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JPL Small-Body Database Browser
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49213 (1998 SW122)
Classification: Main-belt Asteroid          SPK-ID: 2049213
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2172926859328865 4.308e-08  
a 2.417386732437643 8.7189e-09 au
q 1.892106276407743 1.0495e-07 au
i .7053747834676973 3.9482e-06 deg
node 276.8359580395169 0.00037084 deg
peri 115.2086750830635 0.00037095 deg
M 159.2326338738998 9.4287e-06 deg
tp 2457993.278407791016
(2017-Aug-27.77840779)
3.4694e-05 TDB
period 1372.832740858566
3.76
7.4272e-06
2.033e-08
d
yr
n .2622315080967962 1.4187e-09 deg/d
Q 2.942667188467542 1.0613e-08 au
  Orbit Determination Parameters
   # obs. used (total)      997  
   data-arc span      11463 days (31.38 yr)  
   first obs. used      1987-12-22  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52353  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:40:22  

Additional Information
 Earth MOID = .89748 au 
 Jupiter MOID = 2.49627 au 
 T_jup = 3.483 
[ 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 15.5   n/a MPO337651  

49213 (1998 SW122)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SW122 = 1987 YA1 = 1988 AQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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