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243211 (2007 UM44)
Classification: Main-belt Asteroid          SPK-ID: 2243211
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05334273615601375 7.6706e-08  
a 2.791309530031002 3.5282e-08 au
q 2.642413442240791 2.0043e-07 au
i 3.619751900286326 7.8967e-06 deg
node 221.0526428393277 8.57e-05 deg
peri 201.7758683383769 0.00011026 deg
M 221.2022226571425 7.5759e-05 deg
tp 2459657.235412803136
(2022-Mar-18.73541280)
0.00036586 TDB
period 1703.375609719698
4.66
3.2296e-05
8.842e-08
d
yr
n .211345048001034 4.007e-09 deg/d
Q 2.940205617821212 3.7164e-08 au
  Orbit Determination Parameters
   # obs. used (total)      184  
   data-arc span      7438 days (20.36 yr)  
   first obs. used      1998-12-13  
   last obs. used      2019-04-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59933  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:18:25  

Additional Information
 Earth MOID = 1.65554 au 
 Jupiter MOID = 2.24229 au 
 T_jup = 3.324 
[ 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 16.6   n/a MPO433593  
diameter diameter 3.454 km 0.480 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243211 (2007 UM44)          Discovered 2007-Oct-18 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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