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312832 (2011 SN257)
Classification: Main-belt Asteroid          SPK-ID: 2312832
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1203355311544623 9.3125e-08  
a 2.348147006802752 2.3052e-08 au
q 2.065581489510382 2.2767e-07 au
i 5.854396456925464 6.3247e-06 deg
node 233.1438430379371 9.7399e-05 deg
peri 144.6377990391089 0.00010274 deg
M 256.1203337604235 3.3599e-05 deg
tp 2459775.740225061273
(2022-Jul-15.24022506)
0.00012422 TDB
period 1314.275314547012
3.60
1.9354e-05
5.299e-08
d
yr
n .2739152109267762 4.0336e-09 deg/d
Q 2.630712524095122 2.5826e-08 au
  Orbit Determination Parameters
   # obs. used (total)      110  
   data-arc span      6557 days (17.95 yr)  
   first obs. used      2002-03-05  
   last obs. used      2020-02-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56193  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 06:31:32  

Additional Information
 Earth MOID = 1.07037 au 
 Jupiter MOID = 2.83059 au 
 T_jup = 3.543 
[ 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 17.76   n/a E2021B25  

312832 (2011 SN257)          Discovered 2009-Jan-01 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2011 SN257 = 2010 JP168 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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