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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1779391015350712 4.9922e-08  
a 2.365383093439728 9.8403e-09 au
q 1.944488951006816 1.1955e-07 au
i 2.082662709062431 3.789e-06 deg
node 118.9414821230436 0.00016805 deg
peri 285.0370874542265 0.00016858 deg
M 181.573348877313 1.5114e-05 deg
tp 2460055.079007056612
(2023-Apr-20.57900706)
5.8284e-05 TDB
period 1328.77258553352
3.64
8.2918e-06
2.27e-08
d
yr
n .2709267213361834 1.6906e-09 deg/d
Q 2.786277235872642 1.1591e-08 au
  Orbit Determination Parameters
   # obs. used (total)      419  
   data-arc span      8627 days (23.62 yr)  
   first obs. used      1997-10-28  
   last obs. used      2021-06-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57665  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 23:39:27  

Additional Information
 Earth MOID = .954185 au 
 Jupiter MOID = 2.60834 au 
 T_jup = 3.526 
[ 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 16.87   n/a MPO637237  

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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