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177P/Barnard
Classification: Halley-type Comet* [NEO]          SPK-ID: 1000909
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453542.5 (2005-Jun-21.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9545011068589594 3.5282e-09  
a 24.33728792070278 1.3137e-07 AU
q 1.107319662446794 8.7698e-08 AU
i 31.17928819507535 1.2022e-05 deg
node 272.1861491051434 7.2742e-06 deg
peri 60.34965166822896 1.6989e-05 deg
M 356.4397738827332 1.207e-07 deg
tp 2453976.192366309480
(2006-Aug-28.69236631)
1.1989e-05 JED
period 43853.74600624281
120.07
0.00035507
9.721e-07
d
yr
n .008209104872107211 6.6466e-11 deg/d
Q 47.56725617895876 2.5676e-07 AU
  Orbit Determination Parameters
   # obs. used (total)      1713  
   data-arc span      42900 days (117.45 yr)  
   first obs. used      1889-06-27  
   last obs. used      2006-12-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .85746  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:41:48  

Additional Information
 Earth MOID = .31003 AU 
 T_jup = 1.317 
[ 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 15.7 mag 1. 27 2 parameter fit from 209 observations, autocmod 2.5c
comet total magnitude slope K1 13.   n/a 27 autocmod 2.5c
comet nuclear magnitude M2 18.3 mag 0.8 27 from 1359 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 27 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 27 autocmod 2.5c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2006.7   177P/2006 M3       
 1886.6   177P/1889 M1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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