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4512 Sinuhe (1939 BM)
Classification: Main-belt Asteroid          SPK-ID: 2004512
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .206352670518805 3.7075e-08  
a 2.768617405404136 1.3694e-08 au
q 2.197305810154147 1.0352e-07 au
i 10.32603829736248 4.4627e-06 deg
node 119.4023216290073 2.5521e-05 deg
peri 357.4109312989939 2.7862e-05 deg
M 156.1410403593458 1.238e-05 deg
tp 2457870.694029334769
(2017-Apr-27.19402933)
5.5888e-05 TDB
period 1682.646335869362
4.61
1.2484e-05
3.418e-08
d
yr
n .213948702306478 1.5874e-09 deg/d
Q 3.339929000654124 1.652e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2007  
   data-arc span      29504 days (80.78 yr)  
   first obs. used      1939-01-20  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44094  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 02:36:51  

Additional Information
 Earth MOID = 1.21391 au 
 Jupiter MOID = 1.76741 au 
 T_jup = 3.284 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.6   n/a MPO448959  
diameter diameter 10.767 km 0.334 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 18.00 h n/a LCDB (Rev. 2019-January); 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:
[Bennefeld, C.; Cantue, J.; Holly, V.; Jordon, L.; Martin, T.; Soar, E.; Swinney, T. (2009) Minor Planet Bull. 36, 45-48.]
geometric albedo albedo 0.265   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
SMASSII spectral type spec_B Sa   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)

4512 Sinuhe (1939 BM)          Discovered 1939-Jan-20 by Vaisala, Y. at Turku
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1939 BM = 1939 CE1 = 1979 WR7 = 1987 OE1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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