:INFO
Terrestrial around Kepler-974
It is 0.61 times Earth's radius, closest in size to Mars, and 8.0 times Earth's mass. A year there lasts 4.2 hours. The host star Kepler-974 runs at 3584 K with 0.46 times the Sun's mass.

:COUNTER
4.2 hours: one full year, start to finish

:STATS
[icon:TARGET] Radius | 0.61 Earth radii
[icon:CHART] Mass | 8.0 Earth masses
[icon:CLOCK] One year | 4.2 hours
[icon:STAR] Host star | Kepler-974 at 3584 K
[icon:USERS] Distance | 438 light-years
[icon:TRENDING_DOWN] Starlight blocked | 0.015% at each transit

:TIMELINE
🔭🪐📅
2013-01-01 | KOI-1843.03
2016-01-01 | Kepler-974 b

:CHECKLIST
What the archive holds on this planet
[ ] A size. Yes.
[ ] A weight, not just a width. Yes.
[ ] A density, the one clue to composition. No.
[ ] A semi-major axis. No.
[ ] An observed temperature. No.
[ ] The shape of the orbit. No.

:PATH
What a crossing measures
How deep the star dims fixes the planet's size relative to it.

:NOTE
The size came from a crossing, the mass did not. That pairing is uncommon and it is what lets anyone say whether this is rock or gas.

:NOTE
Found by Kepler in 2013. The mission traded sky coverage for depth, holding one view for years. That bias runs through its whole catalogue and through this planet's discovery.

:NOTE
Kepler-974 has 2 known planets. Multi-planet systems are where orbital dynamics can be measured rather than assumed.

:LINK
https://exoplanetarchive.ipac.caltech.edu/overview/KOI-1843.03
Every parameter ever published for KOI-1843.03, at the NASA Exoplanet Archive