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205P/Giacobini
Classification: Jupiter-family Comet          SPK-ID: 1000933
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455185.5 (2009-Dec-20.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5686950644375306 8.2315e-07  
a 3.540699675067 2.9246e-07 au
q 1.527121245200829 2.8054e-06 au
i 15.30550506709045 1.3483e-05 deg
node 179.6179218543356 4.9778e-05 deg
peri 154.2642271848786 0.00030195 deg
M 68.92740440940824 6.758e-05 deg
tp 2454719.569127786315
(2008-Sep-10.06912779)
0.00046708 TDB
period 2433.503995023953
6.66
0.0003015
8.255e-07
d
yr
n .1479348300788208 1.8329e-08 deg/d
Q 5.554278104933172 4.5877e-07 au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A2 [EST] 5.834321372386439E-9 4.967E-10
  Orbit Determination Parameters
   # obs. used (total)      524  
   data-arc span      2680 days (7.34 yr)  
   first obs. used      2008-09-10  
   last obs. used      2016-01-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      1  
   norm. resid. RMS      .78859  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 13:37:28  

Additional Information
 Earth MOID = .531934 au 
 Jupiter MOID = .380694 au 
 T_jup = 2.778 
[ hide covariance matrix ]
Orbit Covariance (7×7)
  e q tp node peri i A2
e 6.775702038821113E-13 -2.308718104264688E-12 -1.612249771628895E-10 -2.705242947855734E-11 -4.238088787154484E-11 -2.905183029468208E-12 1.130075573092934E-16
q -2.308718104264688E-12 7.870469964803319E-12 5.568592483977359E-10 9.237106681065112E-11 1.491442377566882E-10 9.745481489037082E-12 -3.847951380250705E-16
tp -1.612249771628895E-10 5.568592483977359E-10 2.181597459003614E-7 -5.261677568170904E-10 1.353866967303683E-7 2.33600599761201E-9 1.666715473944548E-13
node -2.705242947855734E-11 9.237106681065112E-11 -5.261677568170904E-10 2.47780906812164E-9 -4.275660341691138E-9 -2.081492774573213E-11 -1.321188193944959E-14
peri -4.238088787154484E-11 1.491442377566882E-10 1.353866967303683E-7 -4.275660341691138E-9 9.117319780548747E-8 1.403917412794534E-9 1.293480826763669E-13
i -2.905183029468208E-12 9.745481489037082E-12 2.33600599761201E-9 -2.081492774573213E-11 1.403917412794534E-9 1.81797454114035E-10 1.811919307866169E-15
A2 1.130075573092934E-16 -3.847951380250705E-16 1.666715473944548E-13 -1.321188193944959E-14 1.293480826763669E-13 1.811919307866169E-15 2.467544361855962E-19

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 14.5   1. 9 2 parameter fit from 111 observations, autocmod 2.8
comet total magnitude slope K1 7.75   n/a 9 autocmod 2.8

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2008.7   205P/2008 R6       
 1895.4   205P/1896 R2       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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