
Home > Terms > Spanish, Latin American (XL) > magnitud aparente
magnitud aparente
1) A measure of how bright a star looks in the sky. The brighter the star, the smaller the apparent magnitude. A star that is one magnitude brighter than another (e.g., +1 versus +2) looks 2.5 times brighter. The brightest star of all, of course, is the Sun, whose apparent magnitude is -26.74, followed by Sirius, whose apparent magnitude is -1.46, Canopus (-0.72), Alpha Centauri (-0.27), Arcturus (-0.04), and Vega (+0.03). Stars of the Big Dipper are fainter, most of them around magnitude +2. On a clear, dark night, the unaided eye can see stars as faint as apparent magnitude +6, and the largest telescopes penetrate to apparent magnitude +30.
2) Measure of the observed brightness of a celestial object as seen from the Earth. It is a function of the star's intrinsic brightness, its distance from the observer, and the amount of absorption by interstellar matter between the star and the observer. The mv, of Sun, -26.5 mag. A sixth-magnitude star is just barely visible to the naked eye.
- Loại từ: noun
- Từ đồng nghĩa:
- Blossary:
- Ngành nghề/Lĩnh vực: Astronomy
- Category: General astronomy
- Company: Caltech
- Sản phẩm:
- Viết tắt-Từ viết tắt:
Ngôn ngữ khác:
Bạn muốn nói gì?
Terms in the News
Featured Terms
pasta
Italian for little worms. Vermicelli is a very thin spaghetti-shaped pasta.
Người đóng góp
Featured blossaries
Browers Terms By Category
- Legal documentation(5)
- Technical publications(1)
- Marketing documentation(1)
Documentation(7) Terms
- Zoological terms(611)
- Animal verbs(25)
Zoology(636) Terms
- Prevention & protection(6450)
- Fire fighting(286)
Fire safety(6736) Terms
- Contracts(640)
- Home improvement(270)
- Mortgage(171)
- Residential(37)
- Corporate(35)
- Commercial(31)
Real estate(1184) Terms
- Mapping science(4042)
- Soil science(1654)
- Physical oceanography(1561)
- Geology(1407)
- Seismology(488)
- Remote sensing(446)