Mintaka or Delta Orionis (Del Ori) is the 7th brightest naked eye star in the constellation Orion. With an apparent magnitude of 2.25, Mintaka is the 73rd brightest star in the entire sky (see: 50 Brightest Stars ). Its absolute magnitude is -4.99 and its distance is 916 light years. The Equinox J2000 equatorial coordinates are RA = 05h 32m 00.4s, Dec = -00° 17' 57".
Mintaka has a spectral type of O9.5II, a surface temperature of 30,000° Kelvin and a luminosity 90,000 times the Sun. It has a mass of 20 solar masses and a diameter ? times the Sun.
The image above shows the uncropped view of Mintaka (North is up) through the Takahashi E-180 Astrograph.
- Object: Mintaka
- Other Names: Delta Orionis, HR1852, HD36486, HIP25930
- Object Type: bright star
- Object Data: Apparent Magnitude = 2.25, Absolute Magnitude = -4.99, distance = 916 light years
- Object Position (Equinox J2000): RA = 05h 32m 00.4s, Dec = -00° 17' 57", Constellation = Orion
- Date/Time: 2011 Nov 02 at 12:08:17 UTC
- Location: Bifrost Astronomical Observatory, Portal, AZ
- Mount: Astro-Physics 1200GTO
- Telescope: Takahashi Epsilon 180 Hyperbolic Astrograph
- Camera: Canon EOS 550D (Rebel T2i) (modified with a Baader UV/IR filter)
- Field of View: 1.70° x 2.56° at 1.7 arc-sec/pixel (web version: 10.0 arc-sec/pixel)
- Exposure: 2 x 240s, f/2.8, ISO 800
- File Name: Mintaka-01w.jpg
- Processing (Adobe Camera Raw): Graduated Filter, Vignetting Correction, Noise Reduction, White Balance, Curves
- Processing (Photoshop CS5): Average Images, Curves, Noise Reduction
- Original Image Size: 3454 × 5179 pixels (17.9 MP); 11.5" x 17.3" @ 300 dpi
- Rights: Copyright 2011 by Fred Espenak. All Rights Reserved. See: Image Licensing.