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233811 (2008 UN155)
Classification: Main-belt Asteroid          SPK-ID: 2233811
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03512902871079914 7.4288e-08  
a 2.630947208900975 2.8418e-08 au
q 2.538524588862896 1.8201e-07 au
i 1.304735329044215 5.0911e-06 deg
node 124.1094969283747 0.00044316 deg
peri 350.7765898343202 0.00047068 deg
M 183.9919689990232 0.00016229 deg
tp 2459762.573063929781
(2022-Jul-02.07306393)
0.00070702 TDB
period 1558.714687361048
4.27
2.5255e-05
6.914e-08
d
yr
n .2309595225598927 3.7421e-09 deg/d
Q 2.723369828939054 2.9416e-08 au
  Orbit Determination Parameters
   # obs. used (total)      157  
   data-arc span      8598 days (23.54 yr)  
   first obs. used      1995-10-26  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51738  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 07:24:28  

Additional Information
 Earth MOID = 1.55487 au 
 Jupiter MOID = 2.2905 au 
 T_jup = 3.399 
[ 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 17.1   n/a MPO470489  

233811 (2008 UN155)          Discovered 2008-Oct-23 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100228/Numbers.arcLast Updated: 2010-03-03

[ show close-approach data ]
Alternate Designations
 2008 UN155 = 2006 HV4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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