• Thumbnail for R Doradus
    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
  • Thumbnail for Betelgeuse
    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
  • Thumbnail for Dorado
    Dorado (redirect from Doradus)
    of S Doradus variable stars. The variable star R Doradus 5.73 has the largest-known apparent size of any star other than the Sun. Gamma Doradus is the...
    13 KB (1,473 words) - 18:28, 14 October 2024
  • Thumbnail for Tarantula Nebula
    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...
    15 KB (1,322 words) - 10:24, 1 January 2025
  • Thumbnail for S Doradus
    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...
    28 KB (3,188 words) - 14:15, 2 November 2024
  • Thumbnail for Arcturus
    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
  • Thumbnail for Angular diameter
    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...
    27 KB (1,939 words) - 05:16, 8 January 2025
  • Thumbnail for Minute and second of arc
    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
  • Thumbnail for List of largest stars
    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
  • Thumbnail for Star
    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
  • Thumbnail for The Scale of the Universe
    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...
    35 KB (423 words) - 16:13, 19 January 2025
  • Thumbnail for J band (infrared)
    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...
    5 KB (482 words) - 15:19, 8 August 2024
  • 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"...
    7 KB (133 words) - 13:36, 15 January 2025
  • Thumbnail for Aldebaran
    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
  • Thumbnail for Giant star
    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
  • Thumbnail for Gamma Doradus
    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...
    13 KB (749 words) - 22:41, 17 July 2024
  • Thumbnail for Calibrator star
    96755 Hubble Space Telescope May 1990 TrES-2 Kepler Space Telescope 2008 R Doradus Transiting Exoplanet Survey Satellite August 7, 2018 2MASS J17554042+6551277...
    4 KB (324 words) - 17:44, 6 August 2024
  • Thumbnail for Tychonic system
    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
  • Thumbnail for Orders of magnitude (length)
    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...
    4 KB (310 words) - 20:31, 17 July 2024
  • Thumbnail for Luminous blue 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
  • Thumbnail for AB Doradus
    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
  • Thumbnail for G Doradus
    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...
    14 KB (1,011 words) - 14:23, 30 January 2024
  • 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
  • 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...
    10 KB (1,356 words) - 01:40, 17 January 2025
  • Thumbnail for Gamma Doradus variable
    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
  • Thumbnail for Kappa Doradus
    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
  • Thumbnail for Pi1 Doradus
    Pi1 Doradus, Latinized from π1 Doradus, is a solitary star located in the southern constellation Dorado near the southwestern border with Mensa. It is...
    11 KB (916 words) - 11:36, 21 June 2024
  • Thumbnail for Beta Doradus
    Beta Doradus, Latinized from β Doradus, is the second brightest star in the southern constellation of Dorado. It is a Classical Cepheid variable, with...
    11 KB (806 words) - 19:32, 21 September 2024