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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 85 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4418438739581668 4.4383e-08  
a 2.013817495824943 6.6268e-09 AU
q 1.124024572024916 8.9277e-08 AU
i 38.12459227942777 1.5176e-05 deg
node 172.2167402895242 7.0266e-06 deg
peri 115.0969636540729 2.0752e-05 deg
M 198.386290694598 9.5752e-06 deg
tp 2457469.102162808084
(2016-Mar-21.60216281)
2.8314e-05 JED
period 1043.827156346764
2.86
5.1523e-06
1.411e-08
d
yr
n .3448846849893665 1.7023e-09 deg/d
Q 2.90361041962497 9.5548e-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 = .309065 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 (413)
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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