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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
sunny DaytimeWhat's Visible Now?
All Constellations » Musca » 

HR4549

Altitude: -75.6°   Azimuth: 166.0°   Direction: South-South-East

HR4549 is a double main-sequence star in the constellation of Musca.

HR4549 visual magnitude is 4.9. Because of its moderate brightness, HR4549 should be easily visible from locations with dark skies, while it can be barely visible, or not visible at all, from skies affected by light pollution.

The proper motion of HR4549 is -0.039 arcsec per year in Right Ascension and -0.01 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR4549 star
DSS2 image of HR4549. The red arrow shows the motion of HR4549 during the next 10000 years (-6.50 arcmin in Right Ascension and -1.67 arcmin in declination);

Key facts about HR4549

4.9
Main-sequence

HR4549 is below the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: -75.6°
Azimuth: 166.0°
Direction: South-South-East

Celestial coordinates and finder chart of HR4549

HR4549 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 HR4549 are provided in the following table:

11h 51m 51s
-65° 12’ 21”
296.73°
-3.05°
Musca

The simplified sky map below shows the position of HR4549 in the sky:

Finder chart HR4549 star
Simplified finder chart for HR4549.

Visibility of HR4549 from your location

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

HR4549 is currently not visible from Greenwich, United Kingdom edit_location_alt

Distance of HR4549 from the Sun and relative movement

HR4549 is distant 338.17 light years from the Sun and it is moving far from the Sun at the speed of 21 kilometers per second.

103.73 pc
338.17 ly
21 km/s
-0.039 arcsec/year
-0.01 arcsec/year

Spectral properties of HR4549

HR4549 belongs to spectral class B4 and has a luminosity class of V corresponding to a main-sequence star.

-0.18
B4V
11744K

The red dot in the diagram below shows where HR4549 is situated in the HertzsprungÔÇôRussell diagram.

HR Diagram
H-R diagram showing the position of HR4549. Attribution: Richard Powell / CC BY-SA

HR4549 star system properties

HR4549 is a visual double star which can be observed with the help of medium or large telescopes. The table below shows key information about the HR4549 double sysyem:

4.9
7.1
2.2
1.8 arcsec

Alternative designations of HR4549

SAO251617
SAO251617