+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   144P/Kushida Classification: Jupiter-family Comet          SPK-ID: 1000148 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2454937.5 (2009-Apr-16.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6278179431754092 1.4978e-07   a 3.866357109538149 2.225e-06 au q 1.438988741446288 3.0754e-07 au i 4.109120314768083 4.1598e-06 deg node 245.559238116922 7.06e-05 deg peri 216.0950327146944 7.7588e-05 deg M 10.26056601022117 1.2922e-05 deg tp 2454858.355599924424 (2009-Jan-26.85559992) 3.8723e-05 TDB period 2776.843304631029 7.60 0.002397 6.563e-06 d yr n .1296436134511503 1.1191e-07 deg/d Q 6.29372547763001 3.6218e-06 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 1.034900444743769E-8 1.187E-10 A2 [EST] -1.247491213413311E-9 5.555E-11 A3 [EST] -3.009571027831197E-10 4.592E-11 DT [EST] 38.28098745142398 1.214   Orbit Determination Parameters    # obs. used (total)      3096      data-arc span      8530 days (23.35 yr)      first obs. used      1994-01-07      last obs. used      2017-05-16      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      2      norm. resid. RMS      .61521      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 11:13:17   Additional Information  Earth MOID = .459034 au   Jupiter MOID = .00814085 au   T_jup = 2.684  [ 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 13.4   2. 20 2 parameter fit from 387 observations, autocmod 2.8 comet total magnitude slope K1 9.75   n/a 20 autocmod 2.8 [ show close-approach data ] Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2001.5   144P/2000 O2         1993.9   144P/1994 A1   1993 XX   1994a  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Feb-25 16:41 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin