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442346 (2011 SW208)
Classification: Main-belt Asteroid          SPK-ID: 2442346
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2378417101020253 2.5313e-07  
a 2.620996497053823 8.7506e-08 au
q 1.997614208023124 7.2069e-07 au
i 3.314996746133322 1.6118e-05 deg
node 122.070387238343 0.00016757 deg
peri 241.2370243600786 0.00018179 deg
M 25.33952684883526 7.3123e-05 deg
tp 2458891.407702500511
(2020-Feb-11.90770250)
0.00030991 TDB
period 1549.880048435923
4.24
7.7617e-05
2.125e-07
d
yr
n .2322760399188941 1.1632e-08 deg/d
Q 3.244378786084522 1.0832e-07 au
  Orbit Determination Parameters
   # obs. used (total)      60  
   data-arc span      3380 days (9.25 yr)  
   first obs. used      2007-11-18  
   last obs. used      2017-02-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4984  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:29:32  

Additional Information
 Earth MOID = .997746 au 
 Jupiter MOID = 2.21585 au 
 T_jup = 3.362 
[ 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 17.8   n/a MPO402745  

442346 (2011 SW208)          Discovered 2007-Nov-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-09-02

Alternate Designations
 2011 SW208 = 2007 XO30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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