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187699 (2008 EF1)
Classification: Main-belt Asteroid          SPK-ID: 2187699
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1275049233224457 3.7257e-08  
a 2.427660956158894 1.3779e-08 au
q 2.118122232090959 8.9342e-08 au
i 3.316869243276707 4.3865e-06 deg
node 47.36970947732236 8.8646e-05 deg
peri 161.4609774224656 9.1313e-05 deg
M 108.4125213053047 2.3077e-05 deg
tp 2458784.438604554865
(2019-Oct-27.93860456)
8.7152e-05 TDB
period 1381.594123601657
3.78
1.1763e-05
3.221e-08
d
yr
n .2605685663033376 2.2185e-09 deg/d
Q 2.737199680226829 1.5536e-08 au
  Orbit Determination Parameters
   # obs. used (total)      297  
   data-arc span      6546 days (17.92 yr)  
   first obs. used      2002-10-09  
   last obs. used      2020-09-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54464  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:29  

Additional Information
 Earth MOID = 1.11226 au 
 Jupiter MOID = 2.222 au 
 T_jup = 3.496 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457738.5 (2016-Dec-16.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1267765011668002 3.7286e-08  
q 2.119472232096784 8.9152e-08 au
tp 2457401.796371561601
(2016-Jan-14.29637156)
8.3668e-05 TDB
node 47.42848336568162 8.8564e-05 deg
peri 161.145857083494 9.1261e-05 deg
i 3.318634585888623 4.3888e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      297  
   data-arc span      6546 days (17.92 yr)  
   first obs. used      2002-10-09  
   last obs. used      2020-09-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54464  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:56:29  

Additional Information
 Jupiter MOID = 2.222 au 
 T_jup = 3.496 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.390261946109929E-15 -3.294877784565617E-15 1.272075667980717E-13 6.746992862367827E-15 5.613049744022806E-14 1.463837345184906E-16
q -3.294877784565617E-15 7.948006584170346E-15 -3.444227677143579E-14 -1.374777549487023E-14 -5.69817917363661E-14 -1.138692456028196E-16
tp 1.272075667980717E-13 -3.444227677143579E-14 7.000365748388506E-9 8.798328616321998E-12 1.871325427787252E-9 2.643801328308885E-12
node 6.746992862367827E-15 -1.374777549487023E-14 8.798328616321998E-12 7.8435245149787E-9 -7.827519621110418E-9 7.081672160606432E-11
peri 5.613049744022806E-14 -5.69817917363661E-14 1.871325427787252E-9 -7.827519621110418E-9 8.328614914975221E-9 -6.995814446863638E-11
i 1.463837345184906E-16 -1.138692456028196E-16 2.643801328308885E-12 7.081672160606432E-11 -6.995814446863638E-11 1.926128703322989E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.77   n/a E2021B55  

187699 (2008 EF1)          Discovered 2008-Mar-03 by Chante-Perdrix at Chante-Perdrix
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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