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226854 (2004 TN4)
Classification: Main-belt Asteroid          SPK-ID: 2226854
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1789672716362269 4.6326e-08  
a 3.165315019361602 3.5102e-08 au
q 2.598827226477285 1.53e-07 au
i 3.764430299919811 6.5723e-06 deg
node 201.995279262956 8.0752e-05 deg
peri 265.7742957279154 8.3323e-05 deg
M 282.6990094630044 2.5804e-05 deg
tp 2459838.178635898917
(2022-Sep-15.67863590)
0.00015232 TDB
period 2056.950471385126
5.63
3.4216e-05
9.368e-08
d
yr
n .1750163676802487 2.9113e-09 deg/d
Q 3.731802812245919 4.1384e-08 au
  Orbit Determination Parameters
   # obs. used (total)      256  
   data-arc span      7990 days (21.88 yr)  
   first obs. used      1998-10-29  
   last obs. used      2020-09-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60842  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 03:49:10  

Additional Information
 Earth MOID = 1.6193 au 
 Jupiter MOID = 1.44065 au 
 T_jup = 3.175 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457197.5 (2015-Jun-24.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1723855701030233 4.4369e-08  
q 2.62808612359227 1.4569e-07 au
tp 2457757.476204875008
(2017-Jan-03.97620487)
0.00014004 TDB
node 202.7200067999753 8.0028e-05 deg
peri 262.679916186648 8.3098e-05 deg
i 3.772060574517292 6.5931e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      256  
   data-arc span      7990 days (21.88 yr)  
   first obs. used      1998-10-29  
   last obs. used      2020-09-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .60842  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 03:49:10  

Additional Information
 Jupiter MOID = 1.44065 au 
 T_jup = 3.175 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.968612639486889E-15 -6.327081196343533E-15 3.382841370129454E-13 -1.432907218398998E-15 8.398126935764655E-14 8.903414775119719E-16
q -6.327081196343533E-15 2.122683550471857E-14 1.217619414561365E-12 3.916036604459965E-16 4.896769079178516E-14 1.266420898015689E-15
tp 3.382841370129454E-13 1.217619414561365E-12 1.961087560712691E-8 -2.95823460423667E-11 3.159446609893567E-9 7.556931257460029E-12
node -1.432907218398998E-15 3.916036604459965E-16 -2.95823460423667E-11 6.404411298763101E-9 -6.394371780999211E-9 -9.664827624264754E-11
peri 8.398126935764655E-14 4.896769079178516E-14 3.159446609893567E-9 -6.394371780999211E-9 6.905284907215322E-9 9.751619421857582E-11
i 8.903414775119719E-16 1.266420898015689E-15 7.556931257460029E-12 -9.664827624264754E-11 9.751619421857582E-11 4.346856998800831E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.91   n/a E2021B55  

226854 (2004 TN4)          Discovered 2004-Oct-04 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Alternate Designations
 2004 TN4 = 2006 CA31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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