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187676 (2008 CG91)
Classification: Main-belt Asteroid          SPK-ID: 2187676
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06462728379606851 4.08e-08  
a 2.946180132947433 2.2087e-08 au
q 2.7557765133811 1.262e-07 au
i 2.728439886106991 4.6891e-06 deg
node 145.4623969751238 8.8587e-05 deg
peri 221.9568680794952 9.5481e-05 deg
M 334.6898409820861 3.5974e-05 deg
tp 2459330.361299580526
(2021-Apr-25.86129958)
0.00018473 TDB
period 1847.087085304397
5.06
2.0771e-05
5.687e-08
d
yr
n .1949014764188406 2.1918e-09 deg/d
Q 3.136583752513765 2.3515e-08 au
  Orbit Determination Parameters
   # obs. used (total)      322  
   data-arc span      7432 days (20.35 yr)  
   first obs. used      2000-07-29  
   last obs. used      2020-12-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59619  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:23  

Additional Information
 Earth MOID = 1.7532 au 
 Jupiter MOID = 2.19609 au 
 T_jup = 3.266 
[ 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 16.10   n/a E2021B55  

187676 (2008 CG91)          Discovered 2008-Feb-08 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1934-Feb-24 14:35 00:12 Psych 0.0366229209577085 0.036598494946067 0.0366473574258563 1.08565103822771 1.08565073392207 2427493.107504307 12.2621476608826 1529.49581691798 73.1881002543753 -38.5739142568254 46200.8443405338 T 17 CATAB v2.0f-lin.ifort 2021-Apr-13 21:56:24 2021-Apr-13 21:56
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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