Z8 GND 5296
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| z8_GND_5296 | |
|---|---|
 z8_GND_5296 image from the NASA/ESA Hubble Space Telescope in 2013 | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 12h 36m 37.892s[1] |
| Declination | +62° 18′ 08.54″[1] |
| Redshift | 7.5078±0.0004 |
| Heliocentric radial velocity | 291622±120 km/s |
| Distance | 13.1 billion ly (4.0 billion pc) (light travel distance) ≈30 billion ly (9.2 billion pc) (present comoving distance) |
| Apparent magnitude (V) | 25.6 (F160W) |
| Characteristics | |
| Type | Dwarf |
| Mass | 1.0+0.2 −0.1×109 M☉ |
| Other designations | |
| FIGS GN1 1292, J123637.89+621808.5, z7 GND 42912[1] | |
z8_GND_5296 is a dwarf galaxy[3] discovered in October 2013 which has the highest redshift that has been confirmed through the Lyman-alpha emission line of hydrogen,[2] placing it among the oldest and most distant known galaxies at approximately 13.1 billion light-years (4.0 Gpc) from Earth.[4][5] It is "seen as it was at a time just 700 million years after the Big Bang [...] when the universe was only about 5 percent of its current age of 13.8 billion years".[6] The galaxy is at a redshift of 7.51, and it is a neighbour to what was announced then as the second-most distant galaxy with a redshift of 7.2. The galaxy in its observable timeframe was producing stars at a phenomenal rate, equivalent in mass to about 330 Suns per year.[2]
The light reaching Earth from z8_GND_5296 shows its position over 13 billion years ago, having traveled a distance of more than 13 billion light-years. Due to the expansion of the universe, this position is now at about 30 billion light-years (9.2 Gpc) (comoving distance) from Earth.[7]
