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JPL Small-Body Database Browser
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8507 (1991 CB1)
Classification: Apollo [NEO]          SPK-ID: 2008507
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 63 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5945860287483161 9.3399e-08  
a 1.68710262313059 1.0276e-08 au
q .6839749743525055 1.5772e-07 au
i 14.58742107867623 1.3583e-05 deg
node 317.4170200845292 2.2144e-05 deg
peri 345.7580038420642 2.535e-05 deg
M 189.8869313731871 3.481e-05 deg
tp 2458978.721189273466
(2020-May-09.22118927)
8.0141e-05 TDB
period 800.4066309399725
2.19
7.3128e-06
2.002e-08
d
yr
n .4497713862980212 4.1093e-09 deg/d
Q 2.690230271908675 1.6386e-08 au
  Orbit Determination Parameters
   # obs. used (total)      222  
   data-arc span      10211 days (27.96 yr)  
   first obs. used      1991-02-15  
   last obs. used      2019-01-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60809  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Feb-01 08:40:16  

Additional Information
 Earth MOID = .219916 au 
 Jupiter MOID = 2.59453 au 
 T_jup = 3.970 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.2   n/a MPO395082  

8507 (1991 CB1)          Discovered 1991-Feb-15 by Spacewatch at Kitt Peak
Reference: 19980313/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 CB1 = 1993 BV3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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