MPCPages.arc Last Updated: 2005-09-26 [ show close-approach data ] Alternate Designations  1999 TJ16 = 1988 VV12  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-08 04:13 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin