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WR 1, HD4004, HIP3415

Primary Facts on WR 1

  • WR 1's star type is wolf-rayet star that can be located in the constellation of Cassiopeia. The description is based on the spectral class.
  • WR 1 is not part of the constellation outline but is within the borders of the constellation.
  • The star can not be seen by the naked eye, you need a telescope to see it.
  • The star is calculated at being about -2992.32 light years away from us.

WR 1's Alternative Names

HIP3415 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD4004.

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+63 83.

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

Location of WR 1

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 star is compared to the celestial equator and is expressed in degrees. For WR 1, the location is 00h 43m 28.40 and +64° 45` 35.4 .

Physical Properties (Temperature) of WR 1

WR 1 has a spectral type of WN5. The star has a B-V Colour Index of 0.4 which means the star's temperature has been calculated using information from Morgans @ Uni.edu at being 6,398 Kelvin.

WR 1 Apparent and Absolute Magnitudes

WR 1 has an apparent magnitude of 10.11 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 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 WR 1

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as -1.09 which gave the calculated distance to WR 1 as -2992.32 light years away from Earth or -917.43 parsecs. It would take a spaceship travelling at the speed of light, -2992.32 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

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 WR 1 Facts and Figures

Visual Facts

Primary / Proper / Traditional NameWR 1
Alternative NamesHD 4004, HIP 3415, BD+63 83
Spectral TypeWN5
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeWolf-Rayet star
GalaxyMilky Way
Visual / Apparent Magnitude10.11
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)00h 43m 28.40
Declination (Dec.)+64° 45` 35.4
Galactic Latitude1.90 degrees
Galactic Longitude122.08 degrees
Distance from Earth-1.09 Parallax (milliarcseconds)
 -2992.32 Light Years
 -917.43 Parsecs
 -189,232,202.61 Astronomical Units
B-V Index0.40

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Estimated Facts

Calculated Effective Temperature6,398 Kelvin

Sources and Links

SIMBAD SourceLink

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