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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 6:49  
clear_day Transit: 12:50  
SunsetSet: 18:50 south
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All Constellations » Hercules » 

Maasym - λ Herculis (lambda Herculis)

Altitude: 51.3°   Azimuth: 244.0°   Direction: West-South-West

Maasym, also designated as λ Herculis (lambda Herculis), is a variable giant star in the constellation of Hercules.

Maasym visual magnitude is 4.41. Because of its moderate brightness, Maasym 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 Maasym:


Maasym - λ Herculis (lambda Herculis) is above the horizon from Greenwich, United Kingdom edit_location_alt.

Altitude: 51.3°
Azimuth: 244.0°
Direction: West-South-West

Celestial coordinates and finder chart of Maasym

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

17h 30m 44s
+26° 06’ 38”

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

Finder chart Maasym - λ Herculis (lambda Herculis) star
Simplified finder chart for Maasym - λ Herculis (lambda Herculis).

Visibility of Maasym 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 Maasym - λ Herculis (lambda Herculis) 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: 63.9°
Max altitude: 64.6°
Azimuth: 296.1°

Digitized Sky Survey image of Maasym

The image below is a photograph of Maasym 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 Maasym is 0.02 arcsec per year in Right Ascension and 0.018 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of Maasym - λ Herculis (lambda Herculis) star
DSS2 image of Maasym. The red arrow shows the motion of Maasym during the next 10000 years (3.33 arcmin in Right Ascension and 3.00 arcmin in declination);

Distance of Maasym from the Sun and relative movement

Maasym is distant 367.12 light years from the Sun and it is moving towards the Sun at the speed of 26 kilometers per second.

112.61 pc
367.12 ly
-26 km/s
0.02 arcsec/year
0.018 arcsec/year

Spectral properties of Maasym

Maasym belongs to spectral class K3 and has a luminosity class of III corresponding to a giant star.


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

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

Alternative designations of Maasym

λ Herculis
(lambda Herculis)
76 Herculis