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P/2010 R2 (La Sagra)
Classification: Encke-type Comet          SPK-ID: 1003104
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2455546.5 (2010-Dec-16.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1537389030537912 8.7662e-07  
a 3.098841438911215 1.5094e-05 AU
q 2.622428955355373 1.3941e-05 AU
i 21.39501831272986 3.7518e-05 deg
node 270.7063642818345 0.00017364 deg
peri 59.50668720671933 0.0019377 deg
M 31.35016017851801 0.0014901 deg
tp 2455372.985919728088
(2010-Jun-25.48591973)
0.0069813 JED
period 1992.496004556019
5.46
0.014558
3.986e-05
d
yr
n .1806779030807731 1.3201e-06 deg/d
Q 3.575253922467057 1.7415e-05 AU
  Orbit Determination Parameters
   # obs. used (total)      408  
   data-arc span      980 days (2.68 yr)  
   first obs. used      2010-08-12  
   last obs. used      2013-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   fit RMS      .62576  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 19:44:40  

Additional Information
 Earth MOID = 1.67337 AU 
 T_jup = 3.099 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
comet total magnitude M1 6.4 mag 0.7 20 from 114 observations, assumed slope, autocmod 2.5c
comet total magnitude slope K1 26.   n/a 20 autocmod 2.5c
comet nuclear magnitude M2 15.5 mag 0.4 20 from 273 observations, autocmod 2.5c
comet nuclear magnitude slope K2 5.   n/a 20 autocmod 2.5c
comet nuclear phase coefficient PC 0.03   n/a 20 autocmod 2.5c

[ show close-approach data ]
Alternate Designations
 Perihelion 
Year
(est.)
 New-Style 
Desig
Roman
 Numeral 
Year/
 Letter 
 2010.5   P/2010 R2       
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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