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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2601334667164213 1.0096e-07  
a 2.737930862191129 4.9844e-08 au
q 2.02570341537947 2.6989e-07 au
i 14.54639123255616 1.2725e-05 deg
node 95.46629100462451 4.1636e-05 deg
peri 263.2558417637362 5.0655e-05 deg
M 252.5301137536333 3.2025e-05 deg
tp 2458094.488036351472
(2017-Dec-06.98803635)
0.00015584 JED
period 1654.749058530265
4.53
4.5187e-05
1.237e-07
d
yr
n .2175556457604207 5.9409e-09 deg/d
Q 3.450158309002788 6.281e-08 au
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      9328 days (25.54 yr)  
   first obs. used      1990-09-17  
   last obs. used      2016-04-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .66311  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 18:17:15  

Additional Information
 Earth MOID = 1.08103 au 
 Jupiter MOID = 2.20745 au 
 T_jup = 3.256 
[ 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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