+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70592 (1999 TD177) Classification: Main-belt Asteroid          SPK-ID: 2070592 [ 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 22 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09447307650587825 3.883e-08   a 2.759454863750709 1.4159e-08 au q 2.49876067329307 1.0669e-07 au i 3.877757347034111 4.6797e-06 deg node 35.52743081507402 6.2772e-05 deg peri 12.84226683488272 6.7739e-05 deg M 169.1100805782855 2.6646e-05 deg tp 2458213.997034127664 (2018-Apr-05.49703413) 0.00012167 TDB period 1674.300353626569 4.58 1.2887e-05 3.528e-08 d yr n .2150151848324183 1.6549e-09 deg/d Q 3.020149054208347 1.5497e-08 au   Orbit Determination Parameters    # obs. used (total)      826      data-arc span      7570 days (20.73 yr)      first obs. used      1999-10-02      last obs. used      2020-06-23      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5469      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 22:00:00   Additional Information  Earth MOID = 1.50878 au   Jupiter MOID = 2.30865 au   T_jup = 3.332  [ 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 15.2   n/a MPO337794   diameter diameter 3.202 km 0.978 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.157   0.119 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70592 (1999 TD177)          Discovered 1999-Oct-10 by LINEAR at Socorro Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 TD177 = 2001 DP28  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-19 05:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin