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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 ]

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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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1211831258295531 4.3202e-08  
a 2.744082200283385 2.0444e-08 au
q 2.411545741719807 1.2252e-07 au
i 9.277751625780327 5.7123e-06 deg
node 11.50267178260148 2.7852e-05 deg
peri 251.885122420552 3.7339e-05 deg
M 346.3467392141612 2.3798e-05 deg
tp 2459459.469172597351
(2021-Sep-01.96917260)
0.00010968 TDB
period 1660.32880281307
4.55
1.8555e-05
5.08e-08
d
yr
n .2168245225825496 2.4231e-09 deg/d
Q 3.076618658846964 2.2922e-08 au
  Orbit Determination Parameters
   # obs. used (total)      501  
   data-arc span      8478 days (23.21 yr)  
   first obs. used      1998-03-29  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56111  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 09:41:10  

Additional Information
 Earth MOID = 1.41643 au 
 Jupiter MOID = 2.04125 au 
 T_jup = 3.319 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457790.5 (2017-Feb-06.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1210853356378675 4.3156e-08  
q 2.412076481374891 1.2233e-07 au
tp 2457795.642176051954
(2017-Feb-11.14217605)
0.00011315 TDB
node 11.52873879385261 2.785e-05 deg
peri 251.3032927174926 3.7356e-05 deg
i 9.278130999084052 5.7122e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      501  
   data-arc span      8478 days (23.21 yr)  
   first obs. used      1998-03-29  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56111  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 09:41:10  

Additional Information
 Jupiter MOID = 2.04125 au 
 T_jup = 3.319 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.862428003378089E-15 -5.223561419036946E-15 -1.693161395450854E-13 2.71853977618403E-15 3.66925378925057E-14 -1.746675345393762E-16
q -5.223561419036946E-15 1.49647666754546E-14 -5.663424010769869E-14 -8.855371689716176E-15 -2.235763737276114E-13 7.458158688312291E-16
tp -1.693161395450854E-13 -5.663424010769869E-14 1.280401356286674E-8 1.095276240749197E-11 2.829247761333427E-9 5.939356312871723E-12
node 2.71853977618403E-15 -8.855371689716176E-15 1.095276240749197E-11 7.755994406176559E-10 -7.624985656947973E-10 -1.901259173465654E-11
peri 3.66925378925057E-14 -2.235763737276114E-13 2.829247761333427E-9 -7.624985656947973E-10 1.395505642128315E-9 2.010415050676102E-11
i -1.746675345393762E-16 7.458158688312291E-16 5.939356312871723E-12 -1.901259173465654E-11 2.010415050676102E-11 3.262887882638598E-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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