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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2667500081260352 9.8789e-08  
a 2.777108765509527 2.9415e-08 au
q 2.036314979742977 2.7149e-07 au
i 21.94486535224565 7.322e-06 deg
node 258.2961133955979 2.6326e-05 deg
peri 89.87964360664144 2.9684e-05 deg
M 255.9356001782539 2.1939e-05 deg
tp 2459489.138231749528
(2021-Oct-01.63823175)
0.00010907 TDB
period 1690.39329233772
4.63
2.6857e-05
7.353e-08
d
yr
n .2129681900844152 3.3836e-09 deg/d
Q 3.517902551276078 3.7261e-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 = 1.16476 au 
 Jupiter MOID = 2.34989 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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