---
title: "Kepler-1660 AB b"
url: "https://spacecatalog.org/object/kepler-1660-ab-b"
release: "DR1"
licence: "No licence stated; acknowledgement requested"
citation: "SpaceCatalog. Kepler-1660 AB b [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/kepler-1660-ab-b"
---

# Kepler-1660 AB b

Kepler-1660 AB b is a gas giant in the constellation [Lyra](https://spacecatalog.org/constellation/lyra), 3876 ly from Earth. It orbits Kepler-1660 A at a mean distance of 0.8 AU. It has a mass of 4.99 M♃ and an estimated radius of 1.15 R♃ · 82 277 km. The radius is an estimate from the mass rather than a measurement. It was discovered in 2023.

## At a glance

- **WHAT IT IS:** Gas giant
- **HOW FAR:** 3876 ly — The light arriving now left it that long ago.
- **HOW BIG:** 1.15 R♃ · 82 277 km — Its radius: half the width across.
- **WHERE TO LOOK:** [Lyra](https://spacecatalog.org/constellation/lyra) — The patch of sky it sits in, as seen from Earth.
- **ONE ORBIT TAKES:** 240 days — One trip round Kepler-1660 A.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Gas giant |
| MASS | 4.99 M♃ ±0.23 |
| RADIUS | 1.15 R♃ · 82 277 km — estimated from the mass, not measured |
| DISTANCE FROM EARTH | 3876 ly ±69 — by NASA Exoplanet Archive sy\_dist (TICv8, 2019AJ....158..138S) |
| ORBITS | Kepler-1660 A |
| SEMI-MAJOR AXIS | 0.8 AU |
| CONSTELLATION | Lyra |
| RIGHT ASCENSION (J2000) | 19h 22m 12.5s |
| DECLINATION (J2000) | +40° 14′ 06.2″ |
| DISCOVERED | 2023 |

## Catalogue data

### WHAT KIND OF THING IT IS

What the object is in itself, rather than how it happens to look from here.

| Field | Value |
| --- | --- |
| Equilibrium temperature | 415.08 K |
| Host star spectral type | F7 V |
| Host star temperature | 6305.24 ±74 K |
| Host star mass | 1.1366 ±0.073 M☉ |
| Host star radius | 1.491 ±0.072 R☉ |

### HOW BRIGHT IT IS

What the light adds up to, measured through one filter at a time. A magnitude is a brightness on a backwards scale — the smaller the number, the brighter the object.

| Field | Value |
| --- | --- |
| Host star apparent magnitude (V) | 13.60 |

### THE ORBIT

The shape of the path, where the object sits on it, and the instant those figures were true of. An orbit is a fit to observations and drifts away from the real one either side of its epoch.

| Field | Value |
| --- | --- |
| Host star | Kepler-1660 A |
| Orbital period | 239.5044 days ±0.069 |
| Eccentricity | 0.05541 ±0.0015 |
| Inclination | 86.31 ±4.2° |
| Argument of periastron | −46.17 ±1.9° |
| Periastron epoch | 2454995.7300 BJD |
| Stars in system | 2 |
| Planets in system | 1 |

### WHEN IT WAS FOUND

Who first saw it, from where, and by what method.

| Field | Value |
| --- | --- |
| Discovery method | Eclipse Timing Variations |
| Discovered at | Kepler |

## Also known as

- Exoplanet: Kepler-1660 AB b
- Host star: Kepler-1660 A

## Source

[NASA Exoplanet Archive (Planetary Systems Composite Parameters)](https://exoplanetarchive.ipac.caltech.edu/cgi-bin/TblView/nph-tblView?app=ExoTbls&config=PSCompPars) — No licence stated; acknowledgement requested

The producer asks: 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.

How this was made: https://spacecatalog.org/methods#source-exoplanet-archive

## Cite this page

SpaceCatalog. Kepler-1660 AB b \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/kepler-1660-ab-b

```bibtex
@misc{spacecatalog_kepler-1660-ab-b,
  author       = {{SpaceCatalog}},
  title        = {{Kepler-1660 AB b}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/kepler-1660-ab-b},
  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from NASA Exoplanet Archive (Planetary Systems Composite Parameters).}
}
```

NASA Exoplanet Archive (Planetary Systems Composite Parameters) — No licence stated; acknowledgement requested

Acknowledgement the producer asks for: 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 page itself, with its pictures, the sky map and the observing tools: https://spacecatalog.org/object/kepler-1660-ab-b