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8841 (1990 EA7)
Classification: Main-belt Asteroid          SPK-ID: 2008841
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04630720297297006 5.0653e-08  
a 2.546921681900419 1.8785e-08 au
q 2.428980862620398 1.3194e-07 au
i 9.305562999480099 6.3443e-06 deg
node 351.1057440989496 3.4044e-05 deg
peri 290.7785420274304 8.9625e-05 deg
M 62.81623433240555 8.2981e-05 deg
tp 2457341.445458702993
(2015-Nov-14.94545870)
0.00034339 JED
period 1484.642240307168
4.06
1.6425e-05
4.497e-08
d
yr
n .2424826602842158 2.6826e-09 deg/d
Q 2.664862501180441 1.9654e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1070  
   data-arc span      22774 days (62.35 yr)  
   first obs. used      1953-02-15  
   last obs. used      2015-06-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51186  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:00:29  

Additional Information
 Earth MOID = 1.43098 au 
 Jupiter MOID = 2.42487 au 
 T_jup = 3.422 
[ 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 13.3 mag n/a MPO296208  

8841 (1990 EA7)          Discovered 1990-Mar-02 by Debehogne, H. at La Silla
Reference: 19980610/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1990 EA7 = 1974 FC2 = 1978 EW2 = 1978 GV = 1988 XP3 = 1994 CU1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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