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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08082092794258904 7.8347e-08  
a 2.716848328524911 2.2742e-08 AU
q 2.497270125534255 2.1413e-07 AU
i 9.825512010004939 7.9831e-06 deg
node 349.2658098145299 2.9785e-05 deg
peri 180.7106633687628 4.6526e-05 deg
M 187.9565486306929 4.0133e-05 deg
tp 2457782.185693559671
(2017-Jan-28.68569356)
0.00018738 JED
period 1635.673124677182
4.48
2.0538e-05
5.623e-08
d
yr
n .220092874651254 2.7635e-09 deg/d
Q 2.936426531515566 2.458e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      890  
   data-arc span      9463 days (25.91 yr)  
   first obs. used      1988-11-05  
   last obs. used      2014-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47232  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 15:03:35  

Additional Information
 Earth MOID = 1.50424 AU 
 T_jup = 3.335 
[ 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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