+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   165P/LINEAR Classification: Chiron-type Comet          SPK-ID: 1000294 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2452114.5 (2001-Jul-24.0) TDB Reference: JPL 50 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6215859843752737 4.104e-05   a 18.05000082774528 0.0021142 au q 6.830373295256726 6.0202e-05 au i 15.90526366725174 5.0756e-05 deg node .6387682735317375 0.00012846 deg peri 126.2054227345921 0.0010992 deg M 5.182219846282234 0.0011081 deg tp 2451711.293431408736 (2000-Jun-15.79343141) 0.016161 TDB period 28010.07463953694 76.69 4.9213 0.01347 d yr n .01285251841106666 2.2581e-06 deg/d Q 29.26962836023384 0.0034284 au   Orbit Determination Parameters    # obs. used (total)      143      data-arc span      1209 days (3.31 yr)      first obs. used      2000-01-02      last obs. used      2003-04-25      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      4      norm. resid. RMS      .53811      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 11:13:15   Additional Information  Earth MOID = 5.87213 au   Jupiter MOID = 1.82123 au   T_jup = 3.095  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes comet total magnitude M1 5.9   0.4 50 2 parameter fit from 40 observations, autocmod 2.8 comet total magnitude slope K1 11.5   n/a 50 autocmod 2.8 comet nuclear magnitude M2 11.5   0.5 50 from 39 observations, autocmod 2.8 comet nuclear magnitude slope K2 5.   n/a 50 autocmod 2.8 comet nuclear phase coefficient PC 0.03   n/a 50 autocmod 2.8 Alternate Designations  Perihelion  Year (est.)  New-Style  Desig Roman  Numeral  Year/  Letter   2000.5   165P/2000 B4        [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters ] 2021-Mar-07 09:33 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin