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JPL Small-Body Database Browser
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27745 (1990 WS)
Classification: Main-belt Asteroid          SPK-ID: 2027745
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .107087338806355 4.8986e-08  
a 2.385808483353312 9.387e-09 au
q 2.13031860196938 1.2067e-07 au
i 6.474034478568997 5.5679e-06 deg
node 177.5476317482455 3.1329e-05 deg
peri 209.8646571746349 3.6885e-05 deg
M 26.73018159890264 1.9889e-05 deg
tp 2458900.557271194188
(2020-Feb-21.05727119)
7.4195e-05 TDB
period 1346.020872958436
3.69
7.9439e-06
2.175e-08
d
yr
n .2674549906560895 1.5785e-09 deg/d
Q 2.641298364737244 1.0392e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1034  
   data-arc span      12088 days (33.10 yr)  
   first obs. used      1986-10-08  
   last obs. used      2019-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55889  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:07:38  

Additional Information
 Earth MOID = 1.13662 au 
 Jupiter MOID = 2.79153 au 
 T_jup = 3.519 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456713.5 (2014-Feb-25.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1082367109731143 4.9248e-08  
q 2.127147209830359 1.2149e-07 au
tp 2456206.830387612942
(2012-Oct-06.33038761)
6.9791e-05 TDB
node 177.6276266574213 3.1291e-05 deg
peri 209.3524024172285 3.6682e-05 deg
i 6.478064062817667 5.5726e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1034  
   data-arc span      12088 days (33.10 yr)  
   first obs. used      1986-10-08  
   last obs. used      2019-11-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55889  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 01:07:38  

Additional Information
 Jupiter MOID = 2.79153 au 
 T_jup = 3.519 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.425395586645433E-15 -5.971395326227264E-15 -1.054341210876167E-12 -1.553240172299885E-17 -2.841865590786478E-13 -3.142120735895262E-15
q -5.971395326227264E-15 1.475946415754386E-14 2.563311616395599E-12 -1.290385345121682E-17 6.959884244669535E-13 7.88836014740431E-15
tp -1.054341210876167E-12 2.563311616395599E-12 4.870839435998622E-9 6.33779373780924E-12 1.34295012468563E-9 1.266402338276281E-12
node -1.553240172299885E-17 -1.290385345121682E-17 6.33779373780924E-12 9.791171806692936E-10 -9.704264859573824E-10 1.377006477515757E-11
peri -2.841865590786478E-13 6.959884244669535E-13 1.34295012468563E-9 -9.704264859573824E-10 1.345567223411561E-9 -1.330639349266708E-11
i -3.142120735895262E-15 7.88836014740431E-15 1.266402338276281E-12 1.377006477515757E-11 -1.330639349266708E-11 3.105404909052781E-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 15.1   n/a MPO502365  

27745 (1990 WS)          Discovered 1990-Nov-18 by Elst, E. W. at La Silla
Reference: 20010902/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1990 WS = 1986 TV5 = 1997 XD 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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