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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1330447180205117 1.2757e-08  
a 2.285648340385104 6.0501e-09 au
q 1.981554901444518 2.9388e-08 au
i 3.874288871394064 9.4418e-07 deg
node 276.4880303234497 2.3916e-06 deg
peri 228.9054061665913 5.7112e-06 deg
M 230.4142698670524 5.9367e-06 deg
tp 2459654.825616978478
(2022-Mar-16.32561698)
2.1927e-05 TDB
period 1262.154574770321
3.46
5.0114e-06
1.372e-08
d
yr
n .2852265540181642 1.1325e-09 deg/d
Q 2.589741779325691 6.8551e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2568  
   data-arc span      23850 days (65.30 yr)  
   first obs. used      1955-10-25  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41391  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 20:40:08  

Additional Information
 Earth MOID = .996198 au 
 Jupiter MOID = 2.42973 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 13.82   n/a E2021B10  
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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