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101455 (1998 WN4)
Classification: Inner Main-belt Asteroid          SPK-ID: 2101455
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08942742810552824 5.0914e-08  
a 1.928946662573596 7.8532e-09 au
q 1.756445923586897 9.7527e-08 au
i 23.92875340444247 6.2902e-06 deg
node 98.63001828909 1.0911e-05 deg
peri 338.625850834434 3.4543e-05 deg
M 355.7863630217014 3.1187e-05 deg
tp 2459011.953372126919
(2020-Jun-11.45337213)
8.4779e-05 TDB
period 978.5403884878001
2.68
5.9758e-06
1.636e-08
d
yr
n .3678948812284903 2.2467e-09 deg/d
Q 2.101447401560295 8.5555e-09 au
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      8003 days (21.91 yr)  
   first obs. used      1998-11-17  
   last obs. used      2020-10-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53944  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:30  

Additional Information
 Earth MOID = .780325 au 
 Jupiter MOID = 3.10033 au 
 T_jup = 3.806 
[ 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 16.1   n/a MPO436474  

101455 (1998 WN4)          Discovered 1998-Nov-17 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 WN4 = 2001 XB68 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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