+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   127P/Holt-Olmstead Classification: Jupiter-family Comet          SPK-ID: 1000127 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] alternate orbits: [epoch=2009-Dec-03.0] K162/1 (default) [epoch=2008-Aug-15.0] K094/1 Orbital Elements at Epoch 2455168.5 (2009-Dec-03.0) TDB Reference: JPL K162/1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .3623455624836588 1.5845e-06   a 3.443437251363689 1.311e-05 au q 2.195723043641129 3.8834e-06 au i 14.32165437252401 4.1613e-05 deg node 13.68456209223027 3.6553e-05 deg peri 6.540056514329597 0.0008594 deg M 6.576334654342131 0.00038936 deg tp 2455125.864820917468 (2009-Oct-21.36482092) 0.0024652 TDB period 2333.923876513388 6.39 0.013329 3.649e-05 d yr n .1542466760046168 8.809e-07 deg/d Q 4.691151459086249 1.7861e-05 au Additional Model Parameters  Parameter Value Uncertainty (1-sigma)  A1 [EST] 6.095811191204703E-9 4.53E-9 A2 [EST] -1.607159112276551E-8 2.159E-9   Orbit Determination Parameters    # obs. used (total)      511      data-arc span      2771 days (7.59 yr)      first obs. used      2009-06-03      last obs. used      2017-01-03      planetary ephem.      DE431      SB-pert. ephem.      SB431-BIG16      condition code      3      norm. resid. RMS      .71266      source      ORB      producer      Davide Farnocchia      solution date      2017-Mar-09 15:49:03   Additional Information  Earth MOID = 1.19854 au   Jupiter MOID = .799549 au   T_jup = 2.980  [ 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 9.5   0.8 K162/1 2 parameter fit from 99 observations, autocmod 2.6h comet total magnitude slope K1 23.   n/a K162/1 autocmod 2.6h comet nuclear magnitude M2 15.7   0.9 K162/1 from 385 observations, autocmod 2.6h comet nuclear magnitude slope K2 5.   n/a K162/1 autocmod 2.6h comet nuclear phase coefficient PC 0.03   n/a K162/1 autocmod 2.6h 127P/Holt-Olmstead          Discovered 1990-Sep-14 by Holt, Henry E. and Olmstead, C. Michelle at Palomar Mountain Observatory, California discovered on plate/photo taken on discovery date as well as 9/17 Reference: comet.dis Last Updated: 2003-08-29 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1981-May-13 22:25 11:25 Jupiter 0.855917913074714 0.852174663486755 0.859680384298593 3.60209670939494 3.31600457411666 2444738.433947597 684.643013055066 281845.845473647 3975.32970366055 -54.3032085111697 18628.4899227851 T K162/1 CATAB v2.0e-lin.ifort 2017-Dec-06 15:02:51 2017-Dec-06 15:03 1993-Sep-12 22:33 07:50 Jupiter 1.05170947790741 1.04835025813748 1.05506738346127 4.15168073549182 3.9529355086512 2449243.439472213 470.004858708627 156139.243640158 10656.7744535202 1.90254794439943 614.602156763026 T K162/1 CATAB v2.0e-lin.ifort 2017-Dec-06 15:02:51 2017-Dec-06 15:03 2064-Jan-02 10:08 1_03:55 Jupiter 1.59798366262366 1.57891844398878 1.61702288073098 4.40573275886423 4.28373283836083 2474921.922332650 1674.96701174532 892526.509829578 9648.30549486523 1.80582406917665 307.640482842033 T K162/1 CATAB v2.0e-lin.ifort 2017-Dec-06 15:02:51 2017-Dec-06 15:03 2076-Jul-08 16:30 1_21:29 Jupiter 0.767057351955875 0.766934174601682 0.767271548337629 3.47648131987526 3.14283690967791 2479493.187155441 2729.45101845587 459674.140840037 3618.28627648828 -81.104064045269 4810.67708694445 T K162/1 CATAB v2.0e-lin.ifort 2017-Dec-06 15:02:51 2017-Dec-06 15:03 2089-Jan-13 12:09 2_06:29 Jupiter 1.87407171264667 1.79402553584474 1.9540639787744 6.11368177013504 6.03930182846219 2484065.005986398 3268.86572649158 3958414.51200091 16258.0886053268 11.4185076482634 1197.75220043162 T K162/1 CATAB v2.0e-lin.ifort 2017-Dec-06 15:02:51 2017-Dec-06 15:03 Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   1997.0   127P/1996 S1         1990.6   127P/1990 R2   1990 XVIII   1990k  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Apr-13 06:55 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin