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229915 (1990 SH)
Classification: Main-belt Asteroid          SPK-ID: 2229915
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2578811672695124 1.1031e-07  
a 2.74258964935266 5.219e-08 AU
q 2.035327429236313 2.9199e-07 AU
i 14.55530376666612 1.7287e-05 deg
node 95.62044334630998 4.2343e-05 deg
peri 263.0222780090228 5.6681e-05 deg
M 122.2964947993738 3.3618e-05 deg
tp 2456436.925694222061
(2013-May-24.42569422)
0.00014999 JED
period 1658.974367277587
4.54
4.7354e-05
1.296e-07
d
yr
n .2170015445089533 6.1941e-09 deg/d
Q 3.449851869469007 6.5649e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      8928 days (24.44 yr)  
   first obs. used      1990-09-17  
   last obs. used      2015-02-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .67238  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 23:47:14  

Additional Information
 Earth MOID = 1.09144 AU 
 T_jup = 3.255 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.5 mag n/a MPO281239  

229915 (1990 SH)          Discovered 1990-Sep-17 by McNaught, R. H. at Siding Spring
Reference: 20100130/Numbers.arcLast Updated: 2010-02-01

Alternate Designations
 1990 SH = 2004 XX85 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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