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266P/Christensen
Classification: Encke-type Comet          SPK-ID: 1002425
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


:
Orbital Elements at Epoch 2457931.5 (2017-Jun-27.0) TDB
Reference: JPL K202/11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3396456148119091 7.057e-07  
a 3.531948266738769 6.7911e-07 au
q 2.332337526198423 2.9338e-06 au
i 3.427132554623115 1.3107e-05 deg
node 5.00362962736593 0.00023042 deg
peri 98.00968589465538 0.00050376 deg
M 207.38078120853 0.00023453 deg
tp 2458959.342693290545
(2020-Apr-19.84269329)
0.0014941 TDB
period 2424.487377898156
6.64
0.00069925
1.914e-06
d
yr
n .148484996573623 4.2825e-08 deg/d
Q 4.731559007279115 9.0976e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.466510374430944E-8 4.008E-9
A2 [EST] 1.563291919585549E-8 6.501E-9
  Orbit Determination Parameters
   # obs. used (total)      520  
   data-arc span      2801 days (7.67 yr)  
   first obs. used      2012-08-15  
   last obs. used      2020-04-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .80584  
   source      ORB  
   producer      Javier Roa  
   solution date      2021-May-04 16:40:00  

Additional Information
 Earth MOID = 1.35056 au 
 Jupiter MOID = .525826 au 
 T_jup = 3.020 
[ 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 11.0   0.7 K202/11 2 parameter fit from 407 observations, autocmod 2.9c
comet total magnitude slope K1 16.25   n/a K202/11 autocmod 2.9c
comet nuclear magnitude M2 15.9   0.5 K202/11 from 85 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a K202/11 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a K202/11 autocmod 2.9c

[ 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
1937-Mar-03 17:20 5_03:20 Jupiter 0.430250704623467 0.426660365826423 0.434038260378055 2.28000222055554 1.1229720141348 2428596.221879353 7399.51979060859 750146.505672639 53580.0534554565 89.8338250786074 34395.0209147791 T K202/11 CATAB v2.0g-lin.ifort 2021-May-04 16:42:03 2021-May-04 16:42
1984-Nov-11 08:26 11:23 Jupiter 1.12559873431957 1.11498012678853 1.1362034791179 4.33830586037718 4.16123550439474 2446015.851210634 682.699307787995 490165.318155587 2932.26245151714 15.3896026601264 6222.95429221005 T K202/11 CATAB v2.0g-lin.ifort 2021-May-04 16:42:03 2021-May-04 16:42
1996-Aug-29 04:49 1_07:38 Jupiter 1.51779860597627 1.51022410591006 1.52537163600806 5.85485466072608 5.75875015380856 2450324.700508912 1897.69131439572 370078.865551568 1708.51850221069 -0.801742517116125 817.436379660244 T K202/11 CATAB v2.0g-lin.ifort 2021-May-04 16:42:03 2021-May-04 16:42
1998-Dec-29 01:34 3_04:10 Jupiter 1.73358343076076 1.73000372785176 1.73730215541899 1.96845516325121 1.70224059968582 2451176.565396864 4570.11764807634 977176.537934553 653.541998913644 71.2611199121302 311004.068787693 T K202/11 CATAB v2.0g-lin.ifort 2021-May-04 16:42:03 2021-May-04 16:42
2044-Mar-12 17:36 2_13:40 Jupiter 1.26193497848027 1.24695710442979 1.27690201261825 4.86048834026082 4.72037374346053 2467687.233052478 3700.01686171663 722444.897505759 3091.96404283672 1.38546823086792 692.880130299087 T K202/11 CATAB v2.0g-lin.ifort 2021-May-04 16:42:03 2021-May-04 16:42
2055-Dec-20 16:26 1_14:48 Jupiter 1.14417618086467 1.13469131481421 1.15364744813416 4.71656929415818 4.55691182012645 2471987.185065384 2328.25411063408 428978.441092945 1911.53393578582 7.3876409793307 3335.13138326533 T K202/11 CATAB v2.0g-lin.ifort 2021-May-04 16:42:03 2021-May-04 16:42
2103-Sep-19 22:26 3_06:58 Jupiter 0.825829307906073 0.8129592860573 0.838700092088539 3.80038260381819 3.5201679032285 2489426.434677557 4737.71148464409 643053.145535978 2406.57617830448 2.80474306825883 4900.4249249867 T K202/11 CATAB v2.0g-lin.ifort 2021-May-04 16:42:03 2021-May-04 16:42
2115-Jun-02 02:57 3_17:24 Jupiter 1.04117830462658 1.02586180422097 1.05649428666143 4.51579595885087 4.33190109727691 2493699.623215832 5363.49547514625 762678.719259357 3875.58255202678 4.86215829589163 16542.7210856093 T K202/11 CATAB v2.0g-lin.ifort 2021-May-04 16:42:03 2021-May-04 16:42

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.7   266P/2012 P1       
 2007.0   266P/2006 U5       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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