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Uncommon exoplanet 33 EP

DS Tuc A b

RA 354.9155° · Dec -69.1960° · exoplanet

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Score breakdown

· 5 badges
33 pts · Uncommon
Uncommon 34 pts → Rare
  • Two suns in its sky +12
  • Orbits a Sun-like star +8
  • Confirmed exoplanet +5
  • Neptune-like +4
  • Found by TESS +4
Total score 33

1 more point to reach Rare.

Badges

  • Confirmed exoplanet · +5
  • Neptune-like · +4
  • Found by TESS · +4
  • Orbits a Sun-like star · +8
  • Two suns in its sky · +12

Trivia

What it actually is

  • Hugging its star. It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

Sense of scale

  • In perspective. Far away by human standards, yet still a local address inside the Milky Way's spiral arms.

Find it in the sky

  • How to spot it. At magnitude 8.2 it is just past naked-eye reach — ordinary binoculars will pull it in.
  • Southern sky only. So far south it never rises for most of the northern hemisphere. To see it you'd have to travel to Chile, South Africa or Australia.
  • Best time of year. It stands highest in the middle of the night around September — that's when to go looking.

Could we get there?

  • Verdict. Hopelessly far for any craft humanity can build today.

Getting there

  • Aboard Voyager 1. ≈ 2.5 million years at Voyager 1's speed (17 km/s).
  • Fastest probe ever. ≈ 224.4 thousand years even at the Parker Solar Probe's 192 km/s.

Properties

diameter km
72710.34
discovery facility
Transiting Exoplanet Survey Satellite (TESS)
discovery method
Transit
discovery year
2019
dist ly
143.7115
eccentricity
0
eq temp k
850
host star teff
5428
inclination
89.5
insolation
115.8276
mag
8.17
mass earth
413.179
multi star system
yes
name
DS Tuc A b
orbital period days
8.1383
radius earth
5.7
spect
G6 V
sys num planets
1
sys num stars
2

About DS Tuc A b

DS Tuc A b is an uncommon exoplanet. It lies about 143.7 light-years from Earth, shines at apparent magnitude 8.17, has spectral type G6 V and has an equilibrium temperature near 850 K.

It orbits closer to its star than Mercury does to the Sun, completing a lap in less time than Mercury takes.

How to see it

At apparent magnitude 8.17, it is an easy target for binoculars.

Like any astronomical target, DS Tuc A 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 DS Tuc A b is an uncommon exoplanet

DS Tuc A b scores 33 points on Spacedle's rarity scale, which places it in the uncommon tier. Another 1 point would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Neptune-like, Found by TESS, Orbits a Sun-like star and Two suns in its sky — 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.