Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08078161457490508 3.333e-08  
a 2.513968044964531 1.0024e-08 au
q 2.310885647302579 8.4294e-08 au
i 8.042003561664893 4.6908e-06 deg
node 165.1779319684512 2.5468e-05 deg
peri 330.2037350469978 4.2237e-05 deg
M 51.50999905603165 3.2914e-05 deg
tp 2458392.181855976595
(2018-Sep-30.68185598)
0.00013296 TDB
period 1455.921825330422
3.99
8.7082e-06
2.384e-08
d
yr
n .247266023310213 1.4789e-09 deg/d
Q 2.717050442626484 1.0834e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1719  
   data-arc span      10290 days (28.17 yr)  
   first obs. used      1991-03-09  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52893  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:21:32  

Additional Information
 Earth MOID = 1.32799 au 
 Jupiter MOID = 2.29709 au 
 T_jup = 3.442 
[ 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-26 18:40 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin