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66820 (1999 UW17)
Classification: Main-belt Asteroid          SPK-ID: 2066820
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1566886077309995 3.998e-08  
a 2.72586736237674 1.6898e-08 au
q 2.298755000506556 1.1191e-07 au
i 2.712497144444392 6.5105e-06 deg
node 157.2335912624814 9.6866e-05 deg
peri 127.9000711509481 9.9276e-05 deg
M 327.0688612042417 2.3796e-05 deg
tp 2459350.869499802378
(2021-May-16.36949980)
0.00010906 TDB
period 1643.824717529314
4.50
1.5286e-05
4.185e-08
d
yr
n .2190014520167842 2.0365e-09 deg/d
Q 3.152979724246923 1.9546e-08 au
  Orbit Determination Parameters
   # obs. used (total)      387  
   data-arc span      8535 days (23.37 yr)  
   first obs. used      1997-01-02  
   last obs. used      2020-05-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56125  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:25:08  

Additional Information
 Earth MOID = 1.28167 au 
 Jupiter MOID = 2.00303 au 
 T_jup = 3.337 
[ 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 16.28   n/a E2021B10  

66820 (1999 UW17)          Discovered 1999-Oct-30 by Spacewatch at Kitt Peak
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 UW17 = 1999 TC253 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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