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1357 Khama (1935 ND)
Classification: Main-belt Asteroid          SPK-ID: 2001357
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1569257476273729 3.6214e-08  
a 3.187640622407644 1.6341e-08 au
q 2.68741773456894 1.1694e-07 au
i 13.97919408432318 4.0889e-06 deg
node 83.73842209636905 1.6237e-05 deg
peri 283.2084973059354 2.1112e-05 deg
M 275.2619774595521 1.6445e-05 deg
tp 2459489.803452576485
(2021-Oct-02.30345258)
9.715e-05 TDB
period 2078.750927229313
5.69
1.5985e-05
4.376e-08
d
yr
n .1731809209484419 1.3317e-09 deg/d
Q 3.687863510246348 1.8906e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2487  
   data-arc span      31032 days (84.96 yr)  
   first obs. used      1935-07-02  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43086  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 15:30:20  

Additional Information
 Earth MOID = 1.73073 au 
 Jupiter MOID = 1.95835 au 
 T_jup = 3.133 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.9   n/a MPO492766 IRAS observations used: 12
diameter diameter 38.321 km 0.277 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 15.692 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 0.029   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
B-V BV 0.726   0.073 EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 #obs=1; phase=6.31 deg.
Tholen spectral type spec_T XCU   n/a EAR-A-5-DDR-TAXONOMY-V4.0 used 1 color indices

1357 Khama (1935 ND)          Discovered 1935-Jul-02 by Jackson, C. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1935 ND = 1936 XE = 1950 EJ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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