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10446 Siegbahn (3006 T-3)
Classification: Main-belt Asteroid          SPK-ID: 2010446
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144165096475456 1.0442e-08  
a 2.222924100649454 6.1564e-09 au
q 1.968584883841734 2.6862e-08 au
i 6.711554248722132 3.4413e-07 deg
node 32.55334515338706 2.3663e-06 deg
peri 350.4913089615474 8.5101e-06 deg
M 8.084530694278563 8.1219e-06 deg
tp 2459173.314477028220
(2020-Nov-19.81447703)
2.7339e-05 TDB
period 1210.557376789613
3.31
5.029e-06
1.377e-08
d
yr
n .2973836737542475 1.2354e-09 deg/d
Q 2.477263317457173 6.8608e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2251  
   data-arc span      15860 days (43.42 yr)  
   first obs. used      1977-10-16  
   last obs. used      2021-03-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44948  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 00:39:11  

Additional Information
 Earth MOID = .971137 au 
 Jupiter MOID = 2.967 au 
 T_jup = 3.631 
[ 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 14.44   n/a MPCxxxxx  
diameter diameter 8.840 km 0.039 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.047   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

10446 Siegbahn           Discovered 1977 Oct. 16 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
Swedish physicist Kai M. Siegbahn (b. 1918) was awarded the Nobel Prize for physics in 1981 for his contribution to the development of high-resolution electron spectroscopy. The name was suggested by W. A. Fröger.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010705/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 3006 T-3 = 1987 VA = 1990 RL12 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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