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30809 (1990 EO8)
Classification: Main-belt Asteroid          SPK-ID: 2030809
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08134377580018951 1.6943e-08  
a 2.717191598416541 9.8566e-09 au
q 2.496164974228788 4.7741e-08 au
i 9.81789808412748 3.6917e-07 deg
node 349.2081333796064 4.4608e-06 deg
peri 179.7441515384198 1.2413e-05 deg
M 313.2474183045616 1.1949e-05 deg
tp 2459412.962319518183
(2021-Jul-17.46231952)
5.4312e-05 TDB
period 1635.983131900688
4.48
8.9018e-06
2.437e-08
d
yr
n .2200511686093923 1.1974e-09 deg/d
Q 2.938218222604295 1.0658e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2458  
   data-arc span      11823 days (32.37 yr)  
   first obs. used      1988-11-05  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .42695  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 04:31:39  

Additional Information
 Earth MOID = 1.50206 au 
 Jupiter MOID = 2.03328 au 
 T_jup = 3.334 
[ 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 13.34   n/a E2021B10  
diameter diameter 9.223 km 0.162 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.119   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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