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266793 (2009 SQ277)
Classification: Main-belt Asteroid          SPK-ID: 2266793
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1143901523085108 4.4544e-08  
a 3.105286202725605 2.8878e-08 au
q 2.750072041034306 1.5102e-07 au
i 11.27849811588623 4.9741e-06 deg
node 176.1751006025846 2.1715e-05 deg
peri 259.2667530501048 3.0347e-05 deg
M 288.2845506955869 2.0009e-05 deg
tp 2459398.663183619657
(2021-Jul-03.16318362)
0.00011201 TDB
period 1998.715025749075
5.47
2.7881e-05
7.633e-08
d
yr
n .1801157220324993 2.5126e-09 deg/d
Q 3.460500364416904 3.2182e-08 au
  Orbit Determination Parameters
   # obs. used (total)      456  
   data-arc span      9395 days (25.72 yr)  
   first obs. used      1995-02-26  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53327  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 00:21:04  

Additional Information
 Earth MOID = 1.79289 au 
 Jupiter MOID = 1.89517 au 
 T_jup = 3.181 
[ 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 15.2   n/a MPO440312  

266793 (2009 SQ277)          Discovered 2009-Sep-25 by Spacewatch at Kitt Peak
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

[ show close-approach data ]
Alternate Designations
 2009 SQ277 = 1998 SK154 = 2006 GU13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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