+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70615 (1999 TZ204) Classification: Main-belt Asteroid          SPK-ID: 2070615 [ 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 .05386590790340683 3.7042e-08   a 2.710172303309543 1.6149e-08 au q 2.564186411617107 9.9897e-08 au i 2.75000601600781 4.4035e-06 deg node 302.7690185020061 0.00010997 deg peri 164.142193336672 0.00012109 deg M 161.0795348056504 5.0917e-05 deg tp 2458271.325207326219 (2018-Jun-01.82520733) 0.00022979 TDB period 1629.647898345885 4.46 1.4565e-05 3.988e-08 d yr n .2209066144689322 1.9744e-09 deg/d Q 2.856158195001979 1.7018e-08 au   Orbit Determination Parameters    # obs. used (total)      752      data-arc span      10408 days (28.50 yr)      first obs. used      1990-10-12      last obs. used      2019-04-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .49597      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 04:33:11   Additional Information  Earth MOID = 1.58111 au   Jupiter MOID = 2.20501 au   T_jup = 3.360  [ 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 15.1   n/a MPO280196   diameter diameter 3.008 km 0.695 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.135   0.122 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70615 (1999 TZ204)          Discovered 1999-Oct-13 by LINEAR at Socorro Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 TZ204 = 2001 DP66  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-20 14:34 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin