+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   274P/Tombaugh-Tenagra Classification: Jupiter-family Comet          SPK-ID: 1001015 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456257.5 (2012-Nov-26.0) TDB Reference: JPL 26 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4404609056444271 5.0811e-07   a 4.364004934248775 2.276e-07 au q 2.441831368672811 2.1517e-06 au i 15.83786540766405 3.5331e-05 deg node 81.36248347718983 6.9282e-05 deg peri 38.45590977651718 0.00015071 deg M 350.3420382315152 5.3876e-05 deg tp 2456346.832452566381 (2013-Feb-23.33245257) 0.00049391 TDB period 3329.862314100101 9.12 0.0002605 7.132e-07 d yr n .1081125782515396 8.4579e-09 deg/d Q 6.286178499824739 3.2785e-07 au   Orbit Determination Parameters    # obs. used (total)      640      data-arc span      30426 days (83.30 yr)      first obs. used      1931-01-12      last obs. used      2014-05-02      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .63847      source      ORB      producer      Otto Matic      solution date      2017-Jul-06 12:14:33   Additional Information  Earth MOID = 1.48001 au   Jupiter MOID = .00302864 au   T_jup = 2.774  [ 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 total magnitude M1 11.1   0.6 26 2 parameter fit from 222 observations, autocmod 2.6i comet total magnitude slope K1 14.   n/a 26 autocmod 2.6i comet nuclear magnitude M2 14.8   0.5 26 from 365 observations, autocmod 2.6i comet nuclear magnitude slope K2 5.   n/a 26 autocmod 2.6i comet nuclear phase coefficient PC 0.03   n/a 26 autocmod 2.6i [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2013.1   274P/2012 WX32         2004.0   274P/2003 WZ141         1931.1   274P/1931 AN        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-05 10:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin