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74353 (1998 WT4)
Classification: Main-belt Asteroid          SPK-ID: 2074353
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3246593057309838 4.926e-08  
a 2.774401138634377 2.0683e-08 au
q 1.873665991146089 1.4018e-07 au
i 24.90868711633479 6.435e-06 deg
node 110.0253135734462 1.4572e-05 deg
peri 293.039200760133 1.8122e-05 deg
M 251.8988862657906 1.4685e-05 deg
tp 2459507.350612369164
(2021-Oct-19.85061237)
7.302e-05 TDB
period 1687.921744280387
4.62
1.8875e-05
5.168e-08
d
yr
n .2132800298472837 2.385e-09 deg/d
Q 3.675136286122664 2.7398e-08 au
  Orbit Determination Parameters
   # obs. used (total)      461  
   data-arc span      7481 days (20.48 yr)  
   first obs. used      1998-11-14  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56448  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:28  

Additional Information
 Earth MOID = 1.01005 au 
 Jupiter MOID = 2.1148 au 
 T_jup = 3.128 
[ 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 14.9   n/a MPO439561  

74353 (1998 WT4)          Discovered 1998-Nov-18 by CSS at Catalina
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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