The Auspice of Auspices
Star Name

The Auspice of Auspices

The 24th Arab lunar station

سعد السعود

Star Names

The Auspice of Auspices (sa’d as-su’ud)

The Auspice of Auspices is one of the ten Auspicious Asterisms (as-su’ud). The Arabic term indicates good fortune or something that is auspicious, especially a star. The Auspicious Asterisms are all pairs of otherwise unremarkable stars, except for one that is comprised of four stars. The Auspice of Auspices was most sought after for good fortune among the ten Auspicious Asterisms, thus lending to its name. Ibn Qutuayba said the Auspice of Auspices was an asterism containing three stars, one bright and two dim, but most other accounts mentioned only two stars, one bright and one dim.

The Auspice of Auspices (sa'd as-su'ud) as it appears in the west about 45 minutes before sunrise in early August.

The Auspice of Auspices (sa’d as-su’ud) as it appears in the west about 45 minutes before sunrise in early August. Sky simulations made with Stellarium.


A pair of stars close to each other, one of which is dimmer than the other.

Modern Identification

β AQR (Sadalsuud), yellow supergiant star, magnitude 2.9
ξ AQR, white star, magnitude 4.7


Ibn Qutayba (d. 879 CE) reported that the Auspice of Auspices was said to rise on the morning of February 13 and set on the morning of August 15. On account of the precession of the equinoxes, today we can expect to observe the Auspice of Auspices setting in late August and rising in late February, as seen from the latitude of Tucson. (See How to Observe on the About page for more on this topic.)

Rain Stars

The Auspicious Asterisms do not figure in the calendar of the rains stars.

Lunar Stations

In early listings of the lunar stations, the Auspice of Auspices is the 26th station of the year. This was later changed to the 24th lunar station after the stations were adjusted to begin with the vernal equinox.

 Related Stars and Celestial Complexes

The Auspice of Auspices is part of the Auspicious Asterisms (as-su’ud, السعود) folkloric celestial complex.

 Related Blog Posts

Auspicious Vultures in the Dark Sky