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30809 (1990 EO8)
Classification: Main-belt Asteroid          SPK-ID: 2030809
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08067043354421051 8.4976e-08  
a 2.717202083502729 2.5937e-08 AU
q 2.498004213399331 2.3675e-07 AU
i 9.82468459604527 8.1124e-06 deg
node 349.2669896741813 3.3676e-05 deg
peri 180.6846948325558 5.0324e-05 deg
M 143.9753557501275 4.0259e-05 deg
tp 2456146.214953399585
(2012-Aug-06.71495340)
0.00017981 JED
period 1635.992601295871
4.48
2.3424e-05
6.413e-08
d
yr
n .2200498949169109 3.1507e-09 deg/d
Q 2.936399953606126 2.8029e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      829  
   data-arc span      9370 days (25.65 yr)  
   first obs. used      1988-11-05  
   last obs. used      2014-07-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47116  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:03:30  

Additional Information
 Earth MOID = 1.50441 AU 
 T_jup = 3.334 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.2 mag n/a MPO263605  

30809 (1990 EO8)          Discovered 1990-Mar-07 by Debehogne, H. at La Silla (809)
Reference: 20011130/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 EO8 = 1988 VT8 = 1999 GC22 = 2001 QP240 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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