+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07889720021310107 3.436e-08   a 2.806055751963841 1.6001e-08 au q 2.584665809492026 9.4715e-08 au i 6.918335881914583 4.4722e-06 deg node 143.002758365018 3.675e-05 deg peri 294.2966184813105 5.034e-05 deg M 246.1732814398905 3.6623e-05 deg tp 2459743.355928914684 (2022-Jun-12.85592891) 0.00017636 TDB period 1716.891577666667 4.70 1.4685e-05 4.021e-08 d yr n .2096812662388712 1.7935e-09 deg/d Q 3.027445694435656 1.7263e-08 au   Orbit Determination Parameters    # obs. used (total)      1389      data-arc span      11135 days (30.49 yr)      first obs. used      1990-01-24      last obs. used      2020-07-20      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      0      norm. resid. RMS      .53199      source      ORB      producer      Otto Matic      solution date      2021-Apr-12 21:56:05   Additional Information  Earth MOID = 1.6093 au   Jupiter MOID = 2.15249 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 13.91   n/a E2021B10   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-Apr-14 06:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin