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180550 (2004 EX20)
Classification: Main-belt Asteroid          SPK-ID: 2180550
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2577222890183585 5.8479e-08  
a 2.628165595824747 2.4071e-08 au
q 1.950828742549495 1.6203e-07 au
i 31.59481312751361 1.2652e-05 deg
node 50.51627692392369 9.8279e-06 deg
peri 55.27054729227957 2.6442e-05 deg
M 37.7578123143326 2.4459e-05 deg
tp 2459037.276818700517
(2020-Jul-06.77681870)
0.00010421 TDB
period 1556.243374977231
4.26
2.138e-05
5.854e-08
d
yr
n .2313262859707062 3.1781e-09 deg/d
Q 3.3055024491 3.0275e-08 au
  Orbit Determination Parameters
   # obs. used (total)      407  
   data-arc span      8122 days (22.24 yr)  
   first obs. used      1998-10-29  
   last obs. used      2021-01-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52499  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:26:58  

Additional Information
 Earth MOID = 1.06824 au 
 Jupiter MOID = 2.36739 au 
 T_jup = 3.150 
[ 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 15.7   n/a MPO359940  

180550 (2004 EX20)          Discovered 2004-Mar-15 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2004 EX20 = 1998 UH28 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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