Universe Guide

HD 46223

HD 46223 Facts

  • HD 46223 is a star that can be located in the constellation of Monoceros. The description is based on the spectral class.
  • HD 46223 is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (O5e) of the star, the star's colour is blue - white.
  • The star can not be seen by the naked eye, you need a telescope to see it.
  • The star is calculated at being about 5722.16 light years away from us. Distance

HD 46223's Alternative Names

HIP31149 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD46223.

BD number is the number that the star was filed under in the Durchmusterung or Bonner Durchmusterung, a star catalogue that was put together by the Bonn Observatory between 1859 to 1903. The star's BD Number is BD+04 1302.

More details on objects' alternative names can be found at Star Names .

Location of HD 46223

The location of the star in the night sky is determined by the Right Ascension (R.A.) and Declination (Dec.), these are equivalent to the Longitude and Latitude on the Earth. The Right Ascension is how far expressed in time (hh:mm:ss) the star is along the celestial equator. If the R.A. is positive then its eastwards. The Declination is how far north or south the object is compared to the celestial equator and is expressed in degrees. For HD 46223, the location is 06h 32m 09.31 and +04° 49` 24.7 .

Physical Properties of HD 46223

HD 46223 Temperature and Colour

Based on the star's spectral type of O5e , HD 46223's colour and type is blue - white star. The star has a B-V Colour Index of 0.14 which means the star's temperature is about 7,950 Kelvin. The temperature was calculated using information from Morgans @ Uni.edu.

HD 46223 Radius

HD 46223 estimated radius has been calculated as being 30.08 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 20,926,285.97.km. If you need the diameter of the star, you just need to multiple the radius by 2. The figure is derived at by using the formula from SDSS rather than peer reviewed papers. It has been known to produce widely incorrect figures.

HD 46223 Apparent and Absolute Magnitudes

HD 46223 has an apparent magnitude of 7.29 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. Using the supplied Parallax value, you would get an absolute magnitude of -3.93 Magnitude, whether it be apparent/visual or absolute magnitude is measured by a number, the smaller the number, the brighter the Star is. Our own Sun is the brightest star and therefore has the lowest of all magnitudes, -26.74. A faint star will have a high number.

Distance to HD 46223

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.57000 which gave the calculated distance to HD 46223 as 5722.16 light years away from Earth or 1754.39 parsecs. If you want that in miles, it is about 33,638,434,965,416,325.80, based on 1 Ly = 5,878,625,373,183.61 miles.

Travel Time to HD 46223

The time it will take to travel to this star is dependent on how fast you are going. U.G. has done some calculations as to how long it will take going at differing speeds. A note about the calculations, when I'm talking about years, I'm talking non-leap years only (365 days).

The New Horizons space probe is the fastest probe that we've sent into space at the time of writing. Its primary mission was to visit Pluto which at the time of launch (2006), Pluto was still a planet.

DescriptionSpeed (m.p.h.)Time (years)
Airbus A380736 5,213,825,611.14
Speed of Sound (Mach 1)767.2695,001,343,270.48
Concorde (Mach 2)1,534.542,500,668,376.06
New Horizons Probe33,000116,284,110.60
Speed of Light670,616,629.005,722.16

Source of Information

The source of the information if it has a Hip I.D. is from Simbad, the Hipparcos data library based at the University at Strasbourg, France. Hipparcos was a E.S.A. satellite operation launched in 1989 for four years. The items in red are values that I've calculated so they could well be wrong. Information regarding Metallicity and/or Mass is from the E.U. Exoplanets. The information was obtained as of 12th Feb 2017.

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Additional HD 46223 Facts and Figures

Visual Facts

Primary / Proper / Traditional NameHD 46223
Alternative NamesHD 46223, HIP 31149, BD+04 1302
Spectral TypeO5e
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
GalaxyMilky Way
Absolute Magnitude -3.93
Visual / Apparent Magnitude7.29
Naked Eye VisibleRequires a 7x50 Binoculars - Magnitudes
Right Ascension (R.A.)06h 32m 09.31
Declination (Dec.)+04° 49` 24.7
Galactic Latitude-2.07372544 degrees
Galactic Longitude206.43817730 degrees
Distance from Earth0.57000 Parallax (milliarcseconds)
 5722.16 Light Years
 1754.39 Parsecs
 361,866,391.91 Astronomical Units
B-V Index0.14
Radial Velocity38.20000 ± 2.60 km/s

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Estimated Calculated Facts

Radius (x the Sun)30.08
Effective Temperature7,950 Kelvin

Sources and Links

SIMBAD SourceLink

Related Stars

Comments and Questions

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