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47Rho Leo The Sun (smaller than a dot at this scale)
Surface temperature
12,450 K
Radius
3,423 × the Sun
Luminosity
253,512,863 × the Sun
Spectral type
B1Ib SB
Diagram, not a photograph. Colour from the star’s measured colour index; size from its luminosity and temperature, drawn to one scale with the Sun. Source: HYG stellar database.

Cataloged star · Database record + computed analysis

47Rho Leo

HIP 51624 · HD 91316

A real star from the HYG catalog in the constellation Leo.

Distance: no reliable parallax measured Apparent magnitude 3.84

B-type: blue-white powerhouse

Its spectral type is B1Ib SB: hot (10,000–30,000 °C), luminous and fast-burning: the searchlights of young star regions. From its measured color, its surface temperature is roughly 12,449 K (12,176 °C), an estimate computed from the catalog's color index.

How far away is it?

The catalog lists no reliable parallax for this star, so its distance is honestly unknown. It is one of many stars still awaiting a precise measurement.

How powerful is it?

Its computed luminosity is 253,512,863 times the Sun's output, a genuine searchlight (derived from its brightness and distance).

Can you see it?

At apparent magnitude 3.84, it is an easy naked-eye star under any reasonable sky. It is visible from both hemispheres.

Everything above is computed from the catalog’s measured values for this star. Where a value is missing, the statement is omitted rather than guessed.

About this record

Data: the HYG stellar database v4.1 (Hipparcos + Yale + Gliese, CC BY-SA, © David Nash / astronexus). Want the full stories? Our deep star guides cover Sirius, Betelgeuse, Proxima Centauri, Vega and three dozen more. You can also browse the catalog or learn how stars live and die.