+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70602 (1999 TD188) Classification: Main-belt Asteroid          SPK-ID: 2070602 [ 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 29 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09231798406071587 3.9506e-08   a 2.581749590626661 1.3346e-08 au q 2.343407673070429 9.8617e-08 au i 11.02093897164953 4.2385e-06 deg node 297.1822732256607 2.18e-05 deg peri 272.9415742742967 3.2077e-05 deg M 166.6931131422719 2.4758e-05 deg tp 2458298.907789078096 (2018-Jun-29.40778908) 0.00010393 TDB period 1515.198745591339 4.15 1.1749e-05 3.217e-08 d yr n .2375925937422171 1.8423e-09 deg/d Q 2.820091508182893 1.4578e-08 au   Orbit Determination Parameters    # obs. used (total)      1220      data-arc span      8181 days (22.40 yr)      first obs. used      1998-06-24      last obs. used      2020-11-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5068      source      ORB      producer      Otto Matic      solution date      2020-Dec-17 21:54:51   Additional Information  Earth MOID = 1.36918 au   Jupiter MOID = 2.28351 au   T_jup = 3.392  [ 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 14.4   n/a MPO359237   diameter diameter 4.015 km 0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.209   0.026 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70602 (1999 TD188)          Discovered 1999-Oct-12 by LINEAR at Socorro Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2104-Feb-17 10:03 00:03 Inter 0.0306475450423616 0.0306354464969071 0.0306596490353469 4.04585337061769 4.04585325255495 2489576.918486889 2.79124303416262 883.600171956708 50.4500316322699 -47.077323800797 66582.0490864283 T 29 CATAB v2.0f-lin.ifort 2020-Dec-17 21:54:53 2020-Dec-17 21:54 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-15 19:11 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin