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49345 (1998 WH4)
Classification: Main-belt Asteroid          SPK-ID: 2049345
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06254562144138653 5.8141e-08  
a 2.685010751702023 2.7029e-08 AU
q 2.517075085660016 1.536e-07 AU
i 4.311440649126873 6.2673e-06 deg
node 72.48613436111843 9.9176e-05 deg
peri 358.6754808656132 0.00011673 deg
M 180.2021887221441 6.2966e-05 deg
tp 2457603.100397363036
(2016-Aug-02.60039736)
0.0002834 JED
period 1607.005897330847
4.40
2.4266e-05
6.644e-08
d
yr
n .2240190907811485 3.3827e-09 deg/d
Q 2.852946417744031 2.872e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      913  
   data-arc span      6519 days (17.85 yr)  
   first obs. used      1996-05-11  
   last obs. used      2014-03-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56531  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:52:45  

Additional Information
 Earth MOID = 1.53056 AU 
 T_jup = 3.368 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4 mag n/a MPO263747  

49345 (1998 WH4)          Discovered 1998-Nov-18 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 WH4 = 1996 LM4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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