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312618 (2009 SQ246)
Classification: Jupiter Trojan          SPK-ID: 2312618
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1782287491143351 1.1758e-07  
a 5.205711654236906 2.4213e-07 au
q 4.277904177852346 7.7434e-07 au
i 8.111810896707656 1.5483e-05 deg
node 157.912961334101 5.3322e-05 deg
peri 248.8915521357737 7.904e-05 deg
M 335.5532847508225 5.8274e-05 deg
tp 2459691.102618881445
(2022-Apr-21.60261888)
0.00071701 TDB
period 4338.290102220924
11.88
0.00030267
8.287e-07
d
yr
n .08298200247505422 5.7895e-09 deg/d
Q 6.133519130621465 2.8528e-07 au
  Orbit Determination Parameters
   # obs. used (total)      84  
   data-arc span      4427 days (12.12 yr)  
   first obs. used      2008-09-06  
   last obs. used      2020-10-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .65169  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:30:39  

Additional Information
 Earth MOID = 3.2981 au 
 Jupiter MOID = .0600948 au 
 T_jup = 2.948 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.58   n/a E2021B25  

312618 (2009 SQ246)          Discovered 2009-Sep-17 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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