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JPL Small-Body Database Browser
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392621 (2011 UM23)
Classification: Main-belt Asteroid          SPK-ID: 2392621
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .023953317008583 9.7234e-08  
a 3.091933332462878 6.5025e-08 au
q 3.01787127318099 2.9382e-07 au
i 10.62617263626851 1.0742e-05 deg
node 350.5162062710576 4.1203e-05 deg
peri 180.5369205274619 0.0001651 deg
M 359.3206843108691 0.00016014 deg
tp 2458604.247250729692
(2019-Apr-30.74725073)
0.00088335 TDB
period 1985.837047889952
5.44
6.2645e-05
1.715e-07
d
yr
n .1812837565813959 5.7187e-09 deg/d
Q 3.165995391744766 6.6583e-08 au
  Orbit Determination Parameters
   # obs. used (total)      123  
   data-arc span      4933 days (13.51 yr)  
   first obs. used      2005-10-01  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56758  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:23:00  

Additional Information
 Earth MOID = 2.02357 au 
 Jupiter MOID = 1.80701 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 16.1   n/a MPO386572  

392621 (2011 UM23)          Discovered 2005-Oct-01 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2014-04-17

[ show close-approach data ]
Alternate Designations
 2011 UM23 = 2005 UM531 = 2008 CA104 = 2011 SD277 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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