+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   98P/Takamizawa Classification: Jupiter-family Comet          SPK-ID: 1000091 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2014-Mar-01.0] 15 (default) [epoch=2006-Mar-28.0] K064/6 [epoch=1998-Nov-03.0] SAO/1998 [epoch=1991-Aug-12.0] SAO/1991 [epoch=1984-May-20.0] SAO/1984 Orbital Elements at Epoch 2456717.5 (2014-Mar-01.0) TDB Reference: JPL 15 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .5605977808221723 1.3101e-07   a 3.808319341400365 1.6104e-07 au q 1.673383969949164 5.3823e-07 au i 10.54421204182212 1.0484e-05 deg node 114.7417165616202 5.0075e-05 deg peri 157.8742443878394 9.645e-05 deg M 27.5372541598409 2.1425e-05 deg tp 2456509.857333809695 (2013-Aug-05.35733381) 0.00015722 TDB period 2714.553869264272 7.43 0.00017218 4.714e-07 d yr n .1326184770455748 8.412e-09 deg/d Q 5.943254712851567 2.5132e-07 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 4.481930143048554E-9 1.18E-10 A2 [EST] 4.240353860189232E-10 8.515E-13   Orbit Determination Parameters    # obs. used (total)      682      data-arc span      10752 days (29.44 yr)      first obs. used      1984-07-06      last obs. used      2013-12-13      planetary ephem.      DE431      SB-pert. ephem.      SB431-BIG16      condition code      0      norm. resid. RMS      .84313      source      ORB      producer      Ryan S. Park      solution date      2014-Feb-19 14:43:06   Additional Information  Earth MOID = .660877 au   T_jup = 2.759  [ 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 comet total magnitude M1 14.3   1. 15 2 parameter fit from 175 observations, autocmod 2.5c comet total magnitude slope K1 10.   n/a 15 autocmod 2.5c diameter diameter 5.4 km n/a Scotti,J (1994) BAAS 26:1375   98P/Takamizawa          Discovered 1984-Jul-30 by Takamizawa at Tokyo Astronomical Observatory Reference: comet.dis Last Updated: 2003-08-29 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1991.3   98P/1991 D1   1991 XIII   1991h   1983.9   98P/1984 O1   1984 VII   1984j  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Mar-05 11:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin