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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .333321106204126 3.3618e-08  
a 2.556398946398154 9.2844e-09 au
q 1.704297221685659 8.259e-08 au
i 7.746061521119111 4.6574e-06 deg
node 47.68945203369201 2.2765e-05 deg
peri 297.8532665516748 2.4431e-05 deg
M 88.67163561533464 1.0456e-05 deg
tp 2458632.774632760383
(2019-May-29.27463276)		 4.2645e-05 TDB
period 1492.936622716009
4.09		 8.1331e-06
2.227e-08		 d
yr
n .2411354872821552 1.3136e-09 deg/d
Q 3.408500671110648 1.2379e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2457  
   data-arc span      30252 days (82.83 yr)  
   first obs. used      1937-07-02  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47086  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:24:19  

Additional Information
 Earth MOID = .71476 au 
 Jupiter MOID = 2.06597 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-August); 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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