Rasalas: A radiant Cepheid variable star, found within the LMi constellation. Primarily a blue-white type, Rasalas demonstrates a remarkable pulsating brightness, exhibiting a period of approximately 7.2 days. Its magnitude is currently recorded as 3.53.
Rasalas is easily identifiable through its placement within the constellation LMi. Its observed brightness, averaging 3.53, strongly points to a Cepheid variable star – a pivotal type of star with a predictable luminosity tied to its pulsation period. The consistent timing of its pulsating brightness allows astronomers to measure distances with exceptional precision using standard astronomical measurements. Observations conducted over a period of 7.2 days, the star’s intrinsic luminosity is approximately 2.88 Solar Luminosity or 1.4 x 10^4 L<sub>solar</sub>. The calculated luminosity has an average value of 2.89 L<sub>solar</sub>.
For many astronomical observers, Rasalas, is chosen as a symbolic dedication. A gentle beacon in the heavens, mirroring a steady, unchanging rhythm – hinting at a foundational harmony, perhaps representing longevity and steadfastness. Its prominence within the LMi constellation warrants thoughtful consideration among stellar systems.
How to see it
Rasalas has a visual magnitude of about 3.53: under a reasonably dark sky it is typically reachable with the unaided eye.
Sky position
Equatorial coordinates for Rasalas: right ascension 9h 52m 46s, declination +26° 0′ 24″ (J2000), in the region of the Leo Minor constellation (IAU figure LMi).
Catalog context
Rasalas. It appears in classical and modern catalogs as Bayer/Flamsteed designation 24Mu Leo, HIP 48455, HD 85503, Gaia DR3 643819484617141504. In the SkyKeepsake Leo Minor (LMi) browse hub it sits with other stars of the same IAU figure.
Catalog identifiers
- Gaia
- Gaia DR3 643819484617141504
- HIP
- 48455
- HD
- 85503
- gaia_dr3
- 643819484617141504
- Bayer / Flamsteed
- 24Mu Leo
Also known as
- 24Mu Leo
- Gaia DR3 TOP 5M 643819484617141504
- HD 85503
- HIP 48455
Observed properties
- Visual magnitude
- 3.53