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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1324138973816994 6.7006e-08  
a 2.286375018537164 1.2194e-08 AU
q 1.983627191456503 1.5009e-07 AU
i 3.874999123769032 4.6316e-06 deg
node 276.5459959984706 0.00012146 deg
peri 228.6496256976696 0.00012419 deg
M 323.5283389854832 3.0724e-05 deg
tp 2457128.430079029861
(2015-Apr-15.93007903)
0.0001082 JED
period 1262.756539451791
3.46
1.0102e-05
2.766e-08
d
yr
n .2850905845684943 2.2807e-09 deg/d
Q 2.589122845617825 1.3809e-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 = .998909 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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