---
title: "The KMT-2021-BLG-1077L system"
url: "https://spacecatalog.org/system/kmt-2021-blg-1077l"
release: "DR1"
licence: "No licence stated; acknowledgement requested"
citation: "This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Cite Christiansen et al. (2025), Planetary Science Journal (doi:10.3847/PSJ/ade3c2), and the literature reference given with each value."
---

# The KMT-2021-BLG-1077L system

KMT-2021-BLG-1077L is an M V red dwarf in Scorpius, 26 875 ly away, with 2 known planets. Their orbits run from 0.930 to 1.26 AU. All of them were detected by microlensing.

## The planets, innermost first

| Planet | Orbit (AU) | Period | Radius | Mass | Equilibrium T |
| --- | --- | --- | --- | --- | --- |
| [c](https://spacecatalog.org/object/kmt-2021-blg-1077l-c) | 0.930 | — | 10.60 R⊕ | 79.5 M⊕ | — |
| [b](https://spacecatalog.org/object/kmt-2021-blg-1077l-b) | 1.26 | — | 9.86 R⊕ | 69.9 M⊕ | — |

Every figure is the planet's composite parameter from the [NASA Exoplanet Archive (Planetary Systems Composite Parameters)](https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PSCompPars), one consistent set per world. Semi-major axes are orbits about the star, not distances from Earth.

This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program. Cite Christiansen et al. (2025), Planetary Science Journal (doi:10.3847/PSJ/ade3c2), and the literature reference given with each value.

## The host star

| Quantity | Value |
| --- | --- |
| CLASS | M V red dwarf |
| SPECTRAL TYPE | M V |
| MASS | 0.14 M☉ |
| DISTANCE FROM EARTH | 26 875 ly |
| CONSTELLATION | Scorpius |
| STARS IN SYSTEM | 1 |

The star itself: https://spacecatalog.org/object/kmt-2021-blg-1077l

The page itself, with the orbits drawn: https://spacecatalog.org/system/kmt-2021-blg-1077l