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JPL Small-Body Database Browser
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1427 Ruvuma (1937 KB)
Classification: Main-belt Asteroid          SPK-ID: 2001427
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 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2118618407865797 4.0763e-08  
a 2.750529667378799 1.2098e-08 au
q 2.167797388909828 1.1665e-07 au
i 9.346778801707801 4.114e-06 deg
node 78.44164797394167 2.5804e-05 deg
peri 241.57777948 2.7526e-05 deg
M 295.7021500054966 1.0937e-05 deg
tp 2458898.089002512560
(2020-Feb-18.58900251)
5.1318e-05 TDB
period 1666.183875723369
4.56
1.0993e-05
3.01e-08
d
yr
n .2160625878363557 1.4255e-09 deg/d
Q 3.333261945847771 1.4661e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2538  
   data-arc span      32823 days (89.86 yr)  
   first obs. used      1929-11-27  
   last obs. used      2019-10-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40887  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:04:51  

Additional Information
 Earth MOID = 1.17218 au 
 Jupiter MOID = 2.02712 au 
 T_jup = 3.294 
[ 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 11.2   n/a MPO492767  
diameter diameter 35.406 km 0.305 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 4.797 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Bembrick, C.S.; Allen, B. (2006) Minor Planet Bull. 33, 10-11.]
[Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.034   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
SMASSII spectral type spec_B C   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)

1427 Ruvuma (1937 KB)          Discovered 1937-May-16 by Jackson, C. at Johannesburg (UO)
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1937 KB = 1929 XF 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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