---
title: "TIC 290487717 b"
url: "https://spacecatalog.org/object/tic-290487717-b"
release: "DR1"
licence: "No licence stated; acknowledgement requested"
citation: "SpaceCatalog. TIC 290487717 b [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/tic-290487717-b"
---

# TIC 290487717 b

TIC 290487717 b is a gas giant in the constellation [Hydra](https://spacecatalog.org/constellation/hydra), 1290 ly from Earth. It has an estimated mass of 0.11 M♃ and a radius of 0.59 R♃ · 42 336 km. The mass is an estimate from the radius rather than a measurement. It was discovered in 2026.

## At a glance

- **WHAT IT IS:** Gas giant
- **HOW FAR:** 1290 ly — The light arriving now left it that long ago.
- **HOW BIG:** 0.59 R♃ · 42 336 km — Its radius: half the width across.
- **WHERE TO LOOK:** [Hydra](https://spacecatalog.org/constellation/hydra) — The patch of sky it sits in, as seen from Earth.
- **ONE ORBIT TAKES:** 3.4 days — One trip round TIC 290487717.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Gas giant |
| MASS | 0.11 M♃ — estimated from the radius, not measured |
| RADIUS | 0.59 R♃ · 42 336 km +4726 / −3872 |
| DISTANCE FROM EARTH | 1290 ly ±11 — by NASA Exoplanet Archive sy\_dist (TICv8, 2019AJ....158..138S) |
| ORBITS | TIC 290487717 |
| CONSTELLATION | Hydra |
| RIGHT ASCENSION (J2000) | 09h 16m 20.9s |
| DECLINATION (J2000) | +02° 33′ 02.9″ |
| DISCOVERED | 2026 |

## 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 |
| --- | --- |
| Host star temperature | 5328.97 K |
| Host star mass | 0.92 +0.11 / −0.12 M☉ |
| Host star radius | 0.943767 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) | 13.49 |

### 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 | TIC 290487717 |
| Orbital period | 3.40082 days +0.0012 / −0.0014 |
| Inclination | 84.39 +3.5 / −3.8° |
| Transit midpoint | 2458526.6994 BJD |
| Stars in system | 1 |
| Planets in system | 1 |

### WHEN IT WAS FOUND

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

| Field | Value |
| --- | --- |
| Discovery method | Transit |
| Discovered at | Transiting Exoplanet Survey Satellite (TESS) |

## Also known as

- Exoplanet: TIC 290487717 b
- Host star: TIC 290487717

## 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. TIC 290487717 b \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/tic-290487717-b

```bibtex
@misc{spacecatalog_tic-290487717-b,
  author       = {{SpaceCatalog}},
  title        = {{TIC 290487717 b}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/tic-290487717-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/tic-290487717-b