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

[ hide orbit diagram ]

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 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 
[ hide covariance matrix ]
Orbit Covariance (9×9)
  e q tp node peri i A1 A2 A3
e 9.408598054802967E-13 4.003105652310874E-14 -3.46422039587932E-12 -3.703068063183188E-12 -5.471471163398125E-12 1.175008686381379E-12 -1.4610893814305E-16 -1.506219399847174E-17 9.012115734108406E-18
q 4.003105652310874E-14 8.349643494873292E-15 -1.088021302512134E-13 -1.699629202540789E-13 -1.506510513560184E-13 6.794457789347159E-14 -7.299824426406371E-18 -3.092458368324504E-19 4.096927672974398E-19
tp -3.46422039587932E-12 -1.088021302512134E-13 7.903041725002196E-11 1.520506929285308E-11 8.3789317058417E-11 -1.210402200967455E-11 5.821587870354928E-16 2.481410855800861E-16 -4.182057974577954E-17
node -3.703068063183188E-12 -1.699629202540789E-13 1.520506929285308E-11 1.078399728222579E-10 3.917011098891049E-11 -6.838916810801562E-12 5.624771511998056E-16 1.927381441673533E-17 -2.768603332579411E-16
peri -5.471471163398125E-12 -1.506510513560184E-13 8.3789317058417E-11 3.917011098891049E-11 1.183884036321815E-10 -1.074873402945005E-11 9.015452408102109E-16 3.010741710163661E-16 -1.108120356518942E-16
i 1.175008686381379E-12 6.794457789347159E-14 -1.210402200967455E-11 -6.838916810801562E-12 -1.074873402945005E-11 7.263577953074637E-11 -1.749406552689769E-16 -1.816665403244446E-17 -1.189522733609553E-16
A1 -1.4610893814305E-16 -7.299824426406371E-18 5.821587870354928E-16 5.624771511998056E-16 9.015452408102109E-16 -1.749406552689769E-16 2.451271173471826E-20 3.425028402475219E-21 -1.423028646879039E-21
A2 -1.506219399847174E-17 -3.092458368324504E-19 2.481410855800861E-16 1.927381441673533E-17 3.010741710163661E-16 -1.816665403244446E-17 3.425028402475219E-21 5.664217207178204E-21 -2.21414245809971E-22
A3 9.012115734108406E-18 4.096927672974398E-19 -4.182057974577954E-17 -2.768603332579411E-16 -1.108120356518942E-16 -1.189522733609553E-16 -1.423028646879039E-21 -2.21414245809971E-22 3.901417930799407E-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 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

[ 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
2004-May-06 17:45 < 00:01 Earth 0.320960799167257 0.32096029696327 0.320961301371245 56.2057342815981 56.2055865816615 2453132.239675626 0.00587657941876261 25.4754347675159 16.0538399693283 13.6698229864554 1953990.5081087 T 207 CATAB v2.0e-lin.ifort 2017-Nov-30 18:58:56 2017-Nov-30 18:58
[ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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