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11543 (1992 UN2)
Classification: Main-belt Asteroid          SPK-ID: 2011543
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2003091311208477 4.4896e-08  
a 2.3858436595874 8.0573e-09 au
q 1.907937389145264 1.0717e-07 au
i 3.038085831290739 4.9412e-06 deg
node 50.19859799785874 7.776e-05 deg
peri 358.9955286624602 7.8529e-05 deg
M 167.363103196576 1.1091e-05 deg
tp 2458374.724409913734
(2018-Sep-13.22440991)
4.016e-05 TDB
period 1346.050641558997
3.69
6.8187e-06
1.867e-08
d
yr
n .267449075751747 1.3548e-09 deg/d
Q 2.863749930029536 9.6713e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1534  
   data-arc span      11578 days (31.70 yr)  
   first obs. used      1988-08-16  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50199  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:33:46  

Additional Information
 Earth MOID = .918225 au 
 Jupiter MOID = 2.51763 au 
 T_jup = 3.506 
[ 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 14.5   n/a MPO332928  
diameter diameter 2.832 km 0.325 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 26.828 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.290   0.044 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11543 (1992 UN2)          Discovered 1992-Oct-25 by Kawasato, N. at Uenohara
Reference: 19990928/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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