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249491 (2009 UH149)
Classification: Main-belt Asteroid          SPK-ID: 2249491
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08970574213346787 4.6155e-08  
a 2.968242503299066 3.0586e-08 au
q 2.701974106708521 1.3925e-07 au
i 13.35418372936863 4.5999e-06 deg
node 117.2047613850374 2.1451e-05 deg
peri 281.3031311623832 3.8565e-05 deg
M 29.75250924484158 2.8897e-05 deg
tp 2458846.127977416805
(2019-Dec-28.62797742)
0.00015054 TDB
period 1867.873653029296
5.11
2.8871e-05
7.904e-08
d
yr
n .1927325220397836 2.979e-09 deg/d
Q 3.234510899889612 3.333e-08 au
  Orbit Determination Parameters
   # obs. used (total)      428  
   data-arc span      8187 days (22.41 yr)  
   first obs. used      1997-06-29  
   last obs. used      2019-11-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62143  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 10:24:03  

Additional Information
 Earth MOID = 1.75023 au 
 Jupiter MOID = 2.13251 au 
 T_jup = 3.217 
[ 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 15.3   n/a MPO454850  
diameter diameter 2.817 km 0.660 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.185   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249491 (2009 UH149)          Discovered 2009-Oct-23 by La Sagra at La Sagra
Reference: 20100824/Numbers.arcLast Updated: 2010-08-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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