Your guide to the Solar System and the night sky
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🌎  Observing from: Greenwich, United Kingdom [change]

HR4138

HR4138 is a main-sequence star in the constellation of Carina.

HR4138 visual magnitude is 4.74. Because of its moderate brightness, HR4138 should be easily visible from locations with dark skyes, while it can be barely visible, or not visible at all, from skyes affected by light pollution.

The table below summarizes the key facts about HR4138:

4.74
Main-sequence
HR4138 is below the horizon from Greenwich, United Kingdom [change].

Celestial coordinates and finder chart of HR4138

HR4138 is situated south of the celestial equator, as such, it is more easily visible from the southern emisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR4138 are provided in the following table:

10h 30m 20s
-71° 59’ 35”
292.41°
-12.07°
Carina

The simplified sky map below shows the position of HR4138 in the sky:

Finder chart HR4138 star
Simplified finder chart for HR4138.

Visibility of HR4138 from your location

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

HR4138 is currently not visible from Greenwich, United Kingdom [change]

Digitized Sky Survey image of HR4138

The image below is a photograph of HR4138 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 HR4138 is 0.025 arcsec per year in Right Ascension and -0.037 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4138 star
DSS2 image of HR4138. The red arrow shows the motion of HR4138 during the next 10000 years (4.17 arcmin in Right Ascension and -6.17 arcmin in declination);

Distance of HR4138 from the Sun and relative movement

HR4138 is distant 258.73 light years from the Sun and it is moving far from the Sun at the speed of 8 kilometers per second.

79.37 pc
258.73 ly
8 km/s
0.025 arcsec/year
-0.037 arcsec/year

Spectral properties of HR4138

HR4138 belongs to spectral class A1 and has a luminosity class of V corresponding to a main-sequence star.

0.24
A1V
9652K

The red dot in the diagram below shows where HR4138 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR4138. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR4138

SAO256722
SAO256722