R Doradus (HD 29712 or P Doradus) is a red giant variable star in the far-southern constellation Dorado, close to the border with Reticulum. Its distance...
16 KB (1,334 words) - 06:52, 1 January 2025
Betelgeuse (redirect from H. R. 2061)
Earth-observed angular diameter of Betelgeuse is exceeded only by those of R Doradus and the Sun. Starting in October 2019, Betelgeuse began to dim noticeably...
175 KB (18,645 words) - 20:57, 30 January 2025
Tarantula Nebula (redirect from 30 Doradus)
The Tarantula Nebula (also known as 30 Doradus) is a large H II region in the Large Magellanic Cloud (LMC), forming its south-east corner (from Earth's...
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S Doradus was still uncertain, considered possibly to be a pre-main-sequence star, but during the next decade the consensus settled on the S Doradus type...
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a near-infrared J band magnitude of −2.2, only Betelgeuse (−2.9) and R Doradus (−2.6) are brighter. The lower output in visible light is due to a lower...
53 KB (5,331 words) - 15:08, 25 January 2025
from the Sun, the star with the largest angular diameter from Earth is R Doradus, a red giant with a diameter of 0.05″. Because of the effects of atmospheric...
28 KB (3,353 words) - 15:38, 13 December 2024
the horizon, δ = π − 2 arccos ( R R + h ) {\displaystyle \delta =\pi -2\arccos \left({\frac {R}{R+h}}\right)} where R is the radius of the sphere and...
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lower temperatures but with radii reaching up to many tens of thousands of R☉, comparable to some of the largest known black holes. The angular diameters...
250 KB (10,590 words) - 16:00, 21 January 2025
daylight. Other than the Sun, the star with the largest apparent size is R Doradus, with an angular diameter of only 0.057 arcseconds. The disks of most...
148 KB (16,401 words) - 16:12, 29 January 2025
point source in most observations (the largest angular diameter, that of R Doradus, is 0.057 ± 0.005 arcsec), whereas a galaxy may extend over several arcseconds...
9 KB (1,079 words) - 17:33, 23 August 2024
Gamma Doradus, Latinized from γ Doradus, is the third-brightest star in the southern constellation of Dorado. It is faintly visible to the naked eye with...
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of −2.99. The next brightest stars in the J band are Antares (−2.7), R Doradus (−2.6), Arcturus (−2.2), and Aldebaran (−2.1). In the J band Sirius is...
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meters Pistol Star 4.7 × 1011 meters 4.7 × 1011 meters R Doradus — 5.2 × 1011 meters S Doradus 7.7 × 1011 meters 7.7 × 1011 meters Distance from Jupiter...
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doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR. Barry, Don C. (January 1970), "Spectral Classification of a and F Stars"...
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With a near-infrared J band magnitude of −2.1, only Betelgeuse (−2.9), R Doradus (−2.6), and Arcturus (−2.2) are brighter at that wavelength. On 11 March...
54 KB (5,283 words) - 21:53, 21 December 2024
Luminous blue variable (redirect from S Doradus variable)
in their spectra and brightness. They are also known as S Doradus variables after S Doradus, one of the brightest stars of the Large Magellanic Cloud...
40 KB (4,912 words) - 04:35, 20 January 2025
giant. Arcturus (α Boötis), a K-type giant. Aldebaran, a K-type giant R Doradus, a M-type giant. Mira (ο Ceti), an M-type giant and prototype Mira variable...
17 KB (2,359 words) - 01:48, 30 January 2025
96755 Hubble Space Telescope May 1990 TrES-2 Kepler Space Telescope 2008 R Doradus Transiting Exoplanet Survey Satellite August 7, 2018 2MASS J17554042+6551277...
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be R Doradus, no larger than 0.057 ± 0.005 seconds of arc. Blair, 1990, 364. Moesgaard, 1972, 51. Blair, 1990, 364. Moesgaard, 1972, 52. Vermij R., "Putting...
21 KB (2,804 words) - 21:48, 28 October 2024
S2CID 26945389 Baines, Ellyn K.; Armstrong, J. Thomas; Schmitt, Henrique R.; Zavala, R. T.; Benson, James A.; Hutter, Donald J.; Tycner, Christopher; Belle...
188 KB (17,807 words) - 12:20, 30 January 2025
Eta2 Doradus, Latinized from η2 Doradus, is a star in the southern constellation of Dorado. It is visible to the naked eye as a dim, reddish star with...
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The binary star AB Doradus Ba/Bb orbits the primary AB Doradus A at an average distance of 135 astronomical units (AUs). AB Doradus C is a closer in companion...
13 KB (1,013 words) - 12:53, 12 January 2025
Gamma Doradus variables are variable stars which display variations in luminosity due to non-radial pulsations of their surface. The stars are typically...
22 KB (1,494 words) - 22:42, 17 July 2024
G Doradus (HD 37297; HR 1917; 28 G. Doradus) is a spectroscopic binary located in the southern constellation Dorado, the dolphinfish. It has an apparent...
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AB Doradus Moving Group is a group of about 30 associated stars that are moving through space together with the star AB Doradus. A moving group is distinguished...
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1051/0004-6361/200911976. ISSN 0004-6361. Lodieu, N.; Zapatero Osorio, M. R.; Martín, E. L.; Rebolo López, R.; Gauza, B. (2022-07-01). "Physical properties and trigonometric...
55 KB (3,720 words) - 12:10, 30 January 2025
Kappa Doradus, Latinized from κ Doradus, is a solitary star located in the southern constellation Dorado. It is faintly visible to the naked eye as a...
16 KB (1,273 words) - 16:58, 5 September 2023
Pi1 Doradus, Latinized from π1 Doradus, is a solitary star located in the southern constellation Dorado near the southwestern border with Mensa. It is...
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Pi2 Doradus, Latinized from π2 Doradus, is a solitary star located in the southern constellation Doradus. It is faintly visible to the naked eye as a yellow-hued...
10 KB (843 words) - 11:03, 1 October 2023