---
title: "TCP J05074264+2447555 b"
url: "https://spacecatalog.org/object/tcp-j05074264-2447555-b"
release: "DR1"
licence: "No licence stated; acknowledgement requested"
citation: "SpaceCatalog. TCP J05074264+2447555 b [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/tcp-j05074264-2447555-b"
---

# TCP J05074264+2447555 b

TCP J05074264+2447555 b is a Neptune-like [planet](https://spacecatalog.org/planets) in the constellation [Taurus](https://spacecatalog.org/constellation/taurus), 1647 ly from Earth. It orbits TCP J05074264+2447555 at a mean distance of 0.94 AU. It has a mass of 20.00 M⊕ and a radius of 4.72 R⊕ · 30 105 km. It was discovered in 2018.

## At a glance

- **WHAT IT IS:** Neptune-like planet
- **HOW FAR:** 1647 ly — The light arriving now left it that long ago.
- **HOW BIG:** 4.72 R⊕ · 30 105 km — Its radius: half the width across.
- **WHERE TO LOOK:** [Taurus](https://spacecatalog.org/constellation/taurus) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Neptune-like planet |
| MASS | 20.00 M⊕ ±2 |
| RADIUS | 4.72 R⊕ · 30 105 km |
| DISTANCE FROM EARTH | 1647 ly ±153 — by NASA Exoplanet Archive sy\_dist (Fukui+ 2019, 2019AJ....158..206F) |
| ORBITS | TCP J05074264+2447555 |
| SEMI-MAJOR AXIS | 0.94 AU ±0.09 |
| CONSTELLATION | Taurus |
| RIGHT ASCENSION (J2000) | 05h 07m 42.7s |
| DECLINATION (J2000) | +24° 47′ 56.3″ |
| DISCOVERED | 2018 |

## 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 | 344.63 K |
| Host star temperature | 5805 ±122 K |
| Host star mass | 0.586 ±0.033 M☉ |
| Host star radius | 1.42487 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) | 14.24 |

### 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 | TCP J05074264+2447555 |
| 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 | Microlensing |
| Discovered at | Multiple Observatories |

## Also known as

- Exoplanet: TCP J05074264+2447555 b
- Host star: TCP J05074264+2447555

## 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. TCP J05074264+2447555 b \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/tcp-j05074264-2447555-b

```bibtex
@misc{spacecatalog_tcp-j05074264-2447555-b,
  author       = {{SpaceCatalog}},
  title        = {{TCP J05074264+2447555 b}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/tcp-j05074264-2447555-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/tcp-j05074264-2447555-b