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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04595440816847073 5.0676e-08  
a 2.546212384078109 1.8796e-08 AU
q 2.429202700896568 1.3187e-07 AU
i 9.305750635242715 6.3443e-06 deg
node 351.108245843343 3.4048e-05 deg
peri 290.7576208542221 9.0194e-05 deg
M 277.3062838855678 8.4262e-05 deg
tp 2457341.386948742459
(2015-Nov-14.88694874)
0.00034578 JED
period 1484.022091563347
4.06
1.6432e-05
4.499e-08
d
yr
n .2425839898520359 2.6861e-09 deg/d
Q 2.663222067259649 1.966e-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 = 1.4327 AU 
 T_jup = 3.423 
[ 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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