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275P/Hermann
Classification: Jupiter-family Comet          SPK-ID: 1000248
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453091.5 (2004-Mar-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7139386986688683 9.2431e-07  
a 5.76470850170098 2.1454e-07 au
q 1.649060015791221 5.2705e-06 au
i 21.57095806101515 9.9355e-05 deg
node 349.2700663841729 6.5457e-05 deg
peri 173.1390823116435 0.0006116 deg
M 132.5934220309153 6.4033e-05 deg
tp 2451229.481752029119
(1999-Feb-19.98175203)
0.00098616 TDB
period 5055.503953380316
13.84
0.00028222
7.727e-07
d
yr
n .07120951804602769 3.9752e-09 deg/d
Q 9.880356987610739 3.677e-07 au
  Orbit Determination Parameters
   # obs. used (total)      155  
   data-arc span      5145 days (14.09 yr)  
   first obs. used      1999-02-15  
   last obs. used      2013-03-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6806  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-11 11:13:02  

Additional Information
 Earth MOID = .658457 au 
 Jupiter MOID = 1.4196 au 
 T_jup = 2.273 
[ show covariance matrix ]

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 15.5   0.7 21 2 parameter fit from 65 observations, autocmod 2.8
comet total magnitude slope K1 14.75   n/a 21 autocmod 2.8
comet nuclear magnitude M2 19.3   0.9 21 from 6 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 21 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 21 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2013.0   275P/2012 Y2       
 1999.1   275P/1999 D1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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