Universe Guide

IV Comae Berenices

IV Comae Berenices Facts

  • IV Comae Berenices is a variable star that can be located in the constellation of Coma Berenices. The description is based on the spectral class.
  • IV Comae Berenices is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (K:) of the star, the star's colour is orange to red .
  • The star can not be seen by the naked eye, you need a telescope to see it.
  • Using the most recent figures given by the 2007 Hipparcos data, the star is 91.46 light years away from us. Distance

IV Comae Berenices's Alternative Names

HIP59602 is the reference name for the star in the Hipparcos Star Catalogue.

IV Comae Berenices has alternative name(s) :- , IV Com.

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

Location of IV Comae Berenices

The location of the variable 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 IV Comae Berenices, the location is 12h 13m 20.77 and +16° 41` 43.7 .

Proper Motion of IV Comae Berenices

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 -459.12 ± 1.89 milliarcseconds/year towards the north and -504.66 ± 3.48 milliarcseconds/year east if we saw them in the horizon. . 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 IV Comae Berenices

IV Comae Berenices Temperature and Colour

Based on the star's spectral type of K: , IV Comae Berenices's colour and type is orange to red variable star. Based on the star's spectral, the stars temperature is between 3,700.00 and 5,200.00 degrees kelvin.

IV Comae Berenices Radius

IV Comae Berenices Apparent and Absolute Magnitudes

IV Comae Berenices has an apparent magnitude of 11.91 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 9.81 If you used the 2007 Parallax value, you would get an absolute magnitude of 9.67. 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 IV Comae Berenices

Using the original Hipparcos data that was released in 1997, the parallax to the star was given as 37.93000 which gave the calculated distance to IV Comae Berenices as 85.99 light years away from Earth or 26.36 parsecs. If you want that in miles, it is about 505,502,995,840,058.62, based on 1 Ly = 5,878,625,373,183.61 miles.

In 2007, Hipparcos data was revised with a new parallax of 35.66000 which put IV Comae Berenices at a distance of 91.46 light years or 28.04 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 5,783,624.87 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. The star's Galacto-Centric Distance is 7,401.00 Parsecs or 24,139.35 Light Years. The Galacto-Centric Distance is the distance from the star to the Centre of the Galaxy which is Sagittarius A*.

Travel Time to IV Comae Berenices

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 A38073683,335,050.12
Speed of Sound (Mach 1)767.26979,938,843.99
Concorde (Mach 2)1,534.5439,969,369.90
New Horizons Probe33,0001,858,624.15
Speed of Light670,616,629.0091.46
IV Comae Berenices brightness ranges from a magnitude of 12.129 to a magnitude of 11.909 over its variable period. The smaller the magnitude, the brighter the star. Its variable/pulsating period lasts for 0.1 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.

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Additional IV Comae Berenices Facts and Figures

Visual Facts

Primary / Proper / Traditional NameIV Comae Berenices
Alternative NamesHIP 59602, IV Com
Spectral TypeK:
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeVariable Star
ColourOrange to Red
GalaxyMilky Way
ConstellationComa Berenices
Absolute Magnitude 9.81 / 9.67
Visual / Apparent Magnitude11.91
Naked Eye VisibleRequires a 4.5 - 6 Inch Telescope - Magnitudes
Right Ascension (R.A.)12h 13m 20.77
Declination (Dec.)+16° 41` 43.7
Galactic Latitude76.34152336 degrees
Galactic Longitude260.78029595 degrees
1997 Distance from Earth37.93000 Parallax (milliarcseconds)
 85.99 Light Years
 26.36 Parsecs
2007 Distance from Earth35.66000 Parallax (milliarcseconds)
 91.46 Light Years
 28.04 Parsecs
 5,783,624.87 Astronomical Units
Galacto-Centric Distance24,139.35 Light Years / 7,401.00 Parsecs
Proper Motion Dec.-459.12000 ± 1.89000 milliarcseconds/year
Proper Motion RA.-504.66000 ± 3.48000 milliarcseconds/year
B-V Index-99

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Variable Star Details

Mean Variability Period in Days0.119
Variable Magnitude Range (Brighter - Dimmer)11.909 - 12.129

Estimated Calculated Facts

Calculated Temperature Range3,700.00 - 5,200.00

Sources and Links

SIMBAD SourceLink

Related Stars

Comments and Questions

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