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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .110020987725548 1.3139e-08  
a 2.432800998374896 5.922e-09 au
q 2.165141829593991 3.173e-08 au
i 5.845578047218799 2.8725e-07 deg
node 56.65597719884553 3.5152e-06 deg
peri 183.209932967494 9.0287e-06 deg
M 149.4408251327568 7.5708e-06 deg
tp 2458821.159348252375
(2019-Dec-03.65934825)
2.8883e-05 TDB
period 1385.984281371212
3.79
5.0607e-06
1.386e-08
d
yr
n .2597432054884757 9.4841e-10 deg/d
Q 2.700460167155802 6.5735e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3283  
   data-arc span      33911 days (92.84 yr)  
   first obs. used      1928-03-17  
   last obs. used      2021-01-19  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41328  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 09:24:57  

Additional Information
 Earth MOID = 1.15311 au 
 Jupiter MOID = 2.29656 au 
 T_jup = 3.491 
[ 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 12.12   n/a E2021B10  
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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