About TOI-1859 b
TOI-1859 b is a common exoplanet. It lies about 731.8 light-years from Earth, has an equilibrium temperature near 615 K, spans roughly 9.75 Earth radii and weighs about 68.6 Earth masses.
About 9.8× the width of Earth.
Common exoplanet 22 EP
TOI-1859 b
RA 279.8318° · Dec 69.5229° · exoplanet
Score breakdown
· 4 badgesCommon 24 pts → Uncommon
- Eccentric orbit +9
- Confirmed exoplanet +5
- Gas giant +4
- Found by TESS +4
Total score 22
2 more points to reach Uncommon.
Badges
- Confirmed exoplanet · +5
- Gas giant · +4
- Eccentric orbit · +9
- Found by TESS · +4
Trivia
Could we get there?
- Verdict. Hopelessly far for any craft humanity can build today.
Getting there
- Aboard Voyager 1. ≈ 12.9 million years at Voyager 1's speed (17 km/s).
- Fastest probe ever. ≈ 1.1 million years even at the Parker Solar Probe's 192 km/s.
- At 10% light speed. ≈ 7318 years in a starship at a tenth of light speed.
- Distance. 732 light-years from Earth.
Look-back time
- Look-back time. The light you'd see left around the year 1294.
Saying hello
- Say hello. A radio message and its reply would take 1464 years round-trip.
Standing on it
- A year here. A full year lasts just 63.5 Earth days.
By the numbers
- Size. About 9.8× the width of Earth.
- Volume. About 927 Earths could fit inside it.
- Mass. Roughly 68.6× Earth's mass — about 0.2 Jupiters.
- Your weight. You'd weigh about 0.7× your Earth weight standing here.
- Density. Less dense than water — drop it in a big enough ocean and it would float.
- Temperature. A scorching 342°C on average.
How we found it
- Discovery. Found by Transiting Exoplanet Survey Satellite (TESS) using the transit method.
Properties
- density gcc
- 0.406
- discovery facility
- Transiting Exoplanet Survey Satellite (TESS)
- discovery method
- Transit
- dist ly
- 731.8451
- eccentricity
- 0.57
- eq temp k
- 615
- insolation
- 23.786
- mass earth
- 68.6
- name
- TOI-1859 b
- orbital period days
- 63.4835
- radius earth
- 9.7518
- sys num planets
- 1
How to see it
Like any astronomical target, TOI-1859 b is best seen from a dark site away from city lights, and when it is above the horizon depends on your latitude and the time of year. The visibility panel above works out tonight's viewing window for your saved location.
Why TOI-1859 b is a common exoplanet
TOI-1859 b scores 22 points on Spacedle's rarity scale, which places it in the common tier. Another 2 points would lift it into a rarer tier.
That score comes from 4 science badges — Confirmed exoplanet, Gas giant, Eccentric orbit and Found by TESS — each earned for a real, measurable property of the object. Rarity on Spacedle is never random: the more remarkable an object's astrophysics, the more badges it collects, the higher it scores, and the rarer it ranks.