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277320 (2005 SJ218)
Classification: Main-belt Asteroid          SPK-ID: 2277320
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1724666627614761 1.1603e-07  
a 2.312502478799061 9.9479e-09 au
q 1.913672893652946 2.7146e-07 au
i 4.832940465225418 8.6867e-06 deg
node 159.5226589701205 8.768e-05 deg
peri 194.7650459962434 8.9554e-05 deg
M 81.67861717651611 1.7573e-05 deg
tp 2458709.074457889333
(2019-Aug-13.57445789)
6.3237e-05 TDB
period 1284.463410210675
3.52
8.2883e-06
2.269e-08
d
yr
n .2802726781769156 1.8085e-09 deg/d
Q 2.711332063945176 1.1664e-08 au
  Orbit Determination Parameters
   # obs. used (total)      348  
   data-arc span      8689 days (23.79 yr)  
   first obs. used      1996-01-21  
   last obs. used      2019-11-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55782  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 20:10:41  

Additional Information
 Earth MOID = .908982 au 
 Jupiter MOID = 2.72335 au 
 T_jup = 3.559 
[ 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 16.8   n/a MPO503247  

277320 (2005 SJ218)          Discovered 2005-Sep-30 by NEAT at Palomar
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

Alternate Designations
 2005 SJ218 = 1998 UR25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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