+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   167P/CINEOS Classification: Chiron-type Comet          SPK-ID: 1001647 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2453075.5 (2004-Mar-11.0) TDB Reference: JPL 21 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2699530445461589 2.0841e-05   a 16.14079062570427 0.00063946 au q 11.7835350549133 0.00013335 au i 19.12721256104015 5.322e-05 deg node 295.8374451585947 5.8604e-05 deg peri 343.6491738902912 0.0033333 deg M 16.20306339626177 0.0027498 deg tp 2452009.443399814582 (2001-Apr-09.94339981) 0.11825 TDB period 23685.6677457235 64.85 1.4075 0.003854 d yr n .01519906484650401 9.0322e-07 deg/d Q 20.49804619649523 0.00081208 au   Orbit Determination Parameters    # obs. used (total)      91      data-arc span      3416 days (9.35 yr)      first obs. used      2002-06-12      last obs. used      2011-10-19      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      3      norm. resid. RMS      .48706      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 11:13:15   Additional Information  Earth MOID = 10.7718 au   Jupiter MOID = 6.60354 au   T_jup = 3.527  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet nuclear magnitude M2 9.7   n/a MPEC 2005-M12   comet nuclear magnitude slope K2 5.0   n/a MPEC 2005-M12   comet nuclear phase coefficient PC 0.03   n/a MPEC 2005-M12   diameter diameter 66.170 km 22.900 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)   geometric albedo albedo 0.053   0.019 urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)   [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2001.3   167P/2004 PY42        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-05 11:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin