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26992 (1997 WE47)
Classification: Main-belt Asteroid          SPK-ID: 2026992
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07618119397222466 3.9445e-08  
a 3.06186035331064 1.7605e-08 au
q 2.828604175819218 1.2124e-07 au
i 11.78459531598445 3.8236e-06 deg
node 86.83124168777246 2.1746e-05 deg
peri 339.0417508522729 3.5413e-05 deg
M 140.498323873536 2.7818e-05 deg
tp 2458632.760700958067
(2019-May-29.26070096)
0.00015032 TDB
period 1956.93542865734
5.36
1.6878e-05
4.621e-08
d
yr
n .1839611030226977 1.5866e-09 deg/d
Q 3.295116530802062 1.8946e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1507  
   data-arc span      8622 days (23.61 yr)  
   first obs. used      1997-11-26  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49664  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 15:38:13  

Additional Information
 Earth MOID = 1.84602 au 
 Jupiter MOID = 1.96615 au 
 T_jup = 3.197 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457591.5 (2016-Jul-22.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07563971525794282 3.9151e-08  
q 2.83023063304295 1.2017e-07 au
tp 2456680.854720517430
(2014-Jan-23.35472052)
0.00015158 TDB
node 86.85185327443482 2.1744e-05 deg
peri 340.0820469817815 3.5739e-05 deg
i 11.78497383737235 3.8237e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1507  
   data-arc span      8622 days (23.61 yr)  
   first obs. used      1997-11-26  
   last obs. used      2021-07-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49664  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 15:38:13  

Additional Information
 Jupiter MOID = 1.96615 au 
 T_jup = 3.197 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.532825013247605E-15 -4.662250784964136E-15 -1.951624294676694E-12 4.403479915432114E-15 -4.100469623314838E-13 3.118641707813238E-16
q -4.662250784964136E-15 1.444156028427759E-14 5.946320239995825E-12 -1.409111913131415E-14 1.271705879930293E-12 1.024679699217804E-17
tp -1.951624294676694E-12 5.946320239995825E-12 2.297668641046653E-8 4.203281548435591E-12 4.322105679997202E-9 -5.655139023296203E-12
node 4.403479915432114E-15 -1.409111913131415E-14 4.203281548435591E-12 4.727892396456573E-10 -4.621015256516718E-10 -2.138599351933623E-11
peri -4.100469623314838E-13 1.271705879930293E-12 4.322105679997202E-9 -4.621015256516718E-10 1.277298957756718E-9 1.999166491340262E-11
i 3.118641707813238E-16 1.024679699217804E-17 -5.655139023296203E-12 -2.138599351933623E-11 1.999166491340262E-11 1.462067261110044E-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 13.95   n/a MPO636459  

26992 (1997 WE47)          Discovered 1997-Nov-26 by LINEAR at Socorro
Reference: 20010804/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 WE47 = 1999 CP52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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