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266780 (2009 SB218)
Classification: Main-belt Asteroid          SPK-ID: 2266780
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1604383464188243 5.8883e-08  
a 2.449807598001833 1.6e-08 au
q 2.056764517934147 1.4064e-07 au
i 3.288093207122085 5.8063e-06 deg
node 225.9964719879836 7.5922e-05 deg
peri 154.5354470405764 7.7245e-05 deg
M 264.0501382824706 1.3389e-05 deg
tp 2459373.783028673537
(2021-Jun-08.28302867)
5.3303e-05 TDB
period 1400.5428243147
3.83
1.3721e-05
3.757e-08
d
yr
n .2570431933605112 2.5182e-09 deg/d
Q 2.842850678069519 1.8567e-08 au
  Orbit Determination Parameters
   # obs. used (total)      400  
   data-arc span      8418 days (23.05 yr)  
   first obs. used      1996-03-20  
   last obs. used      2019-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48885  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:37:19  

Additional Information
 Earth MOID = 1.06007 au 
 Jupiter MOID = 2.61826 au 
 T_jup = 3.476 
[ 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 16.4   n/a MPO433732  
rotation period rot_per 5.125 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

266780 (2009 SB218)          Discovered 2009-Sep-24 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20110218/Numbers.arcLast Updated: 2011-02-22

Alternate Designations
 2009 SB218 = 2009 RU72 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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