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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226314949643632 5.8913e-08  
a 2.668839213607699 1.401e-08 AU
q 2.074671549662702 1.5807e-07 AU
i 13.08016979947266 7.099e-06 deg
node 170.9827347687985 2.3284e-05 deg
peri 46.36965071705956 2.7132e-05 deg
M 306.6285904221527 1.3263e-05 deg
tp 2457236.595774451448
(2015-Aug-02.09577445)
5.9182e-05 JED
period 1592.509537874372
4.36
1.254e-05
3.433e-08
d
yr
n .2260583007122933 1.78e-09 deg/d
Q 3.263006877552696 1.7129e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1117  
   data-arc span      23240 days (63.63 yr)  
   first obs. used      1951-08-11  
   last obs. used      2015-03-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51065  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Apr-07 16:22:05  

Additional Information
 Earth MOID = 1.09385 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 LCDB (Rev. 2015-Feb); Warner et al., 2009 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
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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