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AA Arietis

AA Arietis Facts

  • AA Arietis is a variable star that can be located in the constellation of Aries. The description is based on the spectral class.
  • AA Arietis is not part of the constellation outline but is within the borders of the constellation.
  • The star is calculated at being about 1802.01 light years away from us. Distance

AA Arietis's Alternative Names

HIP9619 is the reference name for the star in the Hipparcos Star Catalogue.

AA Arietis has alternative name(s) :- , AA Ari.

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+22 298.

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

Proper Motion of AA Arietis

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 -15.13 ± 0.58 milliarcseconds/year towards the north and 18.92 ± 1.03 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.

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 AA Arietis Facts and Figures

Visual Facts


Primary / Proper / Traditional NameAA Arietis
Alternative NamesHIP 9619, BD+22 298, AA Ari
Constellation's Main StarNo
Multiple Star SystemNo / Unknown
Star TypeVariable Star
GalaxyMilky Way
ConstellationAries
Galactic Latitude-37.04392678 degrees
Galactic Longitude143.88644720 degrees
Distance from Earth1.81000 Parallax (milliarcseconds)
 1802.01 Light Years
 552.49 Parsecs
 113,958,448.73 Astronomical Units
Proper Motion Dec.-15.13000 ± 0.58000 milliarcseconds/year
Proper Motion RA.18.92000 ± 1.03000 milliarcseconds/year

Companions (Multi-Star and Exoplanets) Facts


Exoplanet CountNone/Unaware

Variable Star Details


Mean Variability Period in Days0.062
Variable Magnitude Range (Brighter - Dimmer)8.757 - 8.856

Sources and Links


SIMBAD SourceLink

Related Stars


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