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490171 (2008 UD253)
Classification: Asteroid          SPK-ID: 2490171
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4826272047476716 5.7876e-08  
a 4.765204509455248 6.0527e-08 au
q 2.465387177005862 2.678e-07 au
i 13.6264954097976 9.0396e-06 deg
node 35.58885126997819 4.325e-05 deg
peri 355.8201083672112 5.0039e-05 deg
M 38.08333439581249 1.4756e-05 deg
tp 2458598.567422253066
(2019-Apr-25.06742225)
0.00015012 TDB
period 3799.450081892154
10.40
7.2391e-05
1.982e-07
d
yr
n .09475055395930281 1.8053e-09 deg/d
Q 7.065021841904634 8.974e-08 au
  Orbit Determination Parameters
   # obs. used (total)      349  
   data-arc span      15601 days (42.71 yr)  
   first obs. used      1977-08-18  
   last obs. used      2020-05-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 02:11:20  

Additional Information
 Earth MOID = 1.4717 au 
 Jupiter MOID = .869914 au 
 T_jup = 2.721 
[ 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 14.3   n/a MPO206165  

490171 (2008 UD253)          Discovered 2008-Oct-27 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2017-05-15

[ show close-approach data ]
Alternate Designations
 2008 UD253 = 1998 XL27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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