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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2226315209262608 6.6e-08  
a 2.668839222408257 1.7405e-08 AU
q 2.074671487215848 1.7344e-07 AU
i 13.08017110044711 7.1668e-06 deg
node 170.9827542575062 2.7735e-05 deg
peri 46.36963347237428 3.0923e-05 deg
M 306.6285850475791 1.4751e-05 deg
tp 2457236.595799394411
(2015-Aug-02.09579939)
6.6319e-05 JED
period 1592.509545751377
4.36
1.5579e-05
4.265e-08
d
yr
n .2260582995941447 2.2114e-09 deg/d
Q 3.263006957600667 2.128e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1006  
   data-arc span      23152 days (63.39 yr)  
   first obs. used      1951-08-11  
   last obs. used      2014-12-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52787  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:13:35  

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 (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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