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187P/LINEAR
Classification: Jupiter-family Comet          SPK-ID: 1000262
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455601.5 (2011-Feb-09.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1731823615852687 4.3785e-07  
a 4.493527533923177 1.4513e-07 au
q 3.715327823749933 1.964e-06 au
i 13.65508613815119 1.5801e-05 deg
node 111.7360928195993 9.8567e-05 deg
peri 134.7358165923954 0.00017045 deg
M 86.85610092326647 7.4424e-05 deg
tp 2454762.083761668765
(2008-Oct-22.58376167)
0.00073722 TDB
period 3479.201145193197
9.53
0.00016856
4.615e-07
d
yr
n .1034720284848634 5.0129e-09 deg/d
Q 5.271727244096422 1.7027e-07 au
  Orbit Determination Parameters
   # obs. used (total)      296  
   data-arc span      7798 days (21.35 yr)  
   first obs. used      1999-05-12  
   last obs. used      2020-09-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .79844  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:27:48  

Additional Information
 Earth MOID = 2.71922 au 
 Jupiter MOID = .21686 au 
 T_jup = 2.937 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 1.917096586152383E-13 -8.583168665932575E-13 1.727067013342815E-10 -1.123320184724572E-12 4.078924720397283E-11 -2.930070372783517E-13
q -8.583168665932575E-13 3.857179348262574E-12 -8.170704723653139E-10 6.268220134540596E-12 -1.900782413252017E-10 1.24050009934562E-12
tp 1.727067013342815E-10 -8.170704723653139E-10 5.434878073465717E-7 -1.136973512165533E-8 1.036113793457528E-7 2.383785138700169E-9
node -1.123320184724572E-12 6.268220134540596E-12 -1.136973512165533E-8 9.715551082660476E-9 -1.103410630802893E-8 -7.546426376531668E-10
peri 4.078924720397283E-11 -1.900782413252017E-10 1.036113793457528E-7 -1.103410630802893E-8 2.905376049734538E-8 1.034017190412485E-9
i -2.930070372783517E-13 1.24050009934562E-12 2.383785138700169E-9 -7.546426376531668E-10 1.034017190412485E-9 2.496679448290413E-10

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 7.3   0.9 41 from 159 observations, assumed slope, autocmod 2.9c
comet total magnitude slope K1 16.75   n/a 41 autocmod 2.9c
comet nuclear magnitude M2 13.9   0.8 41 from 93 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 41 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 41 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2008.8   187P/2007 E3       
 1999.3   187P/1999 J5       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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