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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1331447171683703 1.2765e-08  
a 2.285659005629176 6.0128e-09 au
q 1.981335583781341 2.9424e-08 au
i 3.874271484114547 9.4416e-07 deg
node 276.4874896815571 2.3918e-06 deg
peri 228.893493157001 5.7034e-06 deg
M 286.3430860721607 6.0644e-06 deg
tp 2459654.741837708620
(2022-Mar-16.24183771)
2.1907e-05 TDB
period 1262.163408939205
3.46
4.9805e-06
1.364e-08
d
yr
n .285224557652614 1.1255e-09 deg/d
Q 2.589982427477011 6.8134e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2576  
   data-arc span      24019 days (65.76 yr)  
   first obs. used      1955-10-25  
   last obs. used      2021-07-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41493  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 23:26:19  

Additional Information
 Earth MOID = .996809 au 
 Jupiter MOID = 2.42902 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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