(2256) Wisniewski Main-belt Asteroid

Discovered on 24 September 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.

Named in honor of Wiesław Z. Wiśniewski, astronomer at the University of Arizona. Wiśniewski is working on the lightcurves of comets and minor planets, especially earth-approaching objects. He is a leading authority on photometric standards and on photometry with CCDs as well as with photomultipliers.Naming citation (WGSBN Bull. 6, #9, 5), IAU / Minor Planet Center, via NASA/JPL

Where Wisniewski is today

Seen from above the solar system on 2026-10-14: Wisniewski is 3.12 au from the Sun and 2.32 au from Earth. Computed from JPL's orbital elements.

Facts

Number	2256
Provisional designation	4519 P-L
Orbit class	Main-belt Asteroid
Diameter	16.6 km (#2,759 largest of 17,440 named asteroids with a measured size)
Albedo	0.101
Rotation period	4.13 hours
Absolute magnitude (H)	12.23
Orbital period	5.44 years
Semi-major axis	3.09 au
Perihelion – aphelion	2.56 – 3.62 au
Eccentricity	0.171
Inclination	0.465°
Closest distance between its orbit and Earth's (MOID)	1.55 au

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

Also discovered on 24 September 1960

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

All 958

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