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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: 7:47  
clear_day Transit: 11:49  
SunsetSet: 15:50 south
sleep NighttimeWhat's Visible Now?
All Constellations » Sextans » 

HR3901

Altitude: -34.5°   Azimuth: 49.2°   Direction: North-East

HR3901 is a main-sequence star in the constellation of Sextans.

HR3901 visual magnitude is 6.42. Because of its reltive faintness, HR3901 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 HR3901:

6.42
Main-sequence

HR3901 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -34.5°
Azimuth: 49.2°
Direction: North-East

Celestial coordinates and finder chart of HR3901

HR3901 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR3901 are provided in the following table:

09h 51m 21s
-06° 10’ 54”
243.56°
35.19°
Sextans

The simplified sky map below shows the position of HR3901 in the sky:

Finder chart HR3901 star
Simplified finder chart for HR3901.

Visibility of HR3901 from your location

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

Today's HR3901 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 96.2°
Max altitude: 32.3°
Azimuth: 263.8°

Digitized Sky Survey image of HR3901

The image below is a photograph of HR3901 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 HR3901 is -0.125 arcsec per year in Right Ascension and 0.06 arcsec per year in Declination and the associated displacement for the next 1000 years is represented with the red arrow.

Image of HR3901 star
DSS2 image of HR3901. The red arrow shows the motion of HR3901 during the next 1000 years (-2.08 arcmin in Right Ascension and 1.00 arcmin in declination);

Distance of HR3901 from the Sun and relative movement

HR3901 is distant 145.21 light years from the Sun and it is moving far from the Sun at the speed of 36 kilometers per second.

44.54 pc
145.21 ly
36 km/s
-0.125 arcsec/year
0.06 arcsec/year

Spectral properties of HR3901

HR3901 belongs to spectral class F8 and has a luminosity class of V corresponding to a main-sequence star.

3.18
F8V
6047K

The red dot in the diagram below shows where HR3901 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR3901. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR3901

SAO137185
SAO137185