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JPL Small-Body Database Browser
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160561 (1998 SR12)
Classification: Main-belt Asteroid          SPK-ID: 2160561
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2664834959707503 9.8701e-08  
a 2.77738166269373 2.9704e-08 au
q 2.03725528757405 2.7104e-07 au
i 21.94492289365223 7.322e-06 deg
node 258.2972660014732 2.6323e-05 deg
peri 89.90964450346233 2.969e-05 deg
M 170.6895055430419 2.0918e-05 deg
tp 2457798.902983454268
(2017-Feb-14.40298345)
8.9178e-05 TDB
period 1690.642462396114
4.63
2.7122e-05
7.426e-08
d
yr
n .2129368024329515 3.416e-09 deg/d
Q 3.51750803781341 3.762e-08 au
  Orbit Determination Parameters
   # obs. used (total)      263  
   data-arc span      7531 days (20.62 yr)  
   first obs. used      1998-08-25  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55273  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 08:02:14  

Additional Information
 Earth MOID = 1.16495 au 
 Jupiter MOID = 2.34789 au 
 T_jup = 3.180 
[ 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 14.8   n/a MPO433027  

160561 (1998 SR12)          Discovered 1998-Sep-23 by CSS at Catalina
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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