+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100615 (1997 TX1) Classification: Main-belt Asteroid          SPK-ID: 2100615 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 18 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2052215773850908 3.3276e-08   a 2.207460685922054 6.2658e-09 au q 1.754442121941556 7.4356e-08 au i 2.756802244062395 3.3325e-06 deg node 343.612561054393 6.928e-05 deg peri 60.06690294510803 7e-05 deg M 7.791421005055521 7.5805e-06 deg tp 2459174.573012131030 (2020-Nov-21.07301213) 2.5243e-05 TDB period 1197.94779755489 3.28 5.1005e-06 1.396e-08 d yr n .3005139295174545 1.2795e-09 deg/d Q 2.660479249902552 7.5517e-09 au   Orbit Determination Parameters    # obs. used (total)      936      data-arc span      8502 days (23.28 yr)      first obs. used      1997-10-02      last obs. used      2021-01-11      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48338      source      ORB      producer      Otto Matic      solution date      2021-Feb-24 08:25:47   Additional Information  Earth MOID = .764257 au   Jupiter MOID = 2.74765 au   T_jup = 3.631  [ 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 16.73   n/a E2021B55   diameter diameter 2.230 km 0.141 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.089   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100615 (1997 TX1)          Discovered 1997-Oct-03 by ODAS at Caussols Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1997 TX1 = 2002 EJ45  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-06 12:06 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin