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21083 (1991 TH14)
Classification: Main-belt Asteroid          SPK-ID: 2021083
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2759562467897189 1.021e-07  
a 2.58547688807348 1.8319e-08 AU
q 1.87199838987916 2.6102e-07 AU
i 5.152260232202138 6.8177e-06 deg
node 121.8285466911078 9.7331e-05 deg
peri 246.6763470532113 9.8296e-05 deg
M 205.3542626215996 1.5887e-05 deg
tp 2457652.796231774837
(2016-Sep-21.29623177)
6.9922e-05 JED
period 1518.481190751138
4.16
1.6138e-05
4.418e-08
d
yr
n .2370789985366371 2.5197e-09 deg/d
Q 3.298955386267799 2.3374e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      361  
   data-arc span      8287 days (22.69 yr)  
   first obs. used      1991-09-12  
   last obs. used      2014-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .61974  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 14:08:55  

Additional Information
 Earth MOID = .878194 AU 
 T_jup = 3.362 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3 mag n/a MPO259493  

21083 (1991 TH14)          Discovered 1991-Oct-02 by de Saint-Aignan, C. P. at Palomar (675)
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 TH14 = 1999 NN16 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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