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227266 (2005 SN121)
Classification: Main-belt Asteroid          SPK-ID: 2227266
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1549315898657027 4.2211e-08  
a 2.434670604689769 1.2302e-08 au
q 2.057463217105892 1.0203e-07 au
i 1.546432437066594 6.3946e-06 deg
node 153.4717873276428 0.00015711 deg
peri 111.1064515935022 0.00015864 deg
M 89.47478556444163 2.1489e-05 deg
tp 2458855.628813862318
(2020-Jan-07.12881386)
8.2509e-05 TDB
period 1387.582280598454
3.80
1.0517e-05
2.879e-08
d
yr
n .2594440740802302 1.9664e-09 deg/d
Q 2.811877992273647 1.4208e-08 au
  Orbit Determination Parameters
   # obs. used (total)      299  
   data-arc span      8423 days (23.06 yr)  
   first obs. used      1997-09-28  
   last obs. used      2020-10-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55895  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 02:28:02  

Additional Information
 Earth MOID = 1.04056 au 
 Jupiter MOID = 2.25967 au 
 T_jup = 3.488 
[ 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 17.23   n/a E2021B55  

227266 (2005 SN121)          Discovered 2005-Sep-29 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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