TOI-3877 is 1,611 light-years from the Sun. The NASA Exoplanet Archive lists 1 planet around this 5,731 K star; the first was found in 2025 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DTOI-3877 b goes round its star every 4.12 days, 21 times as often as Mercury goes round the Sun.
| Surface temperature | 5,731 K |
| Mass | 1.16 solar masses |
| Radius | 1.445 solar radii |
| Luminosity | 2.03 times the Sun |
| Apparent magnitude | 12.215 |
| Age | about 5.9 billion years |
| Distance from the Sun | 1610.5 light-years (493.8 parsecs) |
| Position (J2000) | RA 170.4545°, Dec 33.9914° |
| Constellation | Ursa Major |
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| TOI-3877 b | 4.12 days | 0.0529 AU | 11.68 R⊕ | 99.798 M⊕ | Transit, 2025 |
Values are the NASA Exoplanet Archive’s composite parameters. A radius marked estimated comes from a mass–radius relation; a mass marked minimum is M sin i. Planet sizes and colours in the 3D view are renderings: none of these worlds has been photographed as more than a point of light.