V404 Cygni

Summary

V404 Cygni is a binary star^[1]. It ranks in the top 10% of binary_star entities by monthly Wikipedia readership (62 views/month).^[2]

Key Facts

• V404 Cygni's image is recorded as V404Cyg XRT halo fullsize.jpg^[3].
• V404 Cygni's instance of is recorded as binary star^[4].
• V404 Cygni's instance of is recorded as astrophysical X-ray source^[5].
• V404 Cygni's instance of is recorded as nova^[6].
• V404 Cygni's instance of is recorded as high-mass X-ray binary^[7].
• V404 Cygni's instance of is recorded as cataclysmic variable star^[8].
• V404 Cygni's instance of is recorded as near-infrared source^[9].
• V404 Cygni's constellation is recorded as Cygnus^[10].
• V404 Cygni's spectral class is recorded as G9/K0III/V^[11].
• V404 Cygni's Commons category is recorded as V404 Cygni^[12].
• V404 Cygni's catalog code is recorded as 2MASS J20240382+3352021^[13].
• V404 Cygni's catalog code is recorded as V404 Cyg^[14].
• V404 Cygni's catalog code is recorded as 1RXS J202405.3+335157^[15].
• V404 Cygni's catalog code is recorded as INTREF 1021^[16].
• V404 Cygni's catalog code is recorded as AAVSO 2020+33^[17].
• V404 Cygni's catalog code is recorded as TIC 136874944^[18].
• V404 Cygni's catalog code is recorded as Gaia DR2 2056188624872569088^[19].
• V404 Cygni's Freebase ID is recorded as /m/0ds9kzb^[20].
• V404 Cygni's type of variable star is recorded as nova^[21].
• V404 Cygni's apparent magnitude is recorded as {'amount': '+14.50'}^[22].
• V404 Cygni's apparent magnitude is recorded as {'amount': '+14.20'}^[23].
• V404 Cygni's apparent magnitude is recorded as {'amount': '+12.7'}^[24].
• V404 Cygni's apparent magnitude is recorded as {'amount': '+13.575'}^[25].
• V404 Cygni's apparent magnitude is recorded as {'amount': '+12.684'}^[26].
• V404 Cygni's apparent magnitude is recorded as {'amount': '+12.321'}^[27].

Body

Designation and Status

Recorded instance of include binary star^[4], astrophysical X-ray source^[5], nova^[6], high-mass X-ray binary^[7], cataclysmic variable star^[8], and near-infrared source^[9].

History and Context

Catalog codes include 2MASS J20240382+3352021^[13], V404 Cyg^[14], 1RXS J202405.3+335157^[15], INTREF 1021^[16], AAVSO 2020+33^[17], and TIC 136874944^[18].

Why It Matters

V404 Cygni ranks in the top 10% of binary_star entities by monthly Wikipedia readership (62 views/month).^[2] It has Wikipedia articles in 16 language editions, a strong signal of global cultural recognition.^[28] It is known by 13 alternative names across languages and contexts.^[29]