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152558 (1990 SA)
Classification: Amor [NEO]          SPK-ID: 2152558
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4414849002060479 4.4344e-08  
a 2.013707050253859 6.7393e-09 au
q 1.124685794128319 8.9297e-08 au
i 38.14280722704473 1.5176e-05 deg
node 172.1959861573255 7.0232e-06 deg
peri 115.1380466438501 2.0792e-05 deg
M 45.25235013630208 9.8484e-06 deg
tp 2457469.300705178177
(2016-Mar-21.80070518)
2.8403e-05 JED
period 1043.741286222533
2.86
5.2397e-06
1.435e-08
d
yr
n .3449130591575022 1.7315e-09 deg/d
Q 2.9027283063794 9.7147e-09 au
  Orbit Determination Parameters
   # obs. used (total)      436  
   data-arc span      8406 days (23.01 yr)  
   first obs. used      1990-09-14  
   last obs. used      2013-09-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51186  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-11 08:58:17  

Additional Information
 Earth MOID = .308379 au 
 Jupiter MOID = 3.06445 au 
 T_jup = 3.462 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.8 mag n/a MPO266498  
diameter diameter 1.4 km n/a Hazards due to Comets and Asteroids (1994), Ed. T. Gehrels, pp.540-543 based on assumed medium albedo (0.15)

152558 (1990 SA)          Discovered 1990-Sep-16 by McNaught, R. H. at Siding Spring
Reference: 20070402/Numbers.arcLast Updated: 2007-04-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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