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229777 ENIAC (2008 MX4)
Classification: Main-belt Asteroid          SPK-ID: 2229777
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07886290146499851 3.7009e-08  
a 2.857322017028066 2.6378e-08 au
q 2.631985312345411 1.1051e-07 au
i 9.148841949341616 4.281e-06 deg
node 262.4652492425357 3.2808e-05 deg
peri 359.2789882427186 5.0483e-05 deg
M 244.2799068360655 4.1104e-05 deg
tp 2459767.578892078831
(2022-Jul-07.07889208)
0.00020456 TDB
period 1764.156902804884
4.83
2.4429e-05
6.688e-08
d
yr
n .2040634817842028 2.8258e-09 deg/d
Q 3.082658721710721 2.8458e-08 au
  Orbit Determination Parameters
   # obs. used (total)      329  
   data-arc span      6923 days (18.95 yr)  
   first obs. used      2002-04-08  
   last obs. used      2021-03-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55156  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:52:35  

Additional Information
 Earth MOID = 1.61472 au 
 Jupiter MOID = 1.98554 au 
 T_jup = 3.280 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.96   n/a MPCxxxxx  

229777 ENIAC           Discovered 2008 June 28 by J. Lacruz at La Cañada.
ENIAC was the first general-purpose electronic computer, a Turing-complete, digital computer capable of being reprogrammed to solve a full range of computing problems.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100330/MPCPages.arcLast Updated: 2010-04-05

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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