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C/2001 Q4 (NEAT)
Classification: Hyperbolic Comet          SPK-ID: 1000351
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453140.5 (2004-May-15.0) TDB
Reference: JPL 208 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000688051701856 9.9686e-07  
a -1398.092298471224 2.0255 au
q .9619597853147941 9.5265e-08 au
i 99.6426335150403 8.7679e-06 deg
node 210.2784398134271 1.084e-05 deg
peri 1.204370507121934 1.157e-05 deg
M -1.820758099498258E-5 3.949e-08 deg
tp 2453141.465721592127
(2004-May-15.96572159)
9.4144e-06 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.885386134411722E-5 4.0972e-08 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.63501329755828E-8 1.605E-10
A2 [EST] 4.804120709323461E-10 7.703E-11
A3 [EST] 4.321623695175123E-10 6.418E-11
  Orbit Determination Parameters
   # obs. used (total)      2617  
   data-arc span      1811 days (4.96 yr)  
   first obs. used      2001-08-24  
   last obs. used      2006-08-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   norm. resid. RMS      .7443  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:30:11  

Additional Information
 Earth MOID = .0426109 au 
 Jupiter MOID = 4.27878 au 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 8.0   1. 208 2 parameter fit from 419 observations, autocmod 2.9c
comet total magnitude slope K1 6.75   n/a 208 autocmod 2.9c

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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