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91826 (1999 TP281)
Classification: Outer Main-belt Asteroid          SPK-ID: 2091826
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0738362732337644 4.2779e-08  
a 3.204231027113308 2.3443e-08 au
q 2.967642549491264 1.3313e-07 au
i 15.48998002299092 4.5444e-06 deg
node 108.7363057991896 1.4773e-05 deg
peri 338.9537310205383 3.2458e-05 deg
M 163.7267115829669 3.2065e-05 deg
tp 2458047.701208834904
(2017-Oct-21.20120884)
0.00018115 TDB
period 2095.000635529278
5.74
2.2991e-05
6.295e-08
d
yr
n .1718376567026912 1.8858e-09 deg/d
Q 3.440819504735352 2.5174e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1041  
   data-arc span      7645 days (20.93 yr)  
   first obs. used      1999-09-14  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53626  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:38:21  

Additional Information
 Earth MOID = 1.98903 au 
 Jupiter MOID = 1.73211 au 
 T_jup = 3.132 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457152.5 (2015-May-10.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07581675000902155 4.2849e-08  
q 2.960316833372198 1.3387e-07 au
tp 2458047.659092902791
(2017-Oct-21.15909290)
0.00017668 TDB
node 108.762493494015 1.478e-05 deg
peri 338.7680025470357 3.1784e-05 deg
i 15.48850385876368 4.5442e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1041  
   data-arc span      7645 days (20.93 yr)  
   first obs. used      1999-09-14  
   last obs. used      2020-08-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53626  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:38:21  

Additional Information
 Jupiter MOID = 1.73211 au 
 T_jup = 3.132 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.836018074870616E-15 -5.662654962262936E-15 3.823474456164893E-15 -2.759679182580603E-15 -2.933945331525872E-14 2.247856044833276E-15
q -5.662654962262936E-15 1.792025587285118E-14 1.904403400285525E-12 1.013365812783455E-14 3.65355117552747E-13 -6.105803933494505E-15
tp 3.823474456164893E-15 1.904403400285525E-12 3.121501878637207E-8 6.004549948288973E-14 4.985560570602291E-9 -1.321778389176403E-12
node -2.759679182580603E-15 1.013365812783455E-14 6.004549948288973E-14 2.184547421004883E-10 -2.103351728625954E-10 -2.007613764572847E-11
peri -2.933945331525872E-14 3.65355117552747E-13 4.985560570602291E-9 -2.103351728625954E-10 1.010219033911801E-9 1.901492224878377E-11
i 2.247856044833276E-15 -6.105803933494505E-15 -1.321778389176403E-12 -2.007613764572847E-11 1.901492224878377E-11 2.064977994935329E-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 13.9   n/a MPO474797  
diameter diameter 8.853 km 0.172 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.098   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91826 (1999 TP281)          Discovered 1999-Oct-08 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

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