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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: 7:40  
clear_day Transit: 11:47  
SunsetSet: 15:53 south
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All Constellations » Pictor » 

HR2151

Altitude: -21.6°   Azimuth: 181.1°   Direction: South

HR2151 is a variable giant star in the constellation of Pictor.

HR2151 visual magnitude is 6.45. Because of its reltive faintness, HR2151 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 HR2151:

6.45
Giant

HR2151 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -21.6°
Azimuth: 181.1°
Direction: South

Celestial coordinates and finder chart of HR2151

HR2151 is situated south of the celestial equator, as such, it is more easily visible from the southern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR2151 are provided in the following table:

06h 02m 09s
-60° 05’ 48”
268.97°
-29.34°
Pictor

The simplified sky map below shows the position of HR2151 in the sky:

Finder chart HR2151 star
Simplified finder chart for HR2151.

Visibility of HR2151 from your location

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

HR2151 is currently not visible from Greenwich, United Kingdom edit_location_alt

Digitized Sky Survey image of HR2151

The image below is a photograph of HR2151 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 HR2151 is 0.01 arcsec per year in Right Ascension and 0.004 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR2151 star
DSS2 image of HR2151. The red arrow shows the motion of HR2151 during the next 10000 years (1.67 arcmin in Right Ascension and 0.67 arcmin in declination);

Distance of HR2151 from the Sun and relative movement

HR2151 is distant 825.32 light years from the Sun and it is moving towards the Sun at the speed of 51 kilometers per second.

253.16 pc
825.32 ly
-51 km/s
0.01 arcsec/year
0.004 arcsec/year

Spectral properties of HR2151

HR2151 belongs to spectral class M4 and has a luminosity class of III corresponding to a giant star.

-0.57
M4III
3677K

The red dot in the diagram below shows where HR2151 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR2151. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR2151

SAO249424
SAO249424