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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
SunriseRise: 6:35  
clear_day Transit: 12:10  
SunsetSet: 17:45
wb_twilight Astronomical TwilightWhat's Visible Now?
All Constellations » Puppis » 


Altitude: -50.8°   Azimuth: 257.3°   Direction: West-South-West

HR3101 is a double main-sequence star in the constellation of Puppis.

HR3101 visual magnitude is 6.02. Because of its reltive faintness, HR3101 should be visible only from locations with dark skies, while it is not visible at all from skies affected by light pollution.

The proper motion of HR3101 is -0.012 arcsec per year in Right Ascension and 0.002 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR3101 star
DSS2 image of HR3101. The red arrow shows the motion of HR3101 during the next 10000 years (-2.00 arcmin in Right Ascension and 0.33 arcmin in declination);

Key facts about HR3101


HR3101 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -50.8°
Azimuth: 257.3°
Direction: West-South-West

Celestial coordinates and finder chart of HR3101

HR3101 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 HR3101 are provided in the following table:

07h 55m 46s
-43° 50’ 41”

The simplified sky map below shows the position of HR3101 in the sky:

Finder chart HR3101 star
Simplified finder chart for HR3101.

Visibility of HR3101 from your location

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

HR3101 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR3101 from the Sun and relative movement

HR3101 is distant 855.64 light years from the Sun and it is moving far from the Sun at the speed of 14 kilometers per second.

262.47 pc
855.64 ly
14 km/s
-0.012 arcsec/year
0.002 arcsec/year

Spectral properties of HR3101

HR3101 belongs to spectral class B6 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR3101 is situated in the Hertzsprungā€“Russell diagram.

HR Diagram
H-R diagram showing the position of HR3101. Attribution: Richard Powell / CC BY-SA

HR3101 star system properties

HR3101 is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the HR3101 double sysyem:

0.7 arcsec

Alternative designations of HR3101