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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1326389585520271 3.1808e-08  
a 2.286467540322976 6.8149e-09 au
q 1.983192867011521 7.2375e-08 au
i 3.874486036685338 3.2095e-06 deg
node 276.4942862420397 6.4103e-05 deg
peri 228.8712941459589 6.62e-05 deg
M 173.403998386959 1.6956e-05 deg
tp 2458392.221321288068
(2018-Sep-30.72132129)
5.8697e-05 TDB
period 1262.833189391809
3.46
5.6459e-06
1.546e-08
d
yr
n .285073280480836 1.2745e-09 deg/d
Q 2.58974221363443 7.7188e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2175  
   data-arc span      23659 days (64.77 yr)  
   first obs. used      1955-10-25  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43259  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 23:59:35  

Additional Information
 Earth MOID = .997965 au 
 Jupiter MOID = 2.43051 au 
 T_jup = 3.587 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO337328  
diameter diameter 4.834 km 0.167 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.208   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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

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