+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   70635 (1999 TX227) Classification: Main-belt Asteroid          SPK-ID: 2070635 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1260054077836924 4.3371e-08   a 2.68245887482812 1.3622e-08 au q 2.344454550442418 1.1403e-07 au i 13.3583780222757 4.0774e-06 deg node 213.9917457239888 1.7463e-05 deg peri 326.283825754576 2.2757e-05 deg M 117.1680203651259 1.5733e-05 deg tp 2458478.218518853492 (2018-Dec-25.71851885) 6.8953e-05 TDB period 1604.715455862613 4.39 1.2224e-05 3.347e-08 d yr n .2243388375707284 1.7089e-09 deg/d Q 3.020463199213821 1.5339e-08 au   Orbit Determination Parameters    # obs. used (total)      936      data-arc span      8618 days (23.59 yr)      first obs. used      1997-04-05      last obs. used      2020-11-08      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51627      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 04:05:41   Additional Information  Earth MOID = 1.3565 au   Jupiter MOID = 1.9839 au   T_jup = 3.326  [ 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 14.8   n/a MPO296640   diameter diameter 2.952 km 0.126 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.267   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   70635 (1999 TX227)          Discovered 1999-Oct-01 by Spacewatch at Kitt Peak Reference: 20031109/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1999 TX227 = 2001 DU80  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-19 05:12 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin