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226905 (2004 TN185)
Classification: Main-belt Asteroid          SPK-ID: 2226905
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1212160473751506 4.321e-08  
a 2.744415121658912 2.3379e-08 au
q 2.411747968254826 1.2287e-07 au
i 9.277372291238049 6.4685e-06 deg
node 11.50186390116559 3.1205e-05 deg
peri 251.8164516915476 4.2457e-05 deg
M 303.9129113044242 3.0305e-05 deg
tp 2459459.222100947015
(2021-Sep-01.72210095)
0.00014051 TDB
period 1660.630967074464
4.55
2.122e-05
5.81e-08
d
yr
n .2167850697341942 2.7702e-09 deg/d
Q 3.077082275062998 2.6213e-08 au
  Orbit Determination Parameters
   # obs. used (total)      451  
   data-arc span      8366 days (22.90 yr)  
   first obs. used      1998-03-29  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57085  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:37:41  

Additional Information
 Earth MOID = 1.41493 au 
 Jupiter MOID = 2.04174 au 
 T_jup = 3.319 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457590.5 (2016-Jul-21.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1213497854349043 4.3162e-08  
q 2.412209471985488 1.2274e-07 au
tp 2457795.321887917791
(2017-Feb-10.82188792)
0.00013701 TDB
node 11.52973729293352 3.1197e-05 deg
peri 251.2169021758061 4.2428e-05 deg
i 9.278181580951117 6.4686e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      451  
   data-arc span      8366 days (22.90 yr)  
   first obs. used      1998-03-29  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57085  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:37:41  

Additional Information
 Jupiter MOID = 2.04174 au 
 T_jup = 3.319 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.862943740967523E-15 -5.2243031200757E-15 -1.524290862587329E-13 -8.320109146834712E-15 5.08239840980446E-14 2.420211402469176E-15
q -5.2243031200757E-15 1.506507059983265E-14 6.956102088952822E-13 2.377566956935563E-14 -1.100292226740521E-13 -6.547066043879396E-15
tp -1.524290862587329E-13 6.956102088952822E-13 1.877273262121474E-8 3.732604767311934E-11 3.954949722624268E-9 2.73810846689105E-12
node -8.320109146834712E-15 2.377566956935563E-14 3.732604767311934E-11 9.73269117852286E-10 -9.525203367158897E-10 -6.121934941218619E-11
peri 5.08239840980446E-14 -1.100292226740521E-13 3.954949722624268E-9 -9.525203367158897E-10 1.800169649611426E-9 6.115141626675335E-11
i 2.420211402469176E-15 -6.547066043879396E-15 2.73810846689105E-12 -6.121934941218619E-11 6.115141626675335E-11 4.18432854354453E-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 15.64   n/a E2021B55  

226905 (2004 TN185)          Discovered 2004-Oct-07 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

Alternate Designations
 2004 TN185 = 2007 ET47 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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