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The central star of the Helix Nebula is a white dwarf of spectral type DAO. [19] It has the designations WD 2226-210, PHL 287, and GJ 9785. [1] The star has a radius of 0.025 solar radii (17,000 km), a mass of 0.678 M ☉, a temperature of 120,000 Kelvin and has an apparent magnitude of 13.5. [19]
white dwarf+A0V star candidate 1.5 0.9 astrometry 2024 has a mass range of 0.8-2.4 Jupiter masses. [29] [30] Central star of the Helix Nebula: yes candidate 7.31 transiting 2024 orbits the central white dwarf of the Helix Nebula, has a radius of 1 R J or 2.3 R 🜨 [31]
English: The Helix Nebula: a Gaseous Envelope Expelled By a Dying Star About the Object. Object Name: Helix Nebula, NGC 7293 or "The Eye of God" Object Description: Planetary Nebula; Position (J2000): R.A. 22h 29m 48.20s; Dec. -20° 49' 26.0" Constellation: Aquarius; Distance: About 690 light-years (213 parsecs)
Globules located far and close to the central star present different characteristics. On the near side of the Helix Nebula, the central dusty globule of each cometary knot appears dark against the background as it absorbs the [O III] 5007 Angstrom light emitted in the nebular envelope.
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Jewel Bug Nebula: NGC 7027: 1878 3.0 (approx.) 10 Cygnus: Helix Nebula: NGC 7293: 1824 0.68 +0.15 −0.08: 7.6 Aquarius: Little Dumbbell Nebula: M76: NGC 650, NGC 651: 1780 3.4 (approx.) 10.1 Perseus: Owl Nebula: M97: NGC 3587: 1781 2.6 (approx.) 9.9 Ursa Major: Twin Jet Nebula or Butterfly Nebula M2-9: 1947 2.1 14.7 Ophiuchus: NGC 7026: 1873 5 ...
Note and reference Planet according to IAU working definition L 34-26 WISEPA J075108.79-763449.6 (COCONUTS-2b) 36 11.3 6471 4.4-7.8 2011/2021 first discovered with WISE in 2011, but planet status was established in 2021 by taking the listed proper motion of the planet and matching it with the Gaia proper motion of the star [82] Mmin=4.4<13
Death Note Original Soundtrack II was first released in Japan on March 21, 2007. It features the new opening and closing themes by Maximum the Hormone in the TV size format. [73] The third CD, Death Note Original Soundtrack III was released on June 27, 2007. Tracks 1–21 were composed and arranged by Taniuchi, while tracks 22–28 were ...