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RR Andromedae (S Star) Facts

RR Andromedae Facts

RR Andromedae's Alternative Names

The Id of the star in the Henry Draper catalogue is HD4895.

RR Andromedae has alternative name(s) :- RR And.

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

Location of RR Andromedae

The location of the S-Type 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 RR Andromedae, the location is 00h 51m 23.2794895895 and +34° 22` 36.302643717 .

Radial Velocity and Proper Motion of RR Andromedae

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 -2.36 milliarcseconds/year towards the north and -2.52 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 -71.00 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 RR Andromedae

RR Andromedae Colour and Temperature

RR Andromedae has a spectral type of S6-7/3-3.5 e.

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Additional RR Andromedae Facts and Figures

Visual Facts


Primary / Proper / Traditional NameRR Andromedae
Alternative NamesRR And, HD 4895
Spectral TypeS6-7/3-3.5 e
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeS-Type Star
GalaxyMilky Way
ConstellationAndromeda
Right Ascension (R.A.)00h 51m 23.2794895895
Declination (Dec.)+34° 22` 36.302643717
Proper Motion Dec.-2.36 milliarcseconds/year
Proper Motion RA.-2.52 milliarcseconds/year
Radial Velocity-71.00 km/s

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Related Stars


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