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9953 (1991 EB)
Classification: Main-belt Asteroid          SPK-ID: 2009953
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1219380424358453 4.5515e-08  
a 2.624326913999631 1.5455e-08 au
q 2.304321627394813 1.2026e-07 au
i 2.831944114926282 4.4438e-06 deg
node 255.9221588525927 0.00011813 deg
peri 211.1718716575278 0.00012051 deg
M 354.7701831832804 2.4191e-05 deg
tp 2457423.058452552458
(2016-Feb-04.55845255)
0.0001044 JED
period 1552.835061626261
4.25
1.3718e-05
3.756e-08
d
yr
n .2318340233913686 2.048e-09 deg/d
Q 2.944332200604449 1.734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1265  
   data-arc span      23394 days (64.05 yr)  
   first obs. used      1951-12-01  
   last obs. used      2015-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51506  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:12:30  

Additional Information
 Earth MOID = 1.32149 au 
 Jupiter MOID = 2.18224 au 
 T_jup = 3.391 
[ 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 13.5 mag n/a MPO350881  

9953 (1991 EB)          Discovered 1991-Mar-07 by Ueda, S., Kaneda, H. at Kushiro
Reference: 19990202/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 EB = 1985 XJ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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