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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .275956174650055 8.9135e-08  
a 2.585476876824514 1.7786e-08 AU
q 1.87199856824985 2.2894e-07 AU
i 5.152265447419149 6.3836e-06 deg
node 121.8285627575311 9.6797e-05 deg
peri 246.6763310617802 9.77e-05 deg
M 205.3542729512623 1.5994e-05 deg
tp 2457652.796183947242
(2016-Sep-21.29618395)
7.0244e-05 JED
period 1518.481180841162
4.16
1.5669e-05
4.29e-08
d
yr
n .2370790000838721 2.4464e-09 deg/d
Q 3.298955185399178 2.2694e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      401  
   data-arc span      8672 days (23.74 yr)  
   first obs. used      1991-09-12  
   last obs. used      2015-06-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .60573  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:28:25  

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
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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