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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2843315733479628 9.0585e-08  
a 2.684636390146331 2.0662e-08 AU
q 1.921309501468829 2.4723e-07 AU
i 5.681426301411322 9.1575e-06 deg
node 50.07018642744874 8.603e-05 deg
peri 333.5699295697939 8.6781e-05 deg
M 248.4027403808404 1.3797e-05 deg
tp 2457498.555414057152
(2016-Apr-20.05541406)
6.4992e-05 JED
period 1606.669820320495
4.40
1.8548e-05
5.078e-08
d
yr
n .2240659502325051 2.5868e-09 deg/d
Q 3.447963278823832 2.6537e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      356  
   data-arc span      6593 days (18.05 yr)  
   first obs. used      1996-05-16  
   last obs. used      2014-06-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55647  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jun-04 18:35:44  

Additional Information
 Earth MOID = .92701 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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