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JPL Small-Body Database Browser
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97194 (1999 WR20)
Classification: Main-belt Asteroid          SPK-ID: 2097194
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09468349359427213 5.105e-08  
a 2.593853470695766 1.695e-08 au
q 2.348258362218663 1.2674e-07 au
i 4.713102805455595 4.6477e-06 deg
node 83.09138395585204 6.2024e-05 deg
peri 89.58297209455696 6.7858e-05 deg
M 226.9092796574068 3.0698e-05 deg
tp 2459564.607481793644
(2021-Dec-16.10748179)
0.00013324 TDB
period 1525.866663903843
4.18
1.4956e-05
4.095e-08
d
yr
n .2359314929123364 2.3126e-09 deg/d
Q 2.839448579172869 1.8555e-08 au
  Orbit Determination Parameters
   # obs. used (total)      559  
   data-arc span      7258 days (19.87 yr)  
   first obs. used      1999-11-30  
   last obs. used      2019-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60391  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 11:28:02  

Additional Information
 Earth MOID = 1.35918 au 
 Jupiter MOID = 2.13451 au 
 T_jup = 3.407 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO264036  

97194 (1999 WR20)          Discovered 1999-Nov-30 by Spacewatch at Kitt Peak
Reference: 20050224/Numbers.arcLast Updated: 2005-02-28

Alternate Designations
 1999 WR20 = 2001 FC70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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