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210P/Christensen
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1000440
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455229.5 (2010-Feb-02.0) TDB
Reference: JPL 51 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8316968548421141 3.3258e-07  
a 3.1755056536032 6.9627e-08 au
q .5344475889680668 1.0674e-06 au
i 10.21716794655259 9.2493e-06 deg
node 93.87242261853319 0.00012707 deg
peri 345.766023620465 0.00014534 deg
M 71.24072511607861 4.6121e-06 deg
tp 2454820.480896237200
(2008-Dec-19.98089624)
1.9692e-05 TDB
period 2066.891895256345
5.66
6.7979e-05
1.861e-07
d
yr
n .1741745665683939 5.7285e-09 deg/d
Q 5.816563718238333 1.2754e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] -2.05617514420794E-10 1.128E-10
A2 [EST] 5.655361521862536E-11 2.551E-13
A3 [EST] -1.14374450399871E-10 7.201E-11
  Orbit Determination Parameters
   # obs. used (total)      717  
   data-arc span      6256 days (17.13 yr)  
   first obs. used      2003-05-26  
   last obs. used      2020-07-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .80969  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jul-20 08:42:51  

Additional Information
 Earth MOID = .170391 au 
 Jupiter MOID = .0177924 au 
 T_jup = 2.492 
[ 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 14.9   0.9 51 2 parameter fit from 434 observations, autocmod 2.8
comet total magnitude slope K1 10.   n/a 51 autocmod 2.8
comet nuclear magnitude M2 17.8   0.8 51 from 183 observations, autocmod 2.8
comet nuclear magnitude slope K2 5.   n/a 51 autocmod 2.8
comet nuclear phase coefficient PC 0.03   n/a 51 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2009.0   210P/2008 X4       
 2003.3   210P/2003 K2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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