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325P/Yang-Gao
Classification: Jupiter-family Comet [NEO]          SPK-ID: 1003026
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455051.5 (2009-Aug-08.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6209634646215445 6.5898e-07  
a 3.419529284620579 6.0142e-06 au
q 1.296126532667753 9.112e-07 au
i 16.15830886183106 1.9575e-05 deg
node 259.3038957648595 2.5507e-05 deg
peri 346.9555947376026 0.00012283 deg
M 12.19570484817778 3.2751e-05 deg
tp 2454973.255769739973
(2009-May-21.75576974)		 0.0001047 TDB
period 2309.659281219684
6.32		 0.0060932
1.668e-05		 d
yr
n .1558671458284926 4.112e-07 deg/d
Q 5.542932036573406 9.7488e-06 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 1.558703317998703E-9 6.638E-10
A2 [EST] -2.718059320187587E-10 4.701E-12
   Orbit Determination Parameters
   # obs. used (total)      1126  
   data-arc span      23477 days (64.28 yr)  
   first obs. used      1951-05-28  
   last obs. used      2015-09-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .54995  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:28:24  

Additional Information
 Earth MOID = .287792 au 
 Jupiter MOID = .0884747 au 
 T_jup = 2.742 
[ 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 15.7   1. 29 2 parameter fit from 186 observations, autocmod 2.9c
comet total magnitude slope K1 11.75   n/a 29 autocmod 2.9c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year (est.)		  New-Style 
Desig		 Roman
 Numeral 		 Year/
 Letter 
 2015.7   325P/2015 J4       
 2009.4   325P/2009 L2       
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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