HD1
High-redshift galaxy that is one of the oldest and most distant known galaxies / From Wikipedia, the free encyclopedia
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For other uses, see HD1 (disambiguation).
"HD2" redirects here. For other uses, see HD2 (disambiguation).
HD1 is a proposed high-redshift galaxy, which is considered (as of April 2022) to be one of the earliest and most distant known galaxies yet identified in the observable universe. The galaxy, with an estimated redshift of approximately z = 13.27, is seen as it was about 324 million years after the Big Bang, which was 13.787 billion years ago.[6] It has a light-travel distance (lookback time) of 13.463 billion light-years from Earth, and, due to the expansion of the universe, a present proper distance of 33.288 billion light-years.[5]
Quick Facts Observation data (J2000 epoch), Constellation ...
HD1 | |
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Observation data (J2000 epoch) | |
Constellation | Sextans[2][3] |
Right ascension | 10h 01m 51.31s[2] |
Declination | 02° 32′ 50.0″[2] |
Redshift | 13.27[2] |
Distance |
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