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1242 Zambesia (1932 HL)
Classification: Main-belt Asteroid          SPK-ID: 2001242
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1895978736923661 3.8283e-08  
a 2.736492477700954 1.0596e-08 au
q 2.217659322553699 1.0604e-07 au
i 10.14029220502137 5.559e-06 deg
node 349.7506832099264 2.1765e-05 deg
peri 53.91494944952182 2.5489e-05 deg
M 269.0249785930203 1.3743e-05 deg
tp 2459018.339487874701
(2020-Jun-17.83948787)
6.3868e-05 TDB
period 1653.445234840603
4.53
9.6031e-06
2.629e-08
d
yr
n .217727199192482 1.2645e-09 deg/d
Q 3.255325632848209 1.2604e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2401  
   data-arc span      40850 days (111.84 yr)  
   first obs. used      1908-02-02  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .43867  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-13 20:56:22  

Additional Information
 Earth MOID = 1.2419 au 
 Jupiter MOID = 2.26884 au 
 T_jup = 3.303 
[ 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 10.4   n/a MPO350808  
diameter diameter 47.594 km 0.347 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 15.72 h n/a LCDB (Rev. 2019-January); 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:
[Aznar, A.; Garceran, A.C.; Mansego, E.A.; Rodriguez, P.B.; et al. (2016) Minor Planet Bull. 43, 174-181.]
geometric albedo albedo 0.058   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1242 Zambesia (1932 HL)          Discovered 1932-Apr-28 by Jackson, C. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1932 HL = 1947 TE = 1948 AC = 1967 EF = A908 BF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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