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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2597165628654704 1.1078e-07  
a 2.738976647732181 5.1851e-08 au
q 2.027619047014391 2.9329e-07 au
i 14.54381095220052 1.7283e-05 deg
node 95.49017325991679 4.2434e-05 deg
peri 263.1824286974092 5.6357e-05 deg
M 209.0708725885443 3.4084e-05 deg
tp 2458094.647048802088
(2017-Dec-07.14704880)
0.00016617 JED
period 1655.697225940394
4.53
4.7016e-05
1.287e-07
d
yr
n .2174310582634027 6.1743e-09 deg/d
Q 3.450334248449971 6.5318e-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 = 1.082 au 
 Jupiter MOID = 2.20642 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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