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469838 (2005 TR8)
Classification: Main-belt Asteroid          SPK-ID: 2469838
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2043024782913396 6.8895e-07  
a 3.193624431103897 2.1838e-07 au
q 2.541159045097602 2.3696e-06 au
i 27.00389731880475 1.6552e-05 deg
node 26.79719661161655 2.5953e-05 deg
peri 310.9113939230224 0.00019313 deg
M 267.3061829691412 8.632e-05 deg
tp 2459737.250497122690
(2022-Jun-06.75049712)
0.00045167 TDB
period 2084.606990559468
5.71
0.00021382
5.854e-07
d
yr
n .1726944223205272 1.7713e-08 deg/d
Q 3.846089817110193 2.6299e-07 au
  Orbit Determination Parameters
   # obs. used (total)      58  
   data-arc span      3995 days (10.94 yr)  
   first obs. used      2005-10-01  
   last obs. used      2016-09-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .566  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 12:31:20  

Additional Information
 Earth MOID = 1.60289 au 
 Jupiter MOID = 1.83078 au 
 T_jup = 2.996 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456805.5 (2014-May-28.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2027918374288817 6.9326e-07  
q 2.547086831237462 2.3852e-06 au
tp 2457652.753788511149
(2016-Sep-21.25378851)
0.00065122 TDB
node 26.82768669628536 2.596e-05 deg
peri 311.1764001954705 0.00019382 deg
i 26.99789218796201 1.6549e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      58  
   data-arc span      3995 days (10.94 yr)  
   first obs. used      2005-10-01  
   last obs. used      2016-09-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .566  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 12:31:20  

Additional Information
 Jupiter MOID = 1.83078 au 
 T_jup = 2.996 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.806113887815124E-13 -1.653312840247772E-12 4.343267596278765E-10 -3.778830833487124E-12 1.302648168595074E-10 -6.853427470864765E-12
q -1.653312840247772E-12 5.689071621936625E-12 -1.494033631220887E-9 1.299373531425475E-11 -4.482918203930417E-10 2.35872622141891E-11
tp 4.343267596278765E-10 -1.494033631220887E-9 4.24081167805103E-7 -3.417469964079931E-9 1.249442028820902E-7 -6.142952754525569E-9
node -3.778830833487124E-12 1.299373531425475E-11 -3.417469964079931E-9 6.739198111966086E-10 -1.598898100009728E-9 -3.387422702473544E-11
peri 1.302648168595074E-10 -4.482918203930417E-10 1.249442028820902E-7 -1.598898100009728E-9 3.756677958891463E-8 -1.765899436439022E-9
i -6.853427470864765E-12 2.35872622141891E-11 -6.142952754525569E-9 -3.387422702473544E-11 -1.765899436439022E-9 2.738554774865999E-10

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 16.6   n/a MPO392231  
diameter diameter 3.576 km 0.305 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.038   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

469838 (2005 TR8)          Discovered 2005-Oct-01 by Spacewatch at Kitt Peak
Reference: Last Updated: 2016-08-22

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