(5148) Giordano Main-belt Asteroid

Discovered on 17 October 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.

Named in memory of Giordano Bruno (1548–1600), Dominican priest, who spent 16 years traveling through Europe, but who was mostly in London, where many of his papers were published. Bruno assumed the existence of other worlds on which people could live, and he was convinced of the correctness of the heliocentric system. This brought him in conflict with the church, and he was condemned and burned on the Campo dei Fiori in Rome.Naming citation (WGSBN Bull. 4, #10, 5), IAU / Minor Planet Center, via NASA/JPL

Where Giordano is today

MercuryVenusEarthEarthMarsMarsGiordanoGiordano

Seen from above the solar system on 2026-10-14: Giordano is 3.51 au from the Sun and 2.56 au from Earth. Computed from JPL's orbital elements.

Facts

Number5148
Provisional designation5557 P-L
Orbit classMain-belt Asteroid
Diameter8.11 km (#6,454 largest of 17,440 named asteroids with a measured size)
Albedo0.0890
Rotation period7.82 hours
Absolute magnitude (H)14.04
Orbital period5.49 years
Semi-major axis3.11 au
Perihelion – aphelion2.65 – 3.58 au
Eccentricity0.149
Inclination1.13°
Closest distance between its orbit and Earth's (MOID)1.64 au

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

Also discovered on 17 October 1960

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