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120921 (1998 SW92)
Classification: Main-belt Asteroid          SPK-ID: 2120921
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1062946929137795 3.9102e-08  
a 2.326515443392555 8.3685e-09 au
q 2.079219198777978 9.3075e-08 au
i 2.558268819908667 3.8029e-06 deg
node 189.816588721222 8.6283e-05 deg
peri 167.1320995229532 8.8347e-05 deg
M 46.1692807890367 1.8497e-05 deg
tp 2458834.270558787101
(2019-Dec-16.77055879)
6.6431e-05 TDB
period 1296.156184673639
3.55
6.9935e-06
1.915e-08
d
yr
n .2777443060155941 1.4986e-09 deg/d
Q 2.573811688007133 9.2581e-09 au
  Orbit Determination Parameters
   # obs. used (total)      450  
   data-arc span      10243 days (28.04 yr)  
   first obs. used      1991-10-11  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57881  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 14:15:48  

Additional Information
 Earth MOID = 1.07497 au 
 Jupiter MOID = 2.82373 au 
 T_jup = 3.565 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO439780  

120921 (1998 SW92)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 SW92 = 1998 UW46 = 2000 FB4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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