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312959 (1997 SH9)
Classification: Main-belt Asteroid          SPK-ID: 2312959
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 .1514573292191142 4.6043e-08  
a 2.704541233087151 2.3699e-08 au
q 2.294918641160801 1.2473e-07 au
i 10.61089017876673 9.4188e-06 deg
node .831224032820816 2.6756e-05 deg
peri 108.7731692627255 4.1494e-05 deg
M 321.1556754327646 3.2405e-05 deg
tp 2459175.792732474723
(2020-Nov-22.29273247)
0.00014692 TDB
period 1624.571527345563
4.45
2.1353e-05
5.846e-08
d
yr
n .2215968912050397 2.9127e-09 deg/d
Q 3.114163825013501 2.7288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      158  
   data-arc span      8065 days (22.08 yr)  
   first obs. used      1997-09-27  
   last obs. used      2019-10-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58174  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 08:13:33  

Additional Information
 Earth MOID = 1.33689 au 
 Jupiter MOID = 2.04456 au 
 T_jup = 3.325 
[ 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 16.6   n/a MPO455307  

312959 (1997 SH9)          Discovered 1997-Sep-27 by Spacewatch at Kitt Peak
Reference: 20120207/Numbers.arcLast Updated: 2012-02-09

Alternate Designations
 1997 SH9 = 2008 FG19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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