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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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06254557124738586 5.299e-08  
a 2.685010735087401 2.3829e-08 AU
q 2.517075204855996 1.3991e-07 AU
i 4.311436876320524 5.7548e-06 deg
node 72.4861158821757 8.4184e-05 deg
peri 358.6755122083652 9.9855e-05 deg
M 180.2021797611288 5.6704e-05 deg
tp 2457603.100429914523
(2016-Aug-02.60042991)
0.00025731 JED
period 1607.00588241482
4.40
2.1393e-05
5.857e-08
d
yr
n .2240190928604656 2.9822e-09 deg/d
Q 2.852946265318806 2.532e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      935  
   data-arc span      6619 days (18.12 yr)  
   first obs. used      1996-05-11  
   last obs. used      2014-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54809  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:34:27  

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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