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15739 Matsukuma (1991 ER)
Classification: Main-belt Asteroid          SPK-ID: 2015739
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08084057251966205 3.1057e-08  
a 2.516076881509839 9.2922e-09 au
q 2.312675785905097 7.7542e-08 au
i 8.043260489235651 3.834e-06 deg
node 165.1044540367974 2.2084e-05 deg
peri 331.0066584810118 3.316e-05 deg
M 149.5771133999074 2.5475e-05 deg
tp 2458394.814837493015
(2018-Oct-03.31483749)
0.00010197 TDB
period 1457.754154671698
3.99
8.0755e-06
2.211e-08
d
yr
n .246955221390589 1.3681e-09 deg/d
Q 2.71947797711458 1.0043e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1976  
   data-arc span      10743 days (29.41 yr)  
   first obs. used      1991-03-09  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:01:54  

Additional Information
 Earth MOID = 1.32904 au 
 Jupiter MOID = 2.29168 au 
 T_jup = 3.441 
[ 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 14.2   n/a MPO337392  
diameter diameter 5.058 km 0.070 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.154   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15739 Matsukuma           Discovered 1991 Mar. 9 by T. Seki at Geisei.
Astronomer Takehiko Matsukuma (1890-1950), specialized in celestial mechanics, particularly the three-body problem, and held a professorship of Tohoku University. He wrote Tenmongaku Shinwa (New Astronomy) for students in 1942, which was the first astronomy book that the discoverer of this minor planet encountered.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20111012/MPCPages.arcLast Updated: 2011-10-13

Alternate Designations
 1991 ER = 1999 FU9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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