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  2. G-type main-sequence star - Wikipedia

    en.wikipedia.org/wiki/G-type_main-sequence_star

    A G-type main-sequence star (spectral type: G-V), also often, and imprecisely, called a yellow dwarf, or G star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.9 to 1.1 solar masses and an effective temperature between about 5,300 and 6,000 K (5,000 and 5,700 °C ; 9,100 and 10,000 °F ).

  3. Habitability of yellow dwarf systems - Wikipedia

    en.wikipedia.org/wiki/Habitability_of_yellow...

    A G2V-type yellow dwarf like the Sun belongs to Kepler-452, with an estimated age of 6 billion years (6 Ga) versus the solar system's 4.5 Ga. [ 46 ] The mass of its star is slightly higher than that of the Sun, 1.04 M ☉ , so despite the fact that it completes an orbit around it every 385 days versus 365 terrestrial days, it is warmer than the ...

  4. PSR J1719−1438 b - Wikipedia

    en.wikipedia.org/wiki/PSR_J1719%E2%88%921438_b

    It is highly unlikely that this planet would have formed before its parent pulsar, as the resulting supernova would destroy any nearby planets. It has been proposed that PSR J1719−1438 b is not a planet but a star. Specifically, PSR J1719−1438 b was a yellow dwarf star similar to the Sun in a binary with PSR J1719−1438, a higher-mass star.

  5. List of possible dwarf planets - Wikipedia

    en.wikipedia.org/wiki/List_of_possible_dwarf_planets

    The number of dwarf planets in the Solar System is unknown. Estimates have run as high as 200 in the Kuiper belt [1] and over 10,000 in the region beyond. [2] However, consideration of the surprisingly low densities of many large trans-Neptunian objects, as well as spectroscopic analysis of their surfaces, suggests that the number of dwarf planets may be much lower, perhaps only nine among ...

  6. List of directly imaged exoplanets - Wikipedia

    en.wikipedia.org/wiki/List_of_directly_imaged_e...

    Motion interpolation of seven images of the HR 8799 system taken from the W. M. Keck Observatory over seven years, featuring four exoplanets. This is a list of extrasolar planets that have been directly observed, sorted by observed separations. This method works best for young planets that emit infrared light and are far from the glare of the star.

  7. List of natural satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_natural_satellites

    Of the Solar System's eight planets and its nine most likely dwarf planets, six planets and seven dwarf planets are known to be orbited by at least 300 natural satellites, or moons. At least 19 of them are large enough to be gravitationally rounded; of these, all are covered by a crust of ice except for Earth's Moon and Jupiter's Io. [1]

  8. Kappa1 Ceti - Wikipedia

    en.wikipedia.org/wiki/Kappa1_Ceti

    Kappa 1 Ceti is a yellow dwarf star of the spectral type G5Vv. [3] Since 1943, the spectrum of this star has served as one of the stable anchor points by which other stars are classified. [14] The star has roughly the same mass as the Sun, with 95% of the Sun's radius [8] but only 85 percent of the luminosity. [9]

  9. (90568) 2004 GV9 - Wikipedia

    en.wikipedia.org/wiki/(90568)_2004_GV9

    M. E. Brown estimates that is very likely a dwarf planet. [9] A diameter of 680 ± 34 km has been determined from combined observations of the Herschel and Spitzer space telescopes. [ 5 ] Tancredi notes that light-curve-amplitude analysis shows only small deviations, suggesting that (90568) 2004 GV 9 could be a spheroid with small albedo spots ...