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20653 (1999 TN245)
Classification: Main-belt Asteroid          SPK-ID: 2020653
[ 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 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09242394335275311 1.7016e-08  
a 3.021972485650966 1.5498e-08 au
q 2.742669871823582 5.3213e-08 au
i 11.1835072671692 7.432e-07 deg
node 101.6355906822444 6.1729e-06 deg
peri 130.0184819710343 1.2872e-05 deg
M 164.9057388978565 1.4356e-05 deg
tp 2458321.543353103059
(2018-Jul-22.04335310)		 7.3592e-05 TDB
period 1918.819775453018
5.25		 1.4761e-05
4.041e-08		 d
yr
n .1876153271950759 1.4433e-09 deg/d
Q 3.30127509947835 1.6931e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2466  
   data-arc span      15939 days (43.64 yr)  
   first obs. used      1977-07-17  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43102  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:26:08  

Additional Information
 Earth MOID = 1.74462 au 
 Jupiter MOID = 1.78623 au 
 T_jup = 3.211 
[ 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 12.40   n/a E2021B10  

20653 (1999 TN245)          Discovered 1999-Oct-07 by CSS at Catalina
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1999 TN245 = 1978 TX7 = 1989 WG6 = 1989 YB8 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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