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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08950064949160055 4.999e-08  
a 1.929029259298939 7.6716e-09 au
q 1.756379887703383 9.5393e-08 au
i 23.92796251091031 5.8246e-06 deg
node 98.62928416140282 1.0898e-05 deg
peri 338.5891928273872 3.343e-05 deg
M 69.3905241404125 3.0456e-05 deg
tp 2459011.872800653892
(2020-Jun-11.37280065)
8.2612e-05 TDB
period 978.6032402232699
2.68
5.8378e-06
1.598e-08
d
yr
n .3678712528254713 2.1945e-09 deg/d
Q 2.101678630894495 8.3582e-09 au
  Orbit Determination Parameters
   # obs. used (total)      772  
   data-arc span      8146 days (22.30 yr)  
   first obs. used      1998-11-17  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53469  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:36:52  

Additional Information
 Earth MOID = .780039 au 
 Jupiter MOID = 3.10023 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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