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21950 (1999 VS158)
Classification: Main-belt Asteroid          SPK-ID: 2021950
[ 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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02204060193484346 3.5876e-08  
a 3.046077575852723 1.8658e-08 au
q 2.9789401925407 1.1771e-07 au
i 8.700043297188948 3.8932e-06 deg
node 240.6608363360899 2.5873e-05 deg
peri 200.9697694517884 0.00010878 deg
M 310.549010010062 0.00010439 deg
tp 2459467.236443223574
(2021-Sep-09.73644322)		 0.00056296 TDB
period 1941.824007568411
5.32		 1.7841e-05
4.885e-08		 d
yr
n .1853927022206296 1.7033e-09 deg/d
Q 3.113214959164746 1.9069e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1574  
   data-arc span      15388 days (42.13 yr)  
   first obs. used      1978-11-29  
   last obs. used      2021-01-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49582  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:55:16  

Additional Information
 Earth MOID = 1.99464 au 
 Jupiter MOID = 1.99665 au 
 T_jup = 3.220 
[ 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 13.84   n/a E2021B10  

21950 (1999 VS158)          Discovered 1999-Nov-14 by LINEAR at Socorro
Reference: 20010208/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 VS158 = 1978 WQ5 = 1998 QQ79 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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