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1431 Luanda (1937 OB)
Classification: Main-belt Asteroid          SPK-ID: 2001431
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1833969410450565 3.5977e-08  
a 2.619932897127569 8.439e-09 au
q 2.139445218051061 9.2832e-08 au
i 13.98948395299397 3.4614e-06 deg
node 117.716245381037 1.4696e-05 deg
peri 224.2536519055145 1.7425e-05 deg
M 165.8986809753389 1.1147e-05 deg
tp 2458286.703997646841
(2018-Jun-17.20399765)
4.681e-05 TDB
period 1548.936732567125
4.24
7.4838e-06
2.049e-08
d
yr
n .2324174980364468 1.1229e-09 deg/d
Q 3.100420576204078 9.9866e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2891  
   data-arc span      30441 days (83.34 yr)  
   first obs. used      1937-07-12  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41235  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 19:38:54  

Additional Information
 Earth MOID = 1.15162 au 
 Jupiter MOID = 2.31536 au 
 T_jup = 3.340 
[ 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 11.7   n/a MPO502167  
diameter diameter 13.608 km 1.966 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 4.141 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Behrend, R. (2007) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
geometric albedo albedo 0.360   0.347 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

1431 Luanda           Discovered 1937 July 29 by C. Jackson at Johannesburg.
Named for the capital city of Angola.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC 5182Last Updated: 2006-03-21

[ show close-approach data ]
Alternate Designations
 1937 OB = 1949 KZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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