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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 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06254562228593524 5.8228e-08  
a 2.685010752931979 2.7482e-08 AU
q 2.517075084545421 1.5365e-07 AU
i 4.311440567251442 6.2682e-06 deg
node 72.48612047712096 0.00010101 deg
peri 358.6754913090109 0.00011894 deg
M 180.2021915342266 6.3862e-05 deg
tp 2457603.100385361652
(2016-Aug-02.60038536)
0.000287 JED
period 1607.005898435058
4.40
2.4673e-05
6.755e-08
d
yr
n .2240190906272198 3.4394e-09 deg/d
Q 2.852946421318538 2.9201e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      909  
   data-arc span      6500 days (17.80 yr)  
   first obs. used      1996-05-11  
   last obs. used      2014-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56613  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 11:50:46  

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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