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JPL Small-Body Database Browser
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305489 (2008 EN13)
Classification: Main-belt Asteroid          SPK-ID: 2305489
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04683455160026399 5.9948e-08  
a 3.078828641227042 3.2945e-08 au
q 2.934633082361124 1.765e-07 au
i 11.02991559217183 7.2875e-06 deg
node 16.1867190414168 2.7009e-05 deg
peri 63.74980413978776 8.0345e-05 deg
M 183.8421404222073 7.3282e-05 deg
tp 2459966.053245140462
(2023-Jan-21.55324514)
0.00040031 TDB
period 1973.225430211723
5.40
3.1672e-05
8.671e-08
d
yr
n .1824424084993536 2.9284e-09 deg/d
Q 3.223024200092961 3.4488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      235  
   data-arc span      6736 days (18.44 yr)  
   first obs. used      2000-11-30  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60936  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 09:08:16  

Additional Information
 Earth MOID = 1.96806 au 
 Jupiter MOID = 1.91443 au 
 T_jup = 3.198 
[ 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 MPO433969  

305489 (2008 EN13)          Discovered 2008-Mar-01 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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