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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 2453849.5 (2006-Apr-24.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9544420406209867 3.4314e-09  
a 24.30466899065874 2.2692e-07 au
q 1.107271122596795 9.0436e-08 au
i 31.21645855446403 1.224e-05 deg
node 272.0677211344989 7.4188e-06 deg
peri 60.45355083971904 1.7361e-05 deg
M 358.9579497161313 1.1174e-07 deg
tp 2453976.183241819866
(2006-Aug-28.68324182)
1.2172e-05 TDB
period 43765.6107014696
119.82
0.00061291
1.678e-06
d
yr
n .008225636389621125 1.152e-10 deg/d
Q 47.50206685872069 4.4349e-07 au
  Orbit Determination Parameters
   # obs. used (total)      1702  
   data-arc span      42903 days (117.46 yr)  
   first obs. used      1889-06-24  
   last obs. used      2006-12-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .82587  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:27:46  

Additional Information
 Earth MOID = .310191 au 
 Jupiter MOID = .349611 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   1. 29 2 parameter fit from 209 observations, autocmod 2.9c
comet total magnitude slope K1 13.   n/a 29 autocmod 2.9c
comet nuclear magnitude M2 18.3   0.8 29 from 1361 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 29 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 29 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2006.7   177P/2006 M3       
 1886.8   177P/1889 M1       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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