+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   15909 (1997 TM17) Classification: Main-belt Asteroid          SPK-ID: 2015909 [ 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 31 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1450694677663917 3.4823e-08   a 2.286424984775507 7.9594e-09 au q 1.954734529146344 8.2061e-08 au i 6.788885619286525 3.916e-06 deg node 257.5519697509492 3.205e-05 deg peri 25.5694459649705 3.5471e-05 deg M 345.6945708138148 1.7158e-05 deg tp 2459250.680184500955 (2021-Feb-05.18018450) 6.0309e-05 TDB period 1262.797933933291 3.46 6.594e-06 1.805e-08 d yr n .2850812393069829 1.4886e-09 deg/d Q 2.61811544040467 9.1141e-09 au   Orbit Determination Parameters    # obs. used (total)      1815      data-arc span      9856 days (26.98 yr)      first obs. used      1993-07-16      last obs. used      2020-07-10      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .48606      source      ORB      producer      Otto Matic      solution date      2021-Apr-13 01:12:15   Additional Information  Earth MOID = .938885 au   Jupiter MOID = 2.50961 au   T_jup = 3.578  [ 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 14.5   n/a MPO492928   diameter diameter 4.286 km 0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.208   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   15909 (1997 TM17)          Discovered 1997-Oct-08 by Kobayashi, T. at Oizumi Reference: 20000726/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 TM17 = 1993 OK  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-16 11:38 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin