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1428 Mombasa (1937 NO)
Classification: Main-belt Asteroid          SPK-ID: 2001428
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 46 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1415014294934756 1.6485e-08  
a 2.808746428286806 9.4983e-09 au
q 2.411304793599529 4.6047e-08 au
i 17.30662987078923 3.5193e-07 deg
node 115.708209861939 1.5392e-06 deg
peri 252.4779502440769 8.2749e-06 deg
M 237.9004878576926 1.1207e-05 deg
tp 2459979.647817461118
(2023-Feb-04.14781746)
5.515e-05 TDB
period 1719.361614167013
4.71
8.7215e-06
2.388e-08
d
yr
n .209380037936005 1.0621e-09 deg/d
Q 3.206188062974083 1.0842e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3298  
   data-arc span      31998 days (87.61 yr)  
   first obs. used      1933-11-18  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .3445  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 12:21:52  

Additional Information
 Earth MOID = 1.46943 au 
 Jupiter MOID = 2.34587 au 
 T_jup = 3.241 
[ 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 10.34   n/a E2021B10  
diameter diameter 52.464 km 0.268 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 16.67 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Hawkins, S.; Ditteon, R. (2008) Minor Planet Bull. 35, 1-4.]
[Stephens, R.D. (2012) Posting on CALL web site. http://www.minorplanet.info/call.html]
geometric albedo albedo 0.038   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
SMASSII spectral type spec_B Xc   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

1428 Mombasa (1937 NO)          Discovered 1937-Jul-05 by Jackson, C. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1937 NO = 1933 WO = 1949 FA = 1957 YZ 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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