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JPL Small-Body Database Browser
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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 2453141.5 (2004-May-16.0) TDB
Reference: JPL 207 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.000688204104655 9.6998e-07  
a -1397.782599782068 1.97 au
q .9619597225853242 9.1376e-08 au
i 99.64263544704116 8.5227e-06 deg
node 210.278431108308 1.0385e-05 deg
peri 1.204334608020704 1.0881e-05 deg
M 6.468919385957737E-7 1.4431e-09 deg
tp 2453141.465700553637
(2004-May-15.96570055)
8.8899e-06 TDB
period n/a
n/a
n/a
n/a
d
yr
n 1.886012770438181E-5 3.9872e-08 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.635562356445317E-8 1.566E-10
A2 [EST] 4.916600112437359E-10 7.526E-11
A3 [EST] 4.929063627255129E-10 6.246E-11
  Orbit Determination Parameters
   # obs. used (total)      2630  
   data-arc span      1820 days (4.98 yr)  
   first obs. used      2001-08-24  
   last obs. used      2006-08-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   norm. resid. RMS      .79008  
   source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-07 23:41:44  

Additional Information
 Earth MOID = .0426515 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 7.8   1. 207 2 parameter fit from 413 observations, autocmod 2.6
comet total magnitude slope K1 7.   n/a 207 autocmod 2.6

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