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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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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 
[ 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 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

[ show close-approach data ]
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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