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21807 (1999 TH14)
Classification: Main-belt Asteroid          SPK-ID: 2021807
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1800889287242226 3.4844e-08  
a 3.161379004720384 1.7615e-08 au
q 2.592049646469041 1.1682e-07 au
i 1.872206413209165 3.8405e-06 deg
node 103.7076431087247 0.00013371 deg
peri 232.8194353173949 0.00013431 deg
M 349.1508894711338 1.3358e-05 deg
tp 2459458.373531839970
(2021-Aug-31.87353184)
7.6299e-05 TDB
period 2053.114990682738
5.62
1.7159e-05
4.698e-08
d
yr
n .1753433205805421 1.4655e-09 deg/d
Q 3.730708362971727 2.0787e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1571  
   data-arc span      11072 days (30.31 yr)  
   first obs. used      1991-03-15  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49455  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 14:04:31  

Additional Information
 Earth MOID = 1.58235 au 
 Jupiter MOID = 1.65547 au 
 T_jup = 3.179 
[ show covariance matrix ]

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 13.64   n/a E2021B10  

21807 (1999 TH14)          Discovered 1999-Oct-10 by Korlevic, K., Juric, M. at Visnjan
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 TH14 = 1993 QC6 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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