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1468 Zomba (1938 PA)
Classification: Mars-crossing Asteroid          SPK-ID: 2001468
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 41 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2710617197461981 3.9806e-08  
a 2.195579229546945 5.1163e-09 au
q 1.600441747746917 8.7911e-08 au
i 9.941011600502971 4.7284e-06 deg
node 308.9094198028915 2.0838e-05 deg
peri 23.08578900090517 2.1949e-05 deg
M 38.37111173274118 9.9511e-06 deg
tp 2458873.844521836902
(2020-Jan-25.34452184)
3.2516e-05 TDB
period 1188.289056003798
3.25
4.1536e-06
1.137e-08
d
yr
n .3029565897128396 1.059e-09 deg/d
Q 2.790716711346973 6.5031e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2260  
   data-arc span      29965 days (82.04 yr)  
   first obs. used      1938-07-23  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42228  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-24 22:34:43  

Additional Information
 Earth MOID = .594215 au 
 Jupiter MOID = 2.58623 au 
 T_jup = 3.602 
[ 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 12.7   n/a MPO267713  
rotation period rot_per 2.773 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Wisniewski, W.Z.; McMillan, R.S. (1987) Astron. J. 93, 1264-1267.]
[Alkema, M.S. (2014) Minor Planet Bull. 41, 40.]
[Benishek, V. (2014) Minor Planet Bull. 41, 126-127.]
[Warner, B.D. (2015) Minor Planet Bull. 42, 167-172.]
[Skiff, B.A.; McLelland, K.P.; Sanborn, J.; Pravec, P.; Koehn, B.W. (2019). Minor Planet Bull. 46-4, in press.]

1468 Zomba (1938 PA)          Discovered 1938-Jul-23 by Jackson, C. at Johannesburg (UO)
Independent discovery Aug. 2 by L. Boyer, Algiers, was announced first.
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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