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541557 (2011 SK117)
Classification: Main-belt Asteroid          SPK-ID: 2541557
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2666406578514914 5.6249e-07  
a 2.562435966974246 8.2976e-08 au
q 1.879186355037911 1.4698e-06 au
i 11.22707985233602 1.8171e-05 deg
node 353.9659640563481 2.5349e-05 deg
peri 323.722612282921 0.00024998 deg
M 124.33764508628 0.00013314 deg
tp 2458683.038436772436
(2019-Jul-18.53843677)
0.00056709 TDB
period 1498.228172430448
4.10
7.2772e-05
1.992e-07
d
yr
n .240283827673593 1.1671e-08 deg/d
Q 3.245685578910582 1.051e-07 au
  Orbit Determination Parameters
   # obs. used (total)      118  
   data-arc span      4434 days (12.14 yr)  
   first obs. used      2007-09-25  
   last obs. used      2019-11-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51129  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 20:23:39  

Additional Information
 Earth MOID = .877708 au 
 Jupiter MOID = 2.13946 au 
 T_jup = 3.357 
[ 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 18.0   n/a E2015T79  

541557 (2011 SK117)          Discovered 2011-Sep-23 by Spacewatch at Kitt Peak
Reference: Last Updated: 2019-12-13

Alternate Designations
 2011 SK117 = 2015 RE30 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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