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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06204893818930055 4.7499e-08  
a 2.684627231128127 1.9747e-08 au
q 2.518048962002545 1.3047e-07 au
i 4.311200842562529 5.1827e-06 deg
node 72.47256031080627 8.2379e-05 deg
peri 358.8262359570531 9.754e-05 deg
M 359.2342879196408 5.4526e-05 deg
tp 2457603.917333874535
(2016-Aug-03.41733387)
0.00024336 JED
period 1606.661598254203
4.40
1.7727e-05
4.853e-08
d
yr
n .2240670968865974 2.4722e-09 deg/d
Q 2.851205500253709 2.0973e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1071  
   data-arc span      7194 days (19.70 yr)  
   first obs. used      1996-05-11  
   last obs. used      2016-01-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .5433  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Feb-25 23:03:42  

Additional Information
 Earth MOID = 1.53084 au 
 Jupiter MOID = 2.32239 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 13.5 mag n/a MPO299295  

49345 (1998 WH4)          Discovered 1998-Nov-18 by Ueda, S., Kaneda, H. at Kushiro
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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