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312885 (2011 UO251)
Classification: Main-belt Asteroid          SPK-ID: 2312885
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08022984493785805 7.0255e-08  
a 2.798711560699762 5.1166e-08 au
q 2.574171366159029 2.1807e-07 au
i 5.470447757649364 7.9187e-06 deg
node 88.91889871228179 8.0407e-05 deg
peri 263.5581452689739 9.5483e-05 deg
M 274.6848110214368 5.456e-05 deg
tp 2459005.784034565309
(2020-Jun-05.28403457)
0.00026322 TDB
period 1710.155649777339
4.68
4.6898e-05
1.284e-07
d
yr
n .2105071547416586 5.7727e-09 deg/d
Q 3.023251755240494 5.5271e-08 au
  Orbit Determination Parameters
   # obs. used (total)      150  
   data-arc span      5112 days (14.00 yr)  
   first obs. used      2004-04-21  
   last obs. used      2018-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56197  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 10:53:51  

Additional Information
 Earth MOID = 1.57479 au 
 Jupiter MOID = 2.32392 au 
 T_jup = 3.315 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.4   n/a MPO440463  
diameter diameter 3.844 km 0.405 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.030   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

312885 (2011 UO251)          Discovered 2006-Oct-03 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

Alternate Designations
 2011 UO251 = 2010 HM68 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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