+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   117291 (2004 TK287) Classification: Main-belt Asteroid          SPK-ID: 2117291 [ 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 23 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1839263465412884 3.2474e-08   a 2.268824456575562 9.6749e-09 au q 1.851527863334095 7.5136e-08 au i 3.446069008646115 4.4275e-06 deg node 141.3048627900571 6.8497e-05 deg peri 157.5234148540907 6.9708e-05 deg M 284.5041990601359 1.4155e-05 deg tp 2459262.270116020766 (2021-Feb-16.77011602) 4.9722e-05 TDB period 1248.244810894053 3.42 7.9843e-06 2.186e-08 d yr n .2884049642010134 1.8448e-09 deg/d Q 2.686121049817029 1.1454e-08 au   Orbit Determination Parameters    # obs. used (total)      598      data-arc span      17031 days (46.63 yr)      first obs. used      1973-09-29      last obs. used      2020-05-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .56369      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 18:19:49   Additional Information  Earth MOID = .836425 au   Jupiter MOID = 2.52569 au   T_jup = 3.589  [ 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 16.4   n/a MPO417610   diameter diameter 3.077 km 0.098 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.056   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   117291 (2004 TK287)          Discovered 2004-Oct-09 by Spacewatch at Kitt Peak Reference: 20051019/Numbers.arc Last Updated: 2005-10-26 [ 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 2139-Aug-17 10:49 < 00:01 Amphi 0.0329391339933336 0.0329265346391928 0.0329517388469023 4.95538761658512 4.95538758136562 2502541.950890442 0.587728900585325 920.232551786587 41.5603613050215 47.0084572361628 86770.8833497738 T 23 CATAB v2.0f-lin.ifort 2020-Nov-12 18:19:50 2020-Nov-12 18:19 Alternate Designations  2004 TK287 = 1999 BF29 = 4296 T-2  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 04:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin