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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 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08000326664360394 6.9365e-08  
a 2.148491434338565 1.485e-08 AU
q 1.976605101235678 1.537e-07 AU
i 2.836119926673679 7.5106e-06 deg
node 185.7700418505273 9.3246e-05 deg
peri 38.14405297661042 0.00010169 deg
M 140.8485312821739 4.238e-05 deg
tp 2456550.462515380680
(2013-Sep-14.96251538)
0.00013427 JED
period 1150.267546193858
3.15
1.1926e-05
3.265e-08
d
yr
n .3129706659908912 3.2449e-09 deg/d
Q 2.320377767441452 1.6038e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      861  
   data-arc span      8553 days (23.42 yr)  
   first obs. used      1991-03-06  
   last obs. used      2014-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56322  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 15:13:01  

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 15.0 mag n/a MPO263742  

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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