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269484 Marcia (2009 UB4)
Classification: Main-belt Asteroid          SPK-ID: 2269484
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05180489657382606 6.9085e-08  
a 2.798920596103737 3.561e-08 au
q 2.653922804104232 1.9913e-07 au
i 4.046156082650655 7.3989e-06 deg
node 224.3172539249914 0.00011774 deg
peri 182.4484849459332 0.00015078 deg
M 90.27256651742242 9.1502e-05 deg
tp 2458571.618233551175
(2019-Mar-29.11823355)
0.00043516 TDB
period 1710.347250310853
4.68
3.2641e-05
8.937e-08
d
yr
n .2104835728151524 4.017e-09 deg/d
Q 2.943918388103243 3.7455e-08 au
  Orbit Determination Parameters
   # obs. used (total)      178  
   data-arc span      5593 days (15.31 yr)  
   first obs. used      2004-10-10  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60127  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 13:12:08  

Additional Information
 Earth MOID = 1.66318 au 
 Jupiter MOID = 2.27558 au 
 T_jup = 3.320 
[ 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 16.7   n/a MPO413202  
diameter diameter 2.639 km 0.325 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

269484 Marcia           Discovered 2009 Oct. 19 by J. De Queiroz at Sternwarte Mirasteilas, Falera.
Marcia de Queiroz, is the daughter of the discoverer. She lives in the small Swiss town Falera with his father Jose.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110517/MPCPages.arcLast Updated: 2011-06-24
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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