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266808 (2009 SN355)
Classification: Jupiter Trojan          SPK-ID: 2266808
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09459893730375575 5.923e-08  
a 5.128646332695298 1.7725e-07 au
q 4.643481839815518 4.2443e-07 au
i 6.876052926686935 6.6328e-06 deg
node 209.4664543271421 5.8394e-05 deg
peri 221.9093397976274 7.5666e-05 deg
M 291.8446482659602 5.2989e-05 deg
tp 2460003.656200969836
(2023-Feb-28.15620097)
0.00064978 TDB
period 4242.31149855153
11.61
0.00021993
6.021e-07
d
yr
n .08485939802461849 4.3992e-09 deg/d
Q 5.613810825575077 1.9402e-07 au
  Orbit Determination Parameters
   # obs. used (total)      211  
   data-arc span      8458 days (23.16 yr)  
   first obs. used      1997-10-10  
   last obs. used      2020-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54622  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 14:15:06  

Additional Information
 Earth MOID = 3.66123 au 
 Jupiter MOID = .0759239 au 
 T_jup = 2.977 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457488.5 (2016-Apr-10.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09214803512485419 5.9076e-08  
q 4.665836611407663 4.2352e-07 au
tp 2455754.789294443929
(2011-Jul-12.28929444)
0.00056096 TDB
node 209.5484090156446 5.8328e-05 deg
peri 221.7221611035044 7.6545e-05 deg
i 6.874732307916295 6.6306e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      211  
   data-arc span      8458 days (23.16 yr)  
   first obs. used      1997-10-10  
   last obs. used      2020-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54622  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 14:15:06  

Additional Information
 Jupiter MOID = .0759239 au 
 T_jup = 2.977 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.489957417486522E-15 -2.391443200984742E-14 -5.982904568360148E-12 -1.373949629359774E-14 -7.757456528009242E-13 -2.721917276113283E-15
q -2.391443200984742E-14 1.793689894214763E-13 5.968310428116084E-11 1.100232123342203E-13 7.580182602984615E-12 2.594348606594273E-14
tp -5.982904568360148E-12 5.968310428116084E-11 3.146785697050811E-7 4.329977775987973E-11 2.770467137066121E-8 6.191011501638761E-12
node -1.373949629359774E-14 1.100232123342203E-13 4.329977775987973E-11 3.402104987851996E-9 -3.371766556120949E-9 -1.513263066147844E-10
peri -7.757456528009242E-13 7.580182602984615E-12 2.770467137066121E-8 -3.371766556120949E-9 5.859089231189397E-9 1.513103890434316E-10
i -2.721917276113283E-15 2.594348606594273E-14 6.191011501638761E-12 -1.513263066147844E-10 1.513103890434316E-10 4.396491972188821E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO433732  

266808 (2009 SN355)          Discovered 1998-Oct-12 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2009 SN355 = 1998 TB10 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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