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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .005089064482431329 3.0816e-08  
a 2.264156060970334 7.4147e-09 au
q 2.252633624777769 7.1487e-08 au
i 8.03974339038853 3.6473e-06 deg
node 345.4954140809502 2.4574e-05 deg
peri 109.4819164059238 0.00046858 deg
M 332.9714173557835 0.00046512 deg
tp 2459293.928362143202
(2021-Mar-20.42836214)
0.0016076 TDB
period 1244.39415911251
3.41
6.1127e-06
1.674e-08
d
yr
n .2892974041735688 1.4211e-09 deg/d
Q 2.2756784971629 7.4524e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1773  
   data-arc span      10980 days (30.06 yr)  
   first obs. used      1991-02-13  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49835  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:11:13  

Additional Information
 Earth MOID = 1.25896 au 
 Jupiter MOID = 2.70101 au 
 T_jup = 3.604 
[ 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 14.71   n/a E2021B10  

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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