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JPL Small-Body Database Browser
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C/2014 E2 (Jacques)
Classification: Comet          SPK-ID: 1003306
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456870.5 (2014-Aug-01.0) TDB
Reference: JPL 52 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9990354749651944 1.6832e-06  
a 688.3359303513679 1.2018 au
q .6639172371800959 6.1656e-07 au
i 156.3927523000566 7.8606e-06 deg
node 56.39160285835614 4.5903e-05 deg
peri 344.0371372249398 9.5152e-05 deg
M .001609225640958965 4.2167e-06 deg
tp 2456841.014158293178
(2014-Jul-02.51415829)
4.0923e-05 TDB
period 6596280.064323557
18059.63
17275
47.3
d
yr
n 5.457621515300498E-5 1.4293e-07 deg/d
Q 1376.007943465556 2.4025 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.066990301803521E-8 3.546E-10
A2 [EST] -2.824189606382993E-9 9.848E-11
  Orbit Determination Parameters
   # obs. used (total)      4803  
   data-arc span      452 days (1.24 yr)  
   first obs. used      2014-03-13  
   last obs. used      2015-06-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   norm. resid. RMS      .48402  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Jan-11 19:59:38  

Additional Information
 Earth MOID = .276301 au 
 Jupiter MOID = 1.03189 au 
 T_jup = -0.918 
[ hide covariance matrix ]
Orbit Covariance (8×8)
  e q tp node peri i A1 A2
e 2.833236724490533E-12 9.525183644031337E-13 6.73264827305573E-11 1.308120163268157E-12 1.365064484890597E-10 -7.651967384952983E-12 -5.486148684449789E-16 1.119109891484707E-16
q 9.525183644031337E-13 3.801522980144328E-13 2.147070470126936E-11 4.49861680790128E-12 5.340103887410799E-11 -2.267756763833464E-12 -2.176893688392016E-16 2.384343162651519E-17
tp 6.73264827305573E-11 2.147070470126936E-11 1.674655197638672E-9 -6.126530296772566E-11 3.114865734502127E-9 -1.775914252988273E-10 -1.232687800711628E-14 3.06304843548169E-15
node 1.308120163268157E-12 4.49861680790128E-12 -6.126530296772566E-11 2.107049612056695E-9 2.231853222844975E-9 2.136027526434176E-10 -2.746698743541399E-15 -1.593013788247616E-15
peri 1.365064484890597E-10 5.340103887410799E-11 3.114865734502127E-9 2.231853222844975E-9 9.053932797678178E-9 -1.449699234326271E-10 -3.083442524647647E-14 3.06703809570875E-15
i -7.651967384952983E-12 -2.267756763833464E-12 -1.775914252988273E-10 2.136027526434176E-10 -1.449699234326271E-10 6.178927808693421E-11 1.301596317295089E-15 -3.913175610593067E-16
A1 -5.486148684449789E-16 -2.176893688392016E-16 -1.232687800711628E-14 -2.746698743541399E-15 -3.083442524647647E-14 1.301596317295089E-15 1.257572549144479E-19 -1.298961468163718E-20
A2 1.119109891484707E-16 2.384343162651519E-17 3.06304843548169E-15 -1.593013788247616E-15 3.06703809570875E-15 -3.913175610593067E-16 -1.298961468163718E-20 9.69780425248445E-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 10.4   2. 52 from 381 observations, assumed slope, autocmod 2.6g
comet total magnitude slope K1 15.   n/a 52 autocmod 2.6g
comet nuclear magnitude M2 13.8   0.9 52 from 4205 observations, autocmod 2.6g
comet nuclear magnitude slope K2 5.   n/a 52 autocmod 2.6g
comet nuclear phase coefficient PC 0.03   n/a 52 autocmod 2.6g

[ 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
2014-Jul-13 18:29 < 00:01 Venus 0.0851597223045539 0.0851590405095288 0.0851604040996177 82.4202335387159 82.4199241519851 2456852.270188419 0.0135336039246593 49.7984250726932 33.8993429142956 -85.9238344924521 375290.883717447 T 52 CATAB v2.0e-lin.ifort 2017-Nov-30 19:10:10 2017-Nov-30 19:10

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2014.5   C/2014 E2       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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