Universe Guide

Alpha Camelopardalis (9 Camelopardalis) Star Facts

Alpha Camelopardalis Facts

  • Alpha Camelopardalis is a supergiant star that can be located in the constellation of Camelopardalis. The description is based on the spectral class.
  • Alpha Camelopardalis is a main star of the constellation outline.
  • Based on the spectral type (O9.5Ia SB:) of the star, the star's colour is blue - white.
  • The star can be seen with the naked eye, that is, you don't need a telescope/binoculars to see it.
  • Using the most recent figures given by the 2007 Hipparcos data, the star is 6272.37 light years away from us. Distance

Alpha Camelopardalis's Alternative Names

Alpha Camelopardalis (Alf Cam) is the Bayer Classification for the star. The Bayer Classification was created by Johann Bayer in 1603. The brightest star in the constellation is normally given the Alpha designation, there are exceptions such as Pollux which is Beta Geminorum.

The Id of the star in the Yale Bright Star Catalogue is HR1542. HIP22783 is the reference name for the star in the Hipparcos Star Catalogue. The Id of the star in the Henry Draper catalogue is HD30614.

Flamsteed designations are named after the creator, Sir John Flamsteed. Sir John named the stars in the constellation with a number and its latin name, this star's Flamsteed designation is 9 Camelopardalis. The Flamsteed name can be shortened to 9 Cam.

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+66 358.

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

Location of Alpha Camelopardalis

The location of the supergiant 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 Alpha Camelopardalis, the location is 04h 54m 03.01 and +66° 20` 33.6 .

Radial Velocity and Proper Motion of Alpha Camelopardalis

Proper Motion

All stars like planets orbit round a central spot, in the case of planets, its the central star such as the Sun. In the case of a star, its the galactic centre. The constellations that we see today will be different than they were 50,000 years ago or 50,000 years from now. Proper Motion details the movements of these stars and are measured in milliarcseconds. The star is moving 6.89 ± 0.14 milliarcseconds/year towards the north and -0.13 ± 0.19 milliarcseconds/year east if we saw them in the horizon.

Radial Velocity

The Radial Velocity, that is the speed at which the star is moving away/towards the Sun is 13.00000 km/s with an error of about 10.00 km/s . When the value is negative then the star and the Sun are getting closer to one another, likewise, a positive number means that two stars are moving away. Its nothing to fear as the stars are so far apart, they won't collide in our life-time, if ever.

Physical Properties of Alpha Camelopardalis

Alpha Camelopardalis Temperature and Colour

Based on the star's spectral type of O9.5Ia SB: , Alpha Camelopardalis's colour and type is blue - white supergiant star. The star has a B-V Colour Index of 0 which means the star's temperature is about 10,293 Kelvin. The temperature was calculated using information from Morgans @ Uni.edu.

Alpha Camelopardalis Radius

Alpha Camelopardalis estimated radius has been calculated as being 87.88 times bigger than the Sun. The Sun's radius is 695,800km, therefore the star's radius is an estimated 61,147,166.64.km. If you need the diameter of the star, you just need to multiple the radius by 2. However with the 2007 release of updated Hipparcos files, the radius is now calculated at being round 79.41266190763570538282660013. 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.

Alpha Camelopardalis Iron Abundance

Alpha Camelopardalis Iron Abundance is -0.10 with an error value of 0.04 Fe/H with the Sun has a value of 1 to put it into context. The value comes from the Hipparcos Extended Catalog.

Alpha Camelopardalis Apparent and Absolute Magnitudes

Alpha Camelopardalis has an apparent magnitude of 4.26 which is how bright we see the star from Earth. Apparent Magnitude is also known as Visual Magnitude. If you used the 1997 Parallax value, you would get an absolute magnitude of -7.38 If you used the 2007 Parallax value, you would get an absolute magnitude of -7.16. 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 Alpha Camelopardalis

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 0.47000 which gave the calculated distance to Alpha Camelopardalis as 6939.65 light years away from Earth or 2127.66 parsecs. If you want that in miles, it is about 40,795,602,571,013,639.14, based on 1 Ly = 5,878,625,373,183.61 miles.

In 2007, Hipparcos data was revised with a new parallax of 0.52000 which put Alpha Camelopardalis at a distance of 6272.37 light years or 1923.08 parsecs. It should not be taken as though the star is moving closer or further away from us. It is purely that the distance was recalculated.

Using the 2007 distance, the star is roughly 396,660,959.63 Astronomical Units from the Earth/Sun give or take a few. An Astronomical Unit is the distance between Earth and the Sun. The number of A.U. is the number of times that the star is from the Earth compared to the Sun.

Travel Time to Alpha Camelopardalis

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 A3807365,715,157,099.51
Speed of Sound (Mach 1)767.2695,482,243,678.87
Concorde (Mach 2)1,534.542,741,118,266.87
New Horizons Probe33,000127,465,321.98
Speed of Light670,616,629.006,272.37
Alpha Camelopardalis brightness ranges from a magnitude of 4.320 to a magnitude of 4.277 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 0.0 days (variability).

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.

Hide Explanations
Show GridLines

Additional Alpha Camelopardalis Facts and Figures

Visual Facts

Primary / Proper / Traditional NameAlpha Camelopardalis
Alternative NamesAlf Cam, HD 30614, HIP 22783, HR 1542, 9 Camelopardalis, 9 Cam, BD+66 358
Spectral TypeO9.5Ia SB:
Constellation's Main StarYes
Multiple Star SystemNo / Unknown
Star Type very luminous Supergiant Star
GalaxyMilky Way
Absolute Magnitude -7.38 / -7.16
Visual / Apparent Magnitude4.26
Naked Eye VisibleYes - Magnitudes
Right Ascension (R.A.)04h 54m 03.01
Declination (Dec.)+66° 20` 33.6
Galactic Latitude14.04237202 degrees
Galactic Longitude144.06559056 degrees
1997 Distance from Earth0.47000 Parallax (milliarcseconds)
 6939.65 Light Years
 2127.66 Parsecs
2007 Distance from Earth0.52000 Parallax (milliarcseconds)
 6272.37 Light Years
  1923.08 Parsecs
 396,660,959.63 Astronomical Units
Proper Motion Dec.6.89000 ± 0.14000 milliarcseconds/year
Proper Motion RA.-0.13000 ± 0.19000 milliarcseconds/year
B-V Index0
Radial Velocity13.00000 ± 10.00 km/s
Iron Abundance-0.1000 ± 0.04 Fe/H

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Mean Variability Period in Days0.034
Variable Magnitude Range (Brighter - Dimmer)4.277 - 4.320

Estimated Calculated Facts

Radius (x the Sun)79.41
Effective Temperature10,293 Kelvin

Sources and Links

SIMBAD SourceLink

Location of Alpha Camelopardalis in Camelopardalis

Alpha Camelopardalis Location in Camelopardalis

The map was generated using Night Vision, an awesome free application by Brian Simpson.

Camelopardalis Main Stars

Comments and Questions

There's no register feature and no need to give an email address if you don't need to. All messages will be reviewed before being displayed. Comments may be merged or altered slightly such as if an email address is given in the main body of the comment.

You can decline to give a name which if that is the case, the comment will be attributed to a random star. A name is preferred even if its a random made up one by yourself.

This website is using cookies. More info. That's Fine