Kojima-1Lb
Kojima-1Lb (TCP J05074264+2447555) is an exoplanet discovered through the microlensing method. The host star lens was discovered by the amateur astronomer Tadashi Kojima (小嶋正). At the time of its discovery it was the planet around the brightest microlensing host star and consequently around a nearby star, as opposed to most of the microlensing planets, which are usually found around distant and inaccessible host stars. Kojima-1Lb is a mildly cold Neptune around a red dwarf located 429±21 pc from the solar system.
| Discovery | |
|---|---|
| Discovery date | 2018 |
| microlensing method | |
| Designations | |
| TCP J05074264+2447555 | |
| Orbital characteristics | |
| 1.08+0.62 −0.18 AU | |
| Physical characteristics | |
| Mass | 20±2 M🜨 |
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