+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   100618 (1997 TJ11) Classification: Main-belt Asteroid          SPK-ID: 2100618 [ 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 .2305173623559905 4.5411e-08   a 2.762191726394543 1.5324e-08 au q 2.125458575304533 1.315e-07 au i 9.564559322307508 5.7407e-06 deg node 353.4127905582 2.3527e-05 deg peri 315.1192591805524 2.6098e-05 deg M 21.7188414912611 1.0842e-05 deg tp 2458899.338953834834 (2020-Feb-19.83895383) 5.025e-05 TDB period 1676.791859920947 4.59 1.3954e-05 3.82e-08 d yr n .2146956987356633 1.7866e-09 deg/d Q 3.398924877484552 1.8857e-08 au   Orbit Determination Parameters    # obs. used (total)      1288      data-arc span      8341 days (22.84 yr)      first obs. used      1997-10-03      last obs. used      2020-08-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .46042      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 09:03:37   Additional Information  Earth MOID = 1.12379 au   Jupiter MOID = 1.95689 au   T_jup = 3.282  [ 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 14.6   n/a MPO348128   diameter diameter 3.939 km 0.905 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.198   0.045 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   100618 (1997 TJ11)          Discovered 1997-Oct-03 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ show close-approach data ] Alternate Designations  1997 TJ11 = 2000 DJ77  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Oct-22 13:21 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin