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1393 Sofala (1936 KD)
Classification: Main-belt Asteroid          SPK-ID: 2001393
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 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1099011548326754 2.7301e-08  
a 2.43445346933301 6.2972e-09 au
q 2.166904221666899 6.5367e-08 au
i 5.8454049678927 2.9942e-06 deg
node 56.6858088143921 3.7917e-05 deg
peri 183.5690906678822 4.2021e-05 deg
M 46.24140055373229 1.8436e-05 deg
tp 2458822.291209463073
(2019-Dec-04.79120946)
7.1001e-05 TDB
period 1387.396658082313
3.80
5.3832e-06
1.474e-08
d
yr
n .2594787856110301 1.0068e-09 deg/d
Q 2.702002716999121 6.9893e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3104  
   data-arc span      33847 days (92.67 yr)  
   first obs. used      1928-03-17  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41727  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:00:16  

Additional Information
 Earth MOID = 1.15449 au 
 Jupiter MOID = 2.29803 au 
 T_jup = 3.490 
[ 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 12.1   n/a MPO384760  
diameter diameter 11.214 km 0.495 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 16.5931 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 sidereal period (not synodic); Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Hanus, J.; Durech, J.; Broz, M.; Marciniak, A.; et al. (2013) Astron. Astrophys. 551, A67.]
geometric albedo albedo 0.223   0.046 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1393 Sofala (1936 KD)          Discovered 1936-May-25 by Jackson, C. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1936 KD = 1928 FB = 1951 GL = 1956 TE = 1958 CA = 1971 SJ = 1975 UB 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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