---
title: "V1334 Cyg"
url: "https://spacecatalog.org/object/hd-203156"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. V1334 Cyg [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-203156"
---

# V1334 Cyg

V1334 Cyg is an F1II+B7.0V yellow-white bright giant in the constellation [Cygnus](https://spacecatalog.org/constellation/cygnus), 2160 ly from Earth, shining at apparent magnitude 5.89 (V). Other catalogues list it as HD 203156, HIP 105269 and HR 8157.

## At a glance

- **WHAT IT IS:** Yellow-white bright giant
- **HOW FAR:** 2160 ly — The light arriving now left it that long ago.
- **HOW BRIGHT (V):** 5.89 — Bright enough for the naked eye, under a sky dark enough.
- **WHERE TO LOOK:** [Cygnus](https://spacecatalog.org/constellation/cygnus) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | F1II+B7.0V yellow-white bright giant |
| DISTANCE FROM EARTH | 2160 ly +701 / −425 — by parallax |
| APPARENT MAGNITUDE (V) | 5.89 |
| ABSOLUTE MAGNITUDE (V) | −3.21 |
| CONSTELLATION | Cygnus |
| RIGHT ASCENSION (J2000) | 21h 19m 22.2s |
| DECLINATION (J2000) | +38° 14′ 14.9″ |

## 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 | F1II+B7.0V |
| Surface temperature | 6386 K |
| Luminosity (visual) | 1682.67 L☉ |
| Surface gravity (log g) | 2.19 |
| Metallicity (\[Fe/H\]) | 0.01 ±0.075 |
| Variability | Classical Cepheid (low amplitude) |
| Variability type (GCVS) | DCEPS |
| Variability period | 3.332816 days |
| Reference epoch (HJD) | 2440124.5330 |

### 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) | 0.505 |
| Variable magnitude, brightest | 5.79 |
| Variable magnitude, faintest | 5.94 |

### 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) | −0.18 mas/yr |
| Proper motion (Dec) | −3.33 mas/yr |
| Radial velocity | 8 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 | V1334 Cyg |
| Washington Double Star id | 21194+3814 |

### 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 (2015MNRAS.448.3567K, quality C) |
| Stellar parameters from | Spectroscopic determinations compiled from the literature (PASTEL, Soubiran+ 2016) |
| Metallicity from | Median of 3 spectroscopic determinations in 2 papers, compiled from the literature (PASTEL, Soubiran+ 2016); the error bar is the scatter between them |

## Also known as

- HD: HD 203156
- HIP: HIP 105269
- HR: HR 8157
- Variable star: V1334 Cyg

## 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. V1334 Cyg \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-203156

```bibtex
@misc{spacecatalog_hd-203156,
  author       = {{SpaceCatalog}},
  title        = {{V1334 Cyg}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/hd-203156},
  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-203156