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C/2005 O2 (Christensen)
Classification: Halley-type Comet*          SPK-ID: 1001658
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

[ show orbit diagram ]
Orbital Elements at Epoch 2453638.5 (2005-Sep-25.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8593766054421174 7.1756e-05  
a 23.70570180739585 0.012242 au
q 3.333576258532938 2.0864e-05 au
i 148.8920505164611 6.8082e-05 deg
node 280.7713953483397 0.00022991 deg
peri 263.8338908769753 0.00052723 deg
M .1413655232227119 0.00010329 deg
tp 2453621.945401328306
(2005-Sep-08.44540133)
0.0018711 TDB
period 42157.77217773815
115.42
32.657
0.08941
d
yr
n .008539350667825416 6.615e-06 deg/d
Q 44.07782735625876 0.022763 au
  Orbit Determination Parameters
   # obs. used (total)      126  
   data-arc span      359 days  
   first obs. used      2005-07-31  
   last obs. used      2006-07-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      4  
   norm. resid. RMS      .62557  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:30:51  

Additional Information
 Earth MOID = 2.52907 au 
 Jupiter MOID = .27482 au 
 T_jup = -1.649 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 5.2   0.3 18 2 parameter fit from 38 observations, autocmod 2.9c
comet total magnitude slope K1 20.   n/a 18 autocmod 2.9c
comet nuclear magnitude M2 14.0   0.7 18 from 58 observations, autocmod 2.9c
comet nuclear magnitude slope K2 5.   n/a 18 autocmod 2.9c
comet nuclear phase coefficient PC 0.03   n/a 18 autocmod 2.9c

Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2005.7   C/2005 O2       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ]
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