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48449 (1991 EK4)
Classification: Main-belt Asteroid          SPK-ID: 2048449
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08002145193184813 4.7365e-08  
a 2.148892437903684 1.1247e-08 au
q 1.976934944977263 1.0561e-07 au
i 2.836909910534812 5.5481e-06 deg
node 185.7608535038712 8.3764e-05 deg
peri 37.8250714177284 9.207e-05 deg
M 328.9544862382447 4.1078e-05 deg
tp 2457699.724014393734
(2016-Nov-07.22401439)
0.00013163 JED
period 1150.58959744929
3.15
9.033e-06
2.473e-08
d
yr
n .3128830651676966 2.4564e-09 deg/d
Q 2.320849930830106 1.2147e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1188  
   data-arc span      9175 days (25.12 yr)  
   first obs. used      1991-03-06  
   last obs. used      2016-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56079  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 14:31:14  

Additional Information
 Earth MOID = .968673 au 
 Jupiter MOID = 2.64901 au 
 T_jup = 3.701 
[ 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 15.1 mag n/a MPO319663  

48449 (1991 EK4)          Discovered 1991-Mar-12 by Debehogne, H. at La Silla
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 EK4 = 1998 OF 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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