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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2163553992312323 4.2555e-08  
a 2.419407187430274 8.4736e-09 au
q 1.895955379490884 1.0361e-07 au
i .7053620620153713 3.9414e-06 deg
node 276.8242511218041 0.00035885 deg
peri 115.0952367562959 0.00035896 deg
M 264.180964801079 9.361e-06 deg
tp 2459366.356832022310
(2021-May-31.85683202)
3.6653e-05 TDB
period 1374.554223538192
3.76
7.2213e-06
1.977e-08
d
yr
n .2619030910787474 1.3759e-09 deg/d
Q 2.942858995369663 1.0307e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1013  
   data-arc span      11876 days (32.51 yr)  
   first obs. used      1987-12-22  
   last obs. used      2020-06-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51916  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:33:44  

Additional Information
 Earth MOID = .901958 au 
 Jupiter MOID = 2.49852 au 
 T_jup = 3.482 
[ 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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