Hya | 1.99 | 30Alp Hya

Alphard is a relatively young giant star within the Hya constellation, a prominent and relatively bright constellation situated in the Southern Hemisphere. It is known for its unusually stable movement along the celestial plane and its distance from Earth, placing it as one of the closest stars to the Sun. The star’s magnitude is currently listed as 1.99, placing it firmly within the ‘luminous’ category of stars, a relatively modest brightness value. It doesn’t display a particularly vibrant colour; its spectral type appears to be a low-temperature white or yellow. It is located approximately 42 light-years from Earth.

Alphard was first observed in 1873 as part of a large set of measurements undertaken for its discovery in the region of the Pleiades star cluster. Because it resides so close to the Sun, it acts as a celestial beacon influencing the navigation of sea pilots, often viewed as a strategic point. Considering this proximity, the star’s placement is deeply embedded in the lore of many seafaring traditions, representing both steadfastness and the subtle pull of the world below. This stability – a key characteristic for navigation – has lent itself to association with a desire for dependable, unwavering guidance, regardless of time and surroundings.

Considering its location, it is appropriate to reflect on the enduring appeal of stars such as Alphard. It's a tangible point of light against the vast backdrop of space – a persistent presence that has captured and continues to capture the attention of observers. Their luminescence continues to provide a beacon for those beneath them.

How to see it

Alphard has a visual magnitude of about 1.99: under a reasonably dark sky it is typically reachable with the unaided eye.

Sky position

Equatorial coordinates for Alphard: right ascension 9h 27m 35s, declination −8° 39′ 31″ (J2000), in the region of the Hydra constellation (IAU figure Hya).

Hydra — Explore by constellation

Catalog context

Alphard. It appears in classical and modern catalogs as Bayer/Flamsteed designation 30Alp Hya, HIP 46390, HD 81797, Gaia DR3 HYG-HIP-46390. In the SkyKeepsake Hydra (Hya) browse hub it sits with other stars of the same IAU figure.

Catalog identifiers

Gaia

Gaia DR3 HYG-HIP-46390

HIP

46390

HD

81797

gaia_dr3

HYG-HIP-46390

Bayer / Flamsteed

30Alp Hya

Also known as

• 30Alp Hya
• Gaia DR3 TOP 5M HYG-HIP-46390
• HD 81797
• HIP 46390
• HYG-HIP-46390

Observed properties

Visual magnitude

1.99