Universe Guide

HD 109771

HD 109771 Facts

HD 109771's Alternative Names

The Id of the star in the Henry Draper catalogue is HD109771.

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+12 2495.

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

Location of HD 109771

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 109771, the location is 12 37 12.5510146763 and +11 49 03.987105770 .

Radial Velocity and Proper Motion of HD 109771

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 0.72 milliarcseconds/year towards the north and 24.29 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 -9.92 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 (Colour) of HD 109771

HD 109771 Colour and Temperature

HD 109771 has a spectral type of K0 D~. This means the star is a orange to red star.

Distance to HD 109771

The Parallax of the star is given as 4.67 which gives a calculated distance to HD 109771 of 698.00 light years from the Earth or 214.00 parsecs. It is about 4,103,280,510,482,152.80 miles from Earth.

The star is roughly 44,140,360.96 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.

Time to Travel to HD 109771

A note about the calculations, when I'm talking about years, I'm talking non-leap years only (365 days).

If you were to drive there at about 120 m.p.h. in a car with an infinity engine so you didn't have to pull over for petrol, it would take you 34,194,004,254,017.94 hours or 3,903,425,143.15 years.

At the time of writing, the fastest probe so far created is the New Horizon probe which is travelling at a speed of 33,000 m.p.h. If the probe was travelling to HD 109771 then it would take 124,341,833,650.97 hours / 14,194,273.25 years to get there. Speed Ref: N.A.S.A.

It would to take a spaceship journey travelling at the speed of light, 698.00 years to get there. We don't have the technology or spaceship that can carry people over that distance yet.

Hide Explanations
Show GridLines

Additional HD 109771 Facts and Figures

Visual Facts

Primary / Proper / Traditional NameHD 109771
Alternative NamesHD 109771, BD+12 2495
Spectral TypeK0 D~
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeStar
ColourOrange to Red
GalaxyMilky Way
Right Ascension (R.A.)12 37 12.5510146763
Declination (Dec.)+11 49 03.987105770
Distance from Earth4.67 Parallax (milliarcseconds)
 698.00 Light Years
 214.00 Parsecs
 44,140,360.96 Astronomical Units
Proper Motion Dec.0.72 milliarcseconds/year
Proper Motion RA.24.29 milliarcseconds/year
Radial Velocity-9.92 km/s

Companions (Multi-Star and Exoplanets) Facts

Exoplanet CountNone/Unaware

Sources and Links


Related 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