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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457383.5 (2015-Dec-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06797573066983657 4.0611e-08  
q 2.74542214554019 1.261e-07 au
tp 2457488.662688971934
(2016-Apr-10.16268897)
0.00017515 TDB
node 145.6062956953978 8.8893e-05 deg
peri 222.9589074970625 9.5153e-05 deg
i 2.723813534705204 4.6822e-06 deg
  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
 Jupiter MOID = 2.19609 au 
 T_jup = 3.266 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.649269641050144E-15 -5.058071731726058E-15 -9.400074268817431E-13 -5.396740850300854E-15 -1.408521531028311E-13 2.880333996319412E-16
q -5.058071731726058E-15 1.590219845688189E-14 2.71647486874006E-12 1.551057163409321E-14 3.949229008141511E-13 -6.345903964678152E-16
tp -9.400074268817431E-13 2.71647486874006E-12 3.067839292459929E-8 -3.466365024866057E-12 5.964065095174654E-9 -2.159532377208252E-13
node -5.396740850300854E-15 1.551057163409321E-14 -3.466365024866057E-12 7.901988937640407E-9 -7.893445918119078E-9 -1.779239314817984E-11
peri -1.408521531028311E-13 3.949229008141511E-13 5.964065095174654E-9 -7.893445918119078E-9 9.054010996962473E-9 1.773915129543401E-11
i 2.880333996319412E-16 -6.345903964678152E-16 -2.159532377208252E-13 -1.779239314817984E-11 1.773915129543401E-11 2.192265097337541E-11

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