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JPL Small-Body Database Browser
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20003 (1991 EX2)
Classification: Main-belt Asteroid          SPK-ID: 2020003
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 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .004961332323332482 3.359e-08  
a 2.263831440640373 8.7676e-09 au
q 2.252599820539347 7.6008e-08 au
i 8.039946731428032 5.0054e-06 deg
node 345.4974523337924 2.5042e-05 deg
peri 110.4736673422183 0.00054173 deg
M 274.1049275957478 0.00053995 deg
tp 2459297.345388834360
(2021-Mar-23.84538883)
0.0018661 TDB
period 1244.126548696866
3.41
7.2276e-06
1.979e-08
d
yr
n .2893596317650116 1.681e-09 deg/d
Q 2.275063060741398 8.8111e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1382  
   data-arc span      10429 days (28.55 yr)  
   first obs. used      1991-02-13  
   last obs. used      2019-09-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53993  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 01:13:58  

Additional Information
 Earth MOID = 1.26053 au 
 Jupiter MOID = 2.70216 au 
 T_jup = 3.605 
[ 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 14.7   n/a MPO492964  

20003 (1991 EX2)          Discovered 1991-Mar-11 by Debehogne, H. at La Silla
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 EX2 = 1991 CC6 = 1997 XZ8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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