WHL0137-LS
Most distant known star, discovered 2022 / From Wikipedia, the free encyclopedia
"Earendel (star)" redirects here. For the Germanic mythological figure, see Aurvandil. For the Tolkien topic, see Earendil.
WHL0137-LS, also known as Earendel, is a star located in the constellation of Cetus. Discovered in 2022 by the Hubble Space Telescope, it is the earliest and most distant known star, at a comoving distance of 28 billion light-years (8.6 billion parsecs).[2][5] The previous furthest known star, MACS J1149 Lensed Star 1, also known as Icarus, at a comoving distance of 14.4 billion light-years (4.4 billion parsecs),[6] was discovered by Hubble in 2018.[5] Stars like Earendel can be observed at cosmological distances thanks to the large magnification factors involved, that can exceed 1000. Other stars have been observed through this technique, such as Godzilla.
Quick Facts Constellation, Right ascension ...
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cetus |
Right ascension | 01h 37m 23.232s[1] |
Declination | –8° 27′ 52.20″[1] |
Astrometry | |
Distance | Comoving distance: 28 billion ly[2] |
Characteristics | |
Spectral type | B[3] |
Apparent magnitude (F435W) | 27.2[1] |
Variable type | Luminous blue variable star |
Details[4] | |
if a single star | |
Mass | 200 M☉ |
Radius | 103–393 R☉ |
Luminosity | 631,000–3,981,000 L☉ |
Temperature | 13,000–16,000 K |
if a binary (parameters highly uncertain) | |
Radius | component 1: 23 R☉ component 2: 184 R☉ |
Luminosity | component 1: 631,000 L☉ component 2: 200,000 L☉ |
Temperature | component 1: 34,000 K component 2: 9,000 K |
Other designations | |
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