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49370 (1998 WS21)
Classification: Main-belt Asteroid          SPK-ID: 2049370
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1315332061380433 3.5972e-08  
a 2.601946154801469 9.3046e-09 au
q 2.259703834861879 9.48e-08 au
i 1.939954811716348 3.8876e-06 deg
node 276.7540057678457 0.00010782 deg
peri 163.5136961378317 0.00010887 deg
M 28.72437170432304 1.3724e-05 deg
tp 2458878.181000104183
(2020-Jan-29.68100010)
5.843e-05 TDB
period 1533.013164422562
4.20
8.2231e-06
2.251e-08
d
yr
n .2348316429073854 1.2596e-09 deg/d
Q 2.94418847474106 1.0528e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1153  
   data-arc span      10682 days (29.25 yr)  
   first obs. used      1991-01-17  
   last obs. used      2020-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50329  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:33:00  

Additional Information
 Earth MOID = 1.27552 au 
 Jupiter MOID = 2.27305 au 
 T_jup = 3.401 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO309532  

49370 (1998 WS21)          Discovered 1998-Nov-18 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 WS21 = 1991 BN1 = 2000 GZ110 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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