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308584 (2005 UN490)
Classification: Main-belt Asteroid          SPK-ID: 2308584
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08833788911207995 5.3377e-08  
a 3.124302702569474 4.8418e-08 au
q 2.84830839687732 1.7798e-07 au
i 8.28566902001624 5.9398e-06 deg
node 282.3841909809425 3.6065e-05 deg
peri 48.83101692942157 4.8332e-05 deg
M 291.6026425141306 3.3489e-05 deg
tp 2459383.734771151595
(2021-Jun-18.23477115)
0.00019208 TDB
period 2017.103038565154
5.52
4.6889e-05
1.284e-07
d
yr
n .1784737780456086 4.1488e-09 deg/d
Q 3.400297008261628 5.2695e-08 au
  Orbit Determination Parameters
   # obs. used (total)      256  
   data-arc span      5377 days (14.72 yr)  
   first obs. used      2004-07-18  
   last obs. used      2019-04-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56184  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 06:50:19  

Additional Information
 Earth MOID = 1.84527 au 
 Jupiter MOID = 1.8994 au 
 T_jup = 3.193 
[ 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 15.6   n/a MPO437367  

308584 (2005 UN490)          Discovered 2005-Oct-23 by CSS at Catalina
Reference: 20111210/Numbers.arcLast Updated: 2011-12-12

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