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JPL Small-Body Database Browser
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259P/Garradd (2008 R1)
Classification: Encke-type Comet          SPK-ID: 1002991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2455618.5 (2011-Feb-26.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3415297612571303 7.028e-07  
a 2.727440932037478 6.8387e-08 au
q 1.795938681675793 1.9484e-06 au
i 15.89853595203317 2.5762e-05 deg
node 51.96969233798974 0.000188 deg
peri 256.5908921731303 0.0002245 deg
M 206.9966005001279 6.65e-05 deg
tp 2456317.746074890684
(2013-Jan-25.24607489)
0.00029026 TDB
period 1645.248326399811
4.50
6.1879e-05
1.694e-07
d
yr
n .2188119533224291 8.2296e-09 deg/d
Q 3.658943182399162 9.1743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      68  
   data-arc span      3306 days (9.05 yr)  
   first obs. used      2008-09-02  
   last obs. used      2017-09-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .78106  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Oct-03 10:47:43  

Additional Information
 Earth MOID = .857638 au 
 Jupiter MOID = 1.9249 au 
 T_jup = 3.217 
[ 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 13.7   1. 13 2 parameter fit from 57 observations, autocmod 2.6i
comet total magnitude slope K1 22.   n/a 13 autocmod 2.6i
comet nuclear magnitude M2 18.9   01. 13 from 9 observations, autocmod 2.6i
comet nuclear magnitude slope K2 5.   n/a 13 autocmod 2.6i
comet nuclear phase coefficient PC 0.03   n/a 13 autocmod 2.6i

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2008.6   259P/2008 R1       
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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