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90981 (1997 WY54)
Classification: Main-belt Asteroid          SPK-ID: 2090981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1776613710294032 5.0101e-08  
a 2.366081062978183 1.0321e-08 au
q 1.945719857362771 1.1979e-07 au
i 2.082613640484278 4.4755e-06 deg
node 118.93981520956 0.00017145 deg
peri 285.1094581052371 0.00017224 deg
M 74.24372789886324 1.6056e-05 deg
tp 2458726.342503269262
(2019-Aug-30.84250327)
5.8657e-05 TDB
period 1329.360763747111
3.64
8.6985e-06
2.382e-08
d
yr
n .2708068492899224 1.772e-09 deg/d
Q 2.786442268593595 1.2155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      386  
   data-arc span      8104 days (22.19 yr)  
   first obs. used      1997-10-28  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58811  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 13:59:50  

Additional Information
 Earth MOID = .955998 au 
 Jupiter MOID = 2.60597 au 
 T_jup = 3.525 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.0   n/a MPO359379  

90981 (1997 WY54)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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