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441557 (2008 TO138)
Classification: Main-belt Asteroid          SPK-ID: 2441557
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09487715445907778 5.4219e-08  
a 2.48399594112462 2.7142e-08 au
q 2.248321474542817 1.3213e-07 au
i 8.362581436983454 6.0881e-06 deg
node 231.4467624365383 4.3704e-05 deg
peri 4.540858662066626 5.6702e-05 deg
M 136.3587802548349 3.8666e-05 deg
tp 2458458.866700715754
(2018-Dec-06.36670072)
0.00015328 TDB
period 1429.962833181144
3.92
2.3437e-05
6.417e-08
d
yr
n .2517547950523523 4.1262e-09 deg/d
Q 2.719670407706423 2.9717e-08 au
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      8783 days (24.05 yr)  
   first obs. used      1996-10-08  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64075  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:54:58  

Additional Information
 Earth MOID = 1.2369 au 
 Jupiter MOID = 2.27768 au 
 T_jup = 3.456 
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Orbital Elements at Epoch 2457645.5 (2016-Sep-14.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09446694897019692 5.4316e-08  
q 2.250106245608079 1.3247e-07 au
tp 2457030.122586751670
(2015-Jan-07.62258675)
0.00015545 TDB
node 231.456426693848 4.3688e-05 deg
peri 5.038193889643048 5.6726e-05 deg
i 8.362771811591308 6.0885e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      121  
   data-arc span      8783 days (24.05 yr)  
   first obs. used      1996-10-08  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64075  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 08:54:58  

Additional Information
 Jupiter MOID = 2.27768 au 
 T_jup = 3.456 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.950254928144329E-15 -7.073879893683369E-15 1.054462889841192E-12 4.036373704386871E-14 2.213323462142143E-13 -1.128408650493474E-15
q -7.073879893683369E-15 1.754789180257727E-14 -3.212101927127687E-12 -9.797013863893303E-14 -6.366400237565816E-13 3.638960658379848E-15
tp 1.054462889841192E-12 -3.212101927127687E-12 2.416340860693719E-8 1.194227376095203E-10 5.660371690284105E-9 -1.591024879543256E-12
node 4.036373704386871E-14 -9.797013863893303E-14 1.194227376095203E-10 1.908670328578023E-9 -1.859157972635703E-9 1.648333057501981E-11
peri 2.213323462142143E-13 -6.366400237565816E-13 5.660371690284105E-9 -1.859157972635703E-9 3.21781741037029E-9 -1.649063569722355E-11
i -1.128408650493474E-15 3.638960658379848E-15 -1.591024879543256E-12 1.648333057501981E-11 -1.649063569722355E-11 3.707003611124818E-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 16.7   n/a MPO434638  

441557 (2008 TO138)          Discovered 2008-Sep-23 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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