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8508 (1991 CU1)
Classification: Main-belt Asteroid          SPK-ID: 2008508
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .132296262870107 6.7072e-08  
a 2.285920330338378 1.2348e-08 AU
q 1.983501613415811 1.5003e-07 AU
i 3.875242865642857 4.6319e-06 deg
node 276.544762011467 0.00012145 deg
peri 228.7189047582659 0.00012418 deg
M 266.4262855803215 3.0513e-05 deg
tp 2457128.626594004225
(2015-Apr-16.12659400)
0.00010811 JED
period 1262.379874242538
3.46
1.0229e-05
2.801e-08
d
yr
n .2851756490620619 2.3107e-09 deg/d
Q 2.588339047260946 1.3982e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      989  
   data-arc span      21233 days (58.13 yr)  
   first obs. used      1955-10-25  
   last obs. used      2013-12-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50762  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:16:59  

Additional Information
 Earth MOID = .99845 AU 
 T_jup = 3.587 
[ 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 13.6 mag n/a MPO267742  

8508 (1991 CU1)          Discovered 1991-Feb-14 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 19980313/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 CU1 = 1967 GD = 1981 JN2 = 1986 VT5 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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