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8454 (1981 EG1)
Classification: Main-belt Asteroid          SPK-ID: 2008454
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06730189005321778 5.0789e-08  
a 2.61647336042671 2.001e-08 AU
q 2.440379757996098 1.299e-07 AU
i 3.614971561520924 5.9814e-06 deg
node 21.81567219568353 8.6783e-05 deg
peri 228.9761474799822 0.00010038 deg
M 247.4201845919009 5.3267e-05 deg
tp 2457283.927035290808
(2015-Sep-18.42703529)
0.00023048 JED
period 1545.869764254122
4.23
1.7733e-05
4.855e-08
d
yr
n .2328786087447018 2.6714e-09 deg/d
Q 2.792566962857322 2.1356e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1212  
   data-arc span      12077 days (33.07 yr)  
   first obs. used      1981-03-01  
   last obs. used      2014-03-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49022  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:16:05  

Additional Information
 Earth MOID = 1.42811 AU 
 T_jup = 3.401 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.5 mag n/a MPO253423  

8454 (1981 EG1)          Discovered 1981-Mar-05 by Debehogne, H., DeSanctis, G. at La Silla (809)
Reference: 19980313/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EG1 = 1981 EU1 = 1981 GC1 = 1987 UZ9 = 1989 CT1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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