+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   249480 (2009 TX17) Classification: Main-belt Asteroid          SPK-ID: 2249480 [ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2021450400993031 4.7889e-08   a 3.057173822375877 3.4663e-08 au q 2.439181297461166 1.4408e-07 au i 18.16445869583515 5.6128e-06 deg node 103.7005844801687 1.743e-05 deg peri 222.1660959520975 2.197e-05 deg M 52.32649455149067 1.3082e-05 deg tp 2458716.709557017142 (2019-Aug-21.20955702) 7.0337e-05 TDB period 1952.444174782168 5.35 3.3206e-05 9.091e-08 d yr n .1843842731330154 3.1359e-09 deg/d Q 3.675166347290588 4.167e-08 au   Orbit Determination Parameters    # obs. used (total)      507      data-arc span      8527 days (23.35 yr)      first obs. used      1997-07-12      last obs. used      2020-11-15      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .52919      source      ORB      producer      Otto Matic      solution date      2020-Dec-18 00:12:19   Additional Information  Earth MOID = 1.45537 au   Jupiter MOID = 1.71441 au   T_jup = 3.129  [ 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 14.7   n/a MPO503176   diameter diameter 6.476 km 0.231 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.073   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   249480 (2009 TX17)          Discovered 2009-Oct-15 by CSS at Catalina Reference: 20100824/Numbers.arc Last Updated: 2010-08-27 [ show close-approach data ] Alternate Designations  2009 TX17 = 2004 XX143  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-20 05:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin