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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2758838444192959 1.021e-07  
a 2.585617565787304 1.839e-08 AU
q 1.872287451539841 2.6101e-07 AU
i 5.152279235475337 6.8178e-06 deg
node 121.8293028703632 9.7325e-05 deg
peri 246.7011215045769 9.829e-05 deg
M 157.897153528736 1.5703e-05 deg
tp 2456134.434926204089
(2012-Jul-25.93492620)
6.4152e-05 JED
period 1518.605124967559
4.16
1.6201e-05
4.436e-08
d
yr
n .2370596503865286 2.529e-09 deg/d
Q 3.298947680034767 2.3463e-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 = .877094 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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