+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   10204 Turing (1997 PK1) Classification: Main-belt Asteroid          SPK-ID: 2010204 [ 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 .07951288661013003 3.4658e-08   a 2.806298211011545 1.5304e-08 au q 2.583161339565173 9.6088e-08 au i 6.910704164833002 4.4766e-06 deg node 143.0359658167752 3.6875e-05 deg peri 293.7413508310705 5.0192e-05 deg M 204.8749398950641 3.6224e-05 deg tp 2459740.409524788073 (2022-Jun-09.90952479) 0.0001752 TDB period 1717.114106150995 4.70 1.4046e-05 3.846e-08 d yr n .2096540927073039 1.715e-09 deg/d Q 3.029435082457916 1.6521e-08 au   Orbit Determination Parameters    # obs. used (total)      1372      data-arc span      11135 days (30.49 yr)      first obs. used      1990-01-24      last obs. used      2020-07-20      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .5333      source      ORB      producer      Otto Matic      solution date      2020-Nov-13 03:07:58   Additional Information  Earth MOID = 1.60821 au   Jupiter MOID = 2.15397 au   T_jup = 3.308  [ 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 13.9   n/a MPO344384   diameter diameter 4.395 km 0.372 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   geometric albedo albedo 0.276   0.094 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)   10204 Turing (1997 PK1)          Discovered 1997-Aug-01 by Comba, P. G. at Prescott Reference: 19990302/Numbers.arc Last Updated: 2004-04-19 [ show close-approach data ] Alternate Designations  1997 PK1 = 1990 BK4 = 1990 DJ5  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-19 00:36 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin