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

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1784073290833004 1.1781e-07  
a 5.20866303453748 2.4407e-07 au
q 4.27939937445073 7.7693e-07 au
i 8.110550655408581 1.5481e-05 deg
node 157.9094178476358 5.3324e-05 deg
peri 248.7002723344062 7.8868e-05 deg
M 319.4546421991606 5.7226e-05 deg
tp 2459689.519814989297
(2022-Apr-20.01981499)
0.00071472 TDB
period 4341.980018055282
11.89
0.00030519
8.356e-07
d
yr
n .08291148243497433 5.8277e-09 deg/d
Q 6.13792669462423 2.8761e-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 = 3.29914 au 
 Jupiter MOID = .0644862 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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