(9139) Barrylasker Main-belt Asteroid

Discovered on 29 September 1973 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.

Named in memory of U.S. astronomer Barry M. Lasker (1939-1999), whose long-time association with the Space Telescope Science Institute includes the writing of the proposal to establish the Institute. Under his leadership the Guide Star Catalogue and the Digitized Sky Survey were created for Space Telescope operations. By leading the construction of these momentous enterprises, he provided tools of very broad astronomical use, including the astrometry of minor planets.Naming citation (19990402/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL

Where Barrylasker is today

Seen from above the solar system on 2026-10-14: Barrylasker is 2.93 au from the Sun and 3.92 au from Earth. Computed from JPL's orbital elements.

Facts

Number	9139
Provisional designation	4180 T-2
Orbit class	Main-belt Asteroid
Absolute magnitude (H)	14.95
Orbital period	3.65 years
Semi-major axis	2.37 au
Perihelion – aphelion	1.81 – 2.93 au
Eccentricity	0.236
Inclination	1.80°
Closest distance between its orbit and Earth's (MOID)	0.812 au

Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.

Also named after someone called Barry

All asteroids named after someone called Barry

Also discovered on 29 September 1973

More named asteroids discovered by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T.

All 958

← (9138) Murdoch · (9140) Deni →