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1429 Pemba (1937 NH)
Classification: Main-belt Asteroid          SPK-ID: 2001429
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3334179957089302 3.3343e-08  
a 2.556488286892072 9.2693e-09 au
q 1.70410908622316 8.1792e-08 au
i 7.745789496867096 4.2067e-06 deg
node 47.6790257665994 2.2676e-05 deg
peri 297.8760102365837 2.406e-05 deg
M 136.8678004748059 1.009e-05 deg
tp 2458632.873157012403
(2019-May-29.37315701)
4.0567e-05 TDB
period 1493.014885653475
4.09
8.1201e-06
2.223e-08
d
yr
n .2411228471057288 1.3114e-09 deg/d
Q 3.408867487560983 1.236e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2625  
   data-arc span      30522 days (83.56 yr)  
   first obs. used      1937-07-02  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46442  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:55:17  

Additional Information
 Earth MOID = .712864 au 
 Jupiter MOID = 2.06634 au 
 T_jup = 3.345 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.39   n/a E2021B10  
diameter diameter 9.874 km 0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 20. h n/a LCDB (Rev. 2020-October); Warner et al., 2009 lower-limit; Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Harris, A.W.; Young, J.W.; Bowell, E.; Tholen, D.J. (1999) Icarus 142, 173-201.]
geometric albedo albedo 0.196   0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

1429 Pemba (1937 NH)          Discovered 1937-Jul-02 by Jackson, C. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1937 NH = 1949 JK 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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