---
title: "V418 Peg"
url: "https://spacecatalog.org/object/hd-221866"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. V418 Peg [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-221866"
---

# V418 Peg

V418 Peg is an A3m white [star](https://spacecatalog.org/stars) in the constellation [Pegasus](https://spacecatalog.org/constellation/pegasus), 435.5 ly from Earth, shining at apparent magnitude 7.46 (V). Other catalogues list it as HD 221866 and HIP 116434.

## At a glance

- **WHAT IT IS:** White star
- **HOW FAR:** 435.5 ly — The light arriving now left it that long ago.
- **HOW BRIGHT (V):** 7.46 — Binoculars reach it; the naked eye does not.
- **WHERE TO LOOK:** [Pegasus](https://spacecatalog.org/constellation/pegasus) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | A3m white star |
| MASS | 1.78 M☉ — Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: Gaia's classifier calls the source a binary, which GSP-Phot fitted as one star |
| DISTANCE FROM EARTH | 435.5 ly — by parallax |
| APPARENT MAGNITUDE (V) | 7.46 |
| ABSOLUTE MAGNITUDE (V) | 1.83 |
| CONSTELLATION | Pegasus |
| RIGHT ASCENSION (J2000) | 23h 35m 37.5s |
| DECLINATION (J2000) | +14° 35′ 37.2″ |

## 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 |
| --- | --- |
| Spectral type | A3m |
| Surface temperature | 7332 K |
| Luminosity | 16.1139 L☉ |
| Luminosity (bolometric) | 14.1881 L☉ |
| Radius | 2.401 R☉ |
| Mass | 1.775 M☉ |
| Surface gravity (log g) | 3.825 |
| Age | 1.17×10⁹ years |
| Variability | Gamma Doradus pulsator |
| Variability type (GCVS) | GDOR |
| Variability period | 1.1417 days |

### 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 |
| --- | --- |
| Colour index (B−V) | 0.286 |
| Variable magnitude, brightest | 7.42 |
| Variable magnitude, faintest | 7.48 |

### WHERE IT IS AND HOW IT MOVES

Position, motion across the sky and the size it covers on it. These are measurements of the object as seen from here, so every one of them depends on where here is.

| Field | Value |
| --- | --- |
| Proper motion (RA) | 53.92 mas/yr |
| Proper motion (Dec) | −0.67 mas/yr |
| Radial velocity | 0 km/s |

### OTHER NAMES AND NUMBERS

The identifiers other catalogues file this object under, for anyone joining this data to theirs.

| Field | Value |
| --- | --- |
| Variable-star designation | V418 Peg |

### WHERE THESE FIGURES CAME FROM

Which catalogue, paper or model each of the fields above was read from, where the source named one.

| Field | Value |
| --- | --- |
| Spectral type from | SIMBAD (quality D) |
| Stellar parameters from | Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: Gaia's classifier calls the source a binary, which GSP-Phot fitted as one star |

## Also known as

- HD: HD 221866
- HIP: HIP 116434
- Variable star: V418 Peg

## Source

[HYG Database v4.1](https://github.com/astronexus/HYG-Database) — CC-BY-SA-4.0

The producer asks: HYG Database v4.1, Astronexus (github.com/astronexus/HYG-Database). Fields derived from it stay under CC BY-SA 4.0.

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

## Cite this page

SpaceCatalog. V418 Peg \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-221866

```bibtex
@misc{spacecatalog_hd-221866,
  author       = {{SpaceCatalog}},
  title        = {{V418 Peg}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/hd-221866},
  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from HYG Database v4.1.}
}
```

HYG Database v4.1 — CC-BY-SA-4.0

Acknowledgement the producer asks for: HYG Database v4.1, Astronexus (github.com/astronexus/HYG-Database). Fields derived from it stay under CC BY-SA 4.0.

The page itself, with its pictures, the sky map and the observing tools: https://spacecatalog.org/object/hd-221866