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5515 (1989 EL1)
Classification: Main-belt Asteroid          SPK-ID: 2005515
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2230895677276774 7.5742e-08  
a 2.668449987967909 1.7405e-08 AU
q 2.073146633649222 1.984e-07 AU
i 13.07432768514741 7.8503e-06 deg
node 171.021569708254 3.0343e-05 deg
peri 46.39758280726939 3.3626e-05 deg
M 261.3980869491264 1.5764e-05 deg
tp 2457236.583714927749
(2015-Aug-02.08371493)
7.1863e-05 JED
period 1592.161171284686
4.36
1.5577e-05
4.265e-08
d
yr
n .2261077625134662 2.2121e-09 deg/d
Q 3.263753342286596 2.1287e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      973  
   data-arc span      22872 days (62.62 yr)  
   first obs. used      1951-08-11  
   last obs. used      2014-03-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54489  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 13:48:32  

Additional Information
 Earth MOID = 1.09128 AU 
 T_jup = 3.310 
[ 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 12.9 mag n/a MPO250261  
rotation period rot_per 5.230 h n/a Asteroid Lightcurve DataBase (Rev. 2013-Sep-12) Published Reference List:
[Ditteon, R.; Bixby, A.R.; Sarros, A.M.; Waters, C.T. (2002) Minor Planet Bul. 29, 69.]

5515 (1989 EL1)          Discovered 1989-Mar-05 by Helin, E. F. at Palomar (675)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1989 EL1 = 1976 HF 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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