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A Complete Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 7:51  
clear_day Transit: 11:50  
SunsetSet: 15:49 south
sleep NighttimeWhat's Visible Now?
All Constellations » Auriga » 


Altitude: 81.4°   Azimuth: 148.8°   Direction: South-South-East

HR2557 is a variable giant star in the constellation of Auriga.

HR2557 visual magnitude is 6.13. Because of its reltive faintness, HR2557 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR2557:


HR2557 is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 81.4°
Azimuth: 148.8°
Direction: South-South-East

Celestial coordinates and finder chart of HR2557

HR2557 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR2557 are provided in the following table:

06h 55m 14s
+43° 54’ 35”

The simplified sky map below shows the position of HR2557 in the sky:

Finder chart HR2557 star
Simplified finder chart for HR2557.

Visibility of HR2557 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

HR2557 is circumpolar and transits at 01:45 UTC (altitude: 82.4°)

Digitized Sky Survey image of HR2557

The image below is a photograph of HR2557 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR2557 is 0.01 arcsec per year in Right Ascension and -0.009 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2557 star
DSS2 image of HR2557. The red arrow shows the motion of HR2557 during the next 10000 years (1.67 arcmin in Right Ascension and -1.50 arcmin in declination);

Distance of HR2557 from the Sun and relative movement

HR2557 is distant 869.33 light years from the Sun and it is moving towards the Sun at the speed of 7 kilometers per second.

266.67 pc
869.33 ly
-7 km/s
0.01 arcsec/year
-0.009 arcsec/year

Spectral properties of HR2557

HR2557 belongs to spectral class A9 and has a luminosity class of III corresponding to a giant star.


The red dot in the diagram below shows where HR2557 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR2557. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2557