---
title: "HIP 57274 b"
url: "https://spacecatalog.org/object/hip-57274-b"
release: "DR1"
licence: "No licence stated; acknowledgement requested"
citation: "SpaceCatalog. HIP 57274 b [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hip-57274-b"
---

# HIP 57274 b

HIP 57274 b is a gas giant in the constellation [Ursa Major](https://spacecatalog.org/constellation/ursa-major), 84.35 ly from Earth. It orbits HIP 57274 at a mean distance of 0.07 AU. Its mass is 10.57 M♃. It was discovered in 2011.

## At a glance

- **WHAT IT IS:** Gas giant
- **HOW FAR:** 84.35 ly — The light arriving now left it that long ago.
- **WHERE TO LOOK:** [Ursa Major](https://spacecatalog.org/constellation/ursa-major) — The patch of sky it sits in, as seen from Earth.
- **ONE ORBIT TAKES:** 8.14 days — One trip round HIP 57274.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Gas giant |
| MASS | 10.57 M♃ |
| DISTANCE FROM EARTH | 84.35 ly ±0.11 — by NASA Exoplanet Archive sy\_dist (TICv8, 2019AJ....158..138S) |
| ORBITS | HIP 57274 |
| SEMI-MAJOR AXIS | 0.07 AU |
| CONSTELLATION | Ursa Major |
| RIGHT ASCENSION (J2000) | 11h 44m 40.9s |
| DECLINATION (J2000) | +30° 57′ 27.5″ |
| DISCOVERED | 2011 |

## 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 | 725.95 K |
| Host star spectral type | K4 V |
| Host star temperature | 4510 ±136 K |
| Host star mass | 0.29 ±0.3 M☉ |
| Host star radius | 0.78 ±0.05 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) | 8.97 |

### 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 | HIP 57274 |
| Orbital period | 8.1352 days ±0.004 |
| Eccentricity | 0.19 ±0.1 |
| Inclination | 0.2° |
| Argument of periastron | 81 ±59° |
| Periastron epoch | 2454801.0150 BJD |
| Transit midpoint | 2455801.7790 BJD |
| Stars in system | 1 |
| Planets in system | 3 |

### WHEN IT WAS FOUND

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

| Field | Value |
| --- | --- |
| Discovery method | Radial Velocity |
| Discovered at | W. M. Keck Observatory |

## Also known as

- Exoplanet: HIP 57274 b
- Host star: HIP 57274

## 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. HIP 57274 b \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hip-57274-b

```bibtex
@misc{spacecatalog_hip-57274-b,
  author       = {{SpaceCatalog}},
  title        = {{HIP 57274 b}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/hip-57274-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/hip-57274-b