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190350 (1998 WD28)
Classification: Main-belt Asteroid          SPK-ID: 2190350
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1594764842227566 3.2591e-08  
a 2.524608663354181 1.3238e-08 au
q 2.121992949684143 7.7297e-08 au
i 7.640543414201145 9.2549e-06 deg
node 230.8414293440587 2.7659e-05 deg
peri 263.0613514915651 4.8603e-05 deg
M 117.1048007590871 3.7204e-05 deg
tp 2458723.891560942372
(2019-Aug-28.39156094)
0.00015091 TDB
period 1465.175099129587
4.01
1.1524e-05
3.155e-08
d
yr
n .2457044214127474 1.9326e-09 deg/d
Q 2.927224377024219 1.5349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      500  
   data-arc span      7888 days (21.60 yr)  
   first obs. used      1998-11-18  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55125  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:07:16  

Additional Information
 Earth MOID = 1.1522 au 
 Jupiter MOID = 2.18364 au 
 T_jup = 3.424 
[ 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 16.60   n/a E2021B55  

190350 (1998 WD28)          Discovered 1998-Nov-18 by Spacewatch at Kitt Peak
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

Alternate Designations
 1998 WD28 = 2006 TW91 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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