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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 
[ hide covariance matrix ]
Orbit Covariance (9×9)
  e q tp node peri i A1 A2 A3
e 9.937353699137594E-13 4.297223956025873E-14 -4.1521878193783E-12 -3.888735527211265E-12 -6.514454853975401E-12 1.154632316636527E-12 -1.541016441653542E-16 -1.610739826422167E-17 9.4957228554164E-18
q 4.297223956025873E-14 9.075428672688072E-15 -1.443193285941485E-13 -1.853185714663791E-13 -1.988378199635074E-13 6.918518440814317E-14 -7.839879786191111E-18 -3.203618576491598E-19 4.511104188478982E-19
tp -4.1521878193783E-12 -1.443193285941485E-13 8.863170514395825E-11 1.81951154085607E-11 9.452327144298688E-11 -1.300168490051993E-11 6.905710063704175E-16 2.727750216881705E-16 -5.058645036558651E-17
node -3.888735527211265E-12 -1.853185714663791E-13 1.81951154085607E-11 1.175046703905944E-10 4.458888789810053E-11 -5.766125695936924E-12 5.903398468399583E-16 1.603315356448294E-17 -3.050012351242767E-16
peri -6.514454853975401E-12 -1.988378199635074E-13 9.452327144298688E-11 4.458888789810053E-11 1.338643189682314E-10 -1.137186516463938E-11 1.065820741436558E-15 3.309803070276122E-16 -1.264844434033781E-16
i 1.154632316636527E-12 6.918518440814317E-14 -1.300168490051993E-11 -5.766125695936924E-12 -1.137186516463938E-11 7.687672981312957E-11 -1.718780326488964E-16 -1.910528924456257E-17 -1.346673079487981E-16
A1 -1.541016441653542E-16 -7.839879786191111E-18 6.905710063704175E-16 5.903398468399583E-16 1.065820741436558E-15 -1.718780326488964E-16 2.575422481341734E-20 3.49974725300583E-21 -1.499526343639664E-21
A2 -1.610739826422167E-17 -3.203618576491598E-19 2.727750216881705E-16 1.603315356448294E-17 3.309803070276122E-16 -1.910528924456257E-17 3.49974725300583E-21 5.933318584837734E-21 -2.400350459655006E-22
A3 9.4957228554164E-18 4.511104188478982E-19 -5.058645036558651E-17 -3.050012351242767E-16 -1.264844434033781E-16 -1.346673079487981E-16 -1.499526343639664E-21 -2.400350459655006E-22 4.119065578746882E-21

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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