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HD 198028

HD 198028 Facts

  • HD 198028 is a subgiant star that can be located in the constellation of Capricornus. The description is based on the spectral class.
  • HD 198028 is not part of the constellation outline but is within the borders of the constellation.
  • Based on the spectral type (F3IV C) of the star, the star's colour is yellow to white .
  • The star is calculated at being about 400.93 light years away from us. Distance

HD 198028's Alternative Names

The Id of the star in the Henry Draper catalogue is HD198028.

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

Location of HD 198028

The location of the subgiant 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 198028, the location is 20 48 07.7160990874 and -16 20 53.841907324 .

Radial Velocity and Proper Motion of HD 198028

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 -58.24 milliarcseconds/year towards the north and 0.90 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 0.56000 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 HD 198028

HD 198028 Colour and Temperature

Based on the star's spectral type of F3IV C , HD 198028's colour and type is yellow to white subgiant star. Based on the star's spectral, the stars temperature is between 6,000.00 and 7,500.00 degrees kelvin.

Distance to HD 198028

The Parallax of the star is given as 8.13520 which gives a calculated distance to HD 198028 of 400.93 light years from the Earth or 122.92 parsecs. It is about 2,356,917,270,870,505 miles from Earth.

The star is roughly 25,353,893.32 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 HD 198028

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)
Walking467,217,581,266.24
Car1202,240,586,042.21
Airbus A380736365,312,941.66
Speed of Sound (Mach 1)767.269350,425,111.75
Concorde (Mach 2)1,534.54175,212,327.52
New Horizons Probe33,0008,147,585.61
Speed of Light670,616,629.00400.93

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Additional HD 198028 Facts and Figures

Visual Facts


Primary / Proper / Traditional NameHD 198028
Alternative NamesHD 198028
Spectral TypeF3IV C
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeSubgiant Star
ColourYellow - White
GalaxyMilky Way
ConstellationCapricornus
Right Ascension (R.A.)20 48 07.7160990874
Declination (Dec.)-16 20 53.841907324
Distance from Earth8.13520 Parallax (milliarcseconds)
 400.93 Light Years
 122.92 Parsecs
 25,353,893.32 Astronomical Units
Proper Motion Dec.-58.24100 milliarcseconds/year
Proper Motion RA.0.90300 milliarcseconds/year
Radial Velocity0.56000 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Estimated Calculated Facts


Calculated Temperature Range6,000.00 - 7,500.00

Sources and Links


Sourcehttp://simbad.u-strasbg.fr/simbad/sim-id?Ident=hd%20198028

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