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101456 (1998 WY4)
Classification: Outer Main-belt Asteroid          SPK-ID: 2101456
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2753785871174458 3.5743e-08  
a 3.205443204347398 2.4779e-08 au
q 2.322732783648993 1.2227e-07 au
i 16.29559173153432 5.9208e-06 deg
node 161.0575459095018 1.3581e-05 deg
peri 276.1620792581987 1.6865e-05 deg
M 260.8839394988692 1.106e-05 deg
tp 2459577.627923550552
(2021-Dec-29.12792355)
6.7077e-05 TDB
period 2096.189572383462
5.74
2.4306e-05
6.655e-08
d
yr
n .1717401921767332 1.9914e-09 deg/d
Q 4.088153625045804 3.1602e-08 au
  Orbit Determination Parameters
   # obs. used (total)      784  
   data-arc span      8003 days (21.91 yr)  
   first obs. used      1998-11-19  
   last obs. used      2020-10-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53049  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:30  

Additional Information
 Earth MOID = 1.4043 au 
 Jupiter MOID = 1.63526 au 
 T_jup = 3.072 
[ 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 14.3   n/a MPO449614  

101456 (1998 WY4)          Discovered 1998-Nov-19 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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