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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08000326141118615 5.5811e-08  
a 2.148491435680383 1.2698e-08 AU
q 1.97660511371195 1.2037e-07 AU
i 2.836120792586116 7.3455e-06 deg
node 185.7700564342682 8.479e-05 deg
peri 38.14403679464338 9.4049e-05 deg
M 140.8485318714229 4.1899e-05 deg
tp 2456550.462513076320
(2013-Sep-14.96251308)
0.00013304 JED
period 1150.26754727144
3.15
1.0197e-05
2.792e-08
d
yr
n .3129706656976973 2.7745e-09 deg/d
Q 2.320377757648815 1.3713e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      937  
   data-arc span      8694 days (23.80 yr)  
   first obs. used      1991-03-06  
   last obs. used      2014-12-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56637  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 04:17:01  

Additional Information
 Earth MOID = .970098 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 (809)
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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