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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1897366485168679 3.8106e-08  
a 2.735740448572131 1.0294e-08 au
q 2.216670224648022 1.0576e-07 au
i 10.14207870926702 5.5597e-06 deg
node 349.7395484993478 2.1663e-05 deg
peri 54.04438044033456 2.541e-05 deg
M 356.0470555861303 1.3878e-05 deg
tp 2459018.648008369945
(2020-Jun-18.14800837)
6.3749e-05 TDB
period 1652.763694388646
4.53
9.3289e-06
2.554e-08
d
yr
n .2178169820781085 1.2294e-09 deg/d
Q 3.25481067249624 1.2248e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2443  
   data-arc span      40881 days (111.93 yr)  
   first obs. used      1908-02-02  
   last obs. used      2020-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4376  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 17:55:39  

Additional Information
 Earth MOID = 1.24159 au 
 Jupiter MOID = 2.27114 au 
 T_jup = 3.304 
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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-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:
[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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