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74354 (1998 WA6)
Classification: Main-belt Asteroid          SPK-ID: 2074354
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2841154508559074 7.9303e-08  
a 2.684817384458194 2.0205e-08 au
q 1.922019282807076 2.1944e-07 au
i 5.680962730090003 7.3008e-06 deg
node 50.06053241176171 7.3858e-05 deg
peri 333.5201462913825 7.4755e-05 deg
M 22.85846299086779 1.4697e-05 deg
tp 2457498.473009138617
(2016-Apr-19.97300914)
6.4842e-05 JED
period 1606.832302100615
4.40
1.8139e-05
4.966e-08
d
yr
n .2240432928373242 2.5291e-09 deg/d
Q 3.447615486109312 2.5946e-08 au
  Orbit Determination Parameters
   # obs. used (total)      378  
   data-arc span      7108 days (19.46 yr)  
   first obs. used      1996-05-16  
   last obs. used      2015-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54433  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Nov-30 18:25:03  

Additional Information
 Earth MOID = .926528 au 
 Jupiter MOID = 2.00613 au 
 T_jup = 3.309 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2 mag n/a MPO257338  

74354 (1998 WA6)          Discovered 1998-Nov-18 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WA6 = 2002 QA43 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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