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JPL Small-Body Database Browser
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277261 (2005 SS20)
Classification: Main-belt Asteroid          SPK-ID: 2277261
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .144892212356155 1.5348e-07  
a 2.328555054570884 1.5462e-08 au
q 1.991165561121002 3.6751e-07 au
i 7.31168548744414 9.5825e-06 deg
node 34.01454553016536 5.5243e-05 deg
peri 320.1162007627902 6.6004e-05 deg
M 313.0904800768673 2.6215e-05 deg
tp 2458769.616771900052
(2019-Oct-13.11677190)
9.3991e-05 TDB
period 1297.861030847934
3.55
1.2927e-05
3.539e-08
d
yr
n .2773794662474769 2.7628e-09 deg/d
Q 2.665944548020767 1.7703e-08 au
  Orbit Determination Parameters
   # obs. used (total)      210  
   data-arc span      5669 days (15.52 yr)  
   first obs. used      2004-04-24  
   last obs. used      2019-11-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53001  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 05:22:55  

Additional Information
 Earth MOID = .992527 au 
 Jupiter MOID = 2.77914 au 
 T_jup = 3.548 
[ 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 17.1   n/a MPO245604  

277261 (2005 SS20)          Discovered 2005-Sep-25 by Spacewatch at Kitt Peak
Reference: 20110517/Numbers.arcLast Updated: 2011-05-20

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