HD 37320

HD 37320 (HR 1920, HIP 26487) is a star located in the constellation Orion. It is an evolved blue giant star, based on its spectral type of B8III. The distance to HD 37320 is calculated at 285.5 pc, based on a parallax from Gaia EDR3. The apparent magnitude of the star is 5.852, which is above the limiting magnitude for naked-eye vision (6.5m), making it faintly visible to the naked eye.

Characteristics
It is an evolved blue giant star with a spectral type of B8III. It radiates about 219 times the solar luminosity by its photosphere at an effective temperature of 12,300 K. Its uniform disk angular diameter is measured at 0.153milliarcseconds. At the estimated distance by Gaia EDR3, it yields a physical size of. The star has a mass of and rotates under its own axis at a speed of 25 km/s.

HD 37320 is located within the constellation Orion, based on its astronomical coordinates. The distance to the star is 285.5 pc, based on a parallax of $5.852$ from Gaia EDR3. The apparent magnitude of the star, i.e. its brightness as seen from Earth, is of 5.852m, which is above the limiting magnitude for naked-eye vision, generally defined as 6.5m, making it faintly visible to the naked eye. The absolute magnitude of HD 37320, i.e. its brightness if it was seen at 10 pc, is -1.43. It is moving away from Earth at a velocity of 20.1 km/s.

HD 37320 is the Henry Draper Catalogue designation for this star. Other designations include HR 1920 from the Bright Star Catalogue, HIP 26487 from the Hipparcos Catalogue and BD+07 953 from the Bonner Durchmusterung catalogue.