LTT 1445 A is 22.4 light-years from the Sun. The NASA Exoplanet Archive lists 2 planets around this M3.0 star; the first was found in 2019 by transit (Transiting Exoplanet Survey Satellite (TESS)).
Fly there in 3DLTT 1445 A c goes round its star every 3.12 days, 28 times as often as Mercury goes round the Sun.
LTT 1445 A is one of 3 stars in its system: the others are drawn where the Washington Double Star Catalog measures them on the sky.
| Spectral type | M3.0 |
| Surface temperature | 3,562 K |
| Mass | 0.257 solar masses |
| Radius | 0.271 solar radii |
| Luminosity | 0.008997 times the Sun |
| Apparent magnitude | 10.59 |
| Distance from the Sun | 22.4 light-years (6.9 parsecs) |
| Position (J2000) | RA 45.4625°, Dec -16.5945° |
| Constellation | Eridanus |
LTT 1445 C has no spectral type listed of magnitude 12.6, judged a true companion. In 2022 it was 1.3″ from LTT 1445 A, at position angle 318° (Washington Double Star Catalog, 03019-1633 RST2292 AC): 8.9 AU on the sky at this distance. The true distance can only be larger. Its colour is estimated from its brightness.
LTT 1445 B is a M3.5V star of magnitude 11.8, judged a true companion. In 2019 it was 8″ from LTT 1445 A, at position angle 314° (Washington Double Star Catalog, 03019-1633 RST2292 AB): 55.0 AU on the sky at this distance. The true distance can only be larger.
| Planet | Year | Orbit | Radius | Mass | Found |
|---|---|---|---|---|---|
| LTT 1445 A c | 3.12 days | 0.0266 AU | 1.147 R⊕ | 1.54 M⊕ | Transit, 2022 |
| LTT 1445 A b | 5.36 days | 0.0381 AU | 1.34 R⊕ | 2.73 M⊕ | Transit, 2019 |
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.