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

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 104 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4416721905305397 5.2785e-08  
a 2.01380792398273 6.67e-09 au
q 1.124364966889519 1.0609e-07 au
i 38.14356357820538 1.0991e-05 deg
node 172.1642357669071 8.1383e-06 deg
peri 115.156436074358 1.3303e-05 deg
M 237.1787178491526 1.1493e-05 deg
tp 2459556.620210110246
(2021-Dec-08.12021011)
3.4709e-05 TDB
period 1043.819714259544
2.86
5.1859e-06
1.42e-08
d
yr
n .3448871439024063 1.7135e-09 deg/d
Q 2.903250881075941 9.616e-09 au
  Orbit Determination Parameters
   # obs. used (total)      505  
   data-arc span      11226 days (30.74 yr)  
   first obs. used      1990-09-14  
   last obs. used      2021-06-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45834  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-10 06:21:13  

Additional Information
 Earth MOID = .307227 au 
 Jupiter MOID = 3.07461 au 
 T_jup = 3.462 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.71   n/a MPCxxxxx  
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)
rotation period rot_per 8.147 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46, 458-503.]
geometric albedo albedo 0.146   0.024 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

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

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