Tri

30.9748°, 42.3297° is a star within the Tri constellation. Almach is a relatively young, faint star within this region of the sky. The star is classified as a spectral type of white dwarf, situated within a nebula of rich red color. Observations indicate Almach has a magnitude of just 2.1, presenting as a relatively modest point of light in the background of the Milky Way. While it displays characteristics expected for a white dwarf star – predominantly hydrogen and helium – it is unusually bright compared to many other objects within its celestial neighborhood, and appears to be a rather isolated individual. The brightness of the star, combined with its location, means that Almach is often noticeable as a pale smudge in the night sky.

Many celestial cartographers dedicate significant observational effort to studying Almach, particularly among amateur astronomers. The star’s prominence in the Tri constellation, coupled with its relatively low magnitude allows for increased scrutiny, fostering a connection within the local astronomical sphere; it is frequently utilized as a reference point in preliminary observations. Researchers typically focus on its evolutionary stage – being a white dwarf – and tracking its luminosity and color shifts, seeking to understand the dynamics of stellar evolution within the Tri region, and particularly how Almach holds its position amongst other objects with similar characteristics. This star has held significance, historically, amongst the first amateur astronomers using techniques like star charts and photographic results.

How to see it

Almach has a visual magnitude of about 2.10: under a reasonably dark sky it is typically reachable with the unaided eye.

Sky position

Equatorial coordinates for Almach: right ascension 2h 3m 54s, declination +42° 19′ 47″ (J2000), in the region of the Triangulum constellation (IAU figure Tri).

Triangulum — Explore by constellation

Catalog context

Almach. It appears in classical and modern catalogs as Bayer/Flamsteed designation 57Gam1And, HIP 9640, HD 12533, Gaia DR3 HYG-HIP-9640. In the SkyKeepsake Triangulum (Tri) browse hub it sits with other stars of the same IAU figure.

Catalog identifiers

Gaia

Gaia DR3 HYG-HIP-9640

HIP

9640

HD

12533

gaia_dr3

HYG-HIP-9640

Bayer / Flamsteed

57Gam1And

Also known as

• 57Gam1And
• Gaia DR3 TOP 5M HYG-HIP-9640
• HD 12533
• HIP 9640
• HYG-HIP-9640

Observed properties

Visual magnitude

2.10