← Back to dex
Rare exoplanet 35 EP

HD 74698 c

RA 130.0745° · Dec -71.8769° · exoplanet

Loading sky survey…
🌌 View in 3D star map
Tonight’s visibility

Computing the sky for your location…

Score breakdown

· 5 badges
35 pts · Rare
Rare 50 pts → Epic
  • Puffy low-density world +12
  • Orbits a Sun-like star +8
  • Multi-planet system +6
  • Confirmed exoplanet +5
  • Gas giant +4
Total score 35

15 more points to reach Epic.

Badges

  • Confirmed exoplanet · +5
  • Gas giant · +4
  • Puffy low-density world · +12
  • Multi-planet system · +6
  • Orbits a Sun-like star · +8

Trivia

Hard to believe

  • It would float. It is less dense than water. Drop it in a big enough ocean and the whole world would bob on the surface.

What it actually is

  • What it is made of. Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.
  • Crowded system. One of at least 2 planets orbiting its star.

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 7.8 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 January — that's when to go looking.

Could we get there?

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

Properties

density gcc
0.252
diameter km
178586.8
discovery facility
La Silla Observatory
discovery method
Radial Velocity
discovery year
2023
dist ly
169.8125
eccentricity
0.2
eq temp k
151.77
host star teff
5783
insolation
0.088
mag
7.78
mass earth
126
name
HD 74698 c
orbital period days
3449
radius earth
14
semi major au
4.5
spect
G5 V
sys num planets
2
sys num stars
1

About HD 74698 c

HD 74698 c is a rare exoplanet. It lies about 169.8 light-years from Earth, shines at apparent magnitude 7.78, has spectral type G5 V and has an equilibrium temperature near 152 K.

Lighter than Neptune — a puffed-up ball of hydrogen and helium with no surface anywhere on it to stand on.

How to see it

At apparent magnitude 7.78, it is an easy target for binoculars.

Like any astronomical target, HD 74698 c 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 HD 74698 c is a rare exoplanet

HD 74698 c scores 35 points on Spacedle's rarity scale, which places it in the rare tier. Another 15 points would lift it into a rarer tier.

That score comes from 5 science badges — Confirmed exoplanet, Gas giant, Puffy low-density world, Multi-planet system and Orbits a Sun-like star — 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.