Rare exoplanet 45 EP
HD 23472 e
RA 55.4590° · Dec -62.7673° · exoplanet
Score breakdown
· 5 badgesRare 46 pts → Epic
- Earth-sized +16
- Richly packed system +14
- Multi-planet system +6
- Confirmed exoplanet +5
- Found by TESS +4
Total score 45
1 more point to reach Epic.
Badges
- Confirmed exoplanet · +5
- Earth-sized · +16
- Multi-planet system · +6
- Richly packed system · +14
- Found by TESS · +4
Trivia
What makes it special
- Packed system. Crammed into a system of five or more planets.
Could we get there?
- Verdict. Hopelessly far for any craft humanity can build today.
Getting there
- Aboard Voyager 1. ≈ 2.2 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 198.8 thousand years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 1273 years in a starship at a tenth of light speed.
- Distance. 127 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1899.
Saying hello
- Say hello. A radio message and its reply would take 255 years round-trip.
Standing on it
- A year here. A full year lasts just 7.9 Earth days.
By the numbers
- Size. Around 82% of Earth's width.
- Mass. About 0.7× the mass of Earth.
- Your weight. You'd weigh about 1.1× your Earth weight standing here.
- Temperature. Around 450°C — hotter than a self-cleaning oven.
How we found it
- Discovery. Found by Transiting Exoplanet Survey Satellite (TESS) using the transit method.
Cosmic context
- Crowded system. One of at least 5 planets orbiting its star.
Properties
- density gcc
- 7.5
- discovery facility
- Transiting Exoplanet Survey Satellite (TESS)
- discovery method
- Transit
- dist ly
- 127.3121
- eccentricity
- 0.07
- eq temp k
- 723
- insolation
- 46.7
- mass earth
- 0.72
- name
- HD 23472 e
- orbital period days
- 7.9075
- radius earth
- 0.818
- sys num planets
- 5