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169P/NEAT
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1001656
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 2454464.5 (2007-Dec-30.0) TDB
Reference: JPL 129 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7668172062104814 1.5467e-08  
a 2.604406321792521 1.0619e-08 au
q .607302742278664 3.8371e-08 au
i 11.30147174856602 5.6559e-06 deg
node 176.2089239380909 3.0988e-05 deg
peri 217.9798820153891 3.1168e-05 deg
M 195.5044274817654 1.1125e-06 deg
tp 2455165.976700556259
(2009-Nov-30.47670056)
8.1882e-06 TDB
period 1535.187897973726
4.20
9.3895e-06
2.571e-08
d
yr
n .2344989824862216 1.4342e-09 deg/d
Q 4.601509901306378 1.8762e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1235  
   data-arc span      11780 days (32.25 yr)  
   first obs. used      1989-03-07  
   last obs. used      2021-06-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55036  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-01 22:13:05  

Additional Information
 Earth MOID = .142282 au 
 Jupiter MOID = .97532 au 
 T_jup = 2.889 
[ 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 16.8   0.9 129 2 parameter fit from 320 observations, autocmod 2.9c
comet total magnitude slope K1 4.5   n/a 129 autocmod 2.9c
rotation period rot_per 8.369 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Warner, B.D. (2006) Minor Planet Bull. 33, 35-39.]

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2001.5   169P/2002 EX12       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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