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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3331542555506202 3.4022e-08  
a 2.555803282461417 9.9614e-09 au
q 1.704326542559152 8.3963e-08 au
i 7.746896015355219 4.8761e-06 deg
node 47.69290020956136 2.5041e-05 deg
peri 297.8258706822571 2.6871e-05 deg
M 352.2324147306199 1.1999e-05 deg
tp 2458632.701276714819
(2019-May-29.20127671)		 4.9828e-05 TDB
period 1492.414851631235
4.09		 8.7251e-06
2.389e-08		 d
yr
n .241219791940903 1.4102e-09 deg/d
Q 3.407280022363682 1.328e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2166  
   data-arc span      30071 days (82.33 yr)  
   first obs. used      1937-07-02  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49344  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:04:51  

Additional Information
 Earth MOID = .713929 au 
 Jupiter MOID = 2.06356 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 12.3   n/a MPO435709  
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. 2019-January); 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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