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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 50 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3335487743957738 8.9909e-09  
a 2.55630046952846 7.9113e-09 au
q 1.703649580929901 2.1203e-08 au
i 7.746237789949616 8.5638e-07 deg
node 47.66828160351434 4.7708e-06 deg
peri 297.8994843123734 6.2496e-06 deg
M 184.101739857207 3.7657e-06 deg
tp 2460125.916057210604
(2023-Jun-30.41605721)
1.8181e-05 TDB
period 1492.850357829855
4.09
6.9301e-06
1.897e-08
d
yr
n .2411494213816107 1.1195e-09 deg/d
Q 3.408951358127019 1.055e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2909  
   data-arc span      30663 days (83.95 yr)  
   first obs. used      1937-07-02  
   last obs. used      2021-06-14  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .45163  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 07:39:37  

Additional Information
 Earth MOID = .713322 au 
 Jupiter MOID = 2.06654 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 12.41   n/a MPCxxxxx  
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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