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58159 (1989 SL4)
Classification: Main-belt Asteroid          SPK-ID: 2058159
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2001366058076939 4.5624e-08  
a 2.44804781003113 9.9824e-09 au
q 1.958103830476542 1.0916e-07 au
i 3.403908504419437 4.3045e-06 deg
node 102.5752575958009 7.2056e-05 deg
peri 282.9101494498499 7.2792e-05 deg
M 48.67669247042546 1.0562e-05 deg
tp 2459011.332366983596
(2020-Jun-10.83236698)
4.0681e-05 TDB
period 1399.034002305747
3.83
8.5573e-06
2.343e-08
d
yr
n .2573204078004425 1.5739e-09 deg/d
Q 2.937991789585719 1.198e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1011  
   data-arc span      12932 days (35.41 yr)  
   first obs. used      1985-08-24  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53601  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 05:42:34  

Additional Information
 Earth MOID = .964365 au 
 Jupiter MOID = 2.5183 au 
 T_jup = 3.467 
[ 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 15.01   n/a E2021B10  

58159 (1989 SL4)          Discovered 1989-Sep-26 by Elst, E. W. at La Silla
Reference: 20030614/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1989 SL4 = 1985 QA6 = 2001 YZ117 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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