---
title: "V565 Per"
url: "https://spacecatalog.org/object/hd-232733"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. V565 Per [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-232733"
---

# V565 Per

V565 Per is a K2 orange [star](https://spacecatalog.org/stars) in the constellation [Perseus](https://spacecatalog.org/constellation/perseus), 111.6 ly from Earth, shining at apparent magnitude 9.33 (V). Other catalogues list it as HD 232733 and HIP 13785.

## At a glance

- **WHAT IT IS:** Orange star
- **HOW FAR:** 111.6 ly — The light arriving now left it that long ago.
- **HOW BRIGHT (V):** 9.33 — Binoculars reach it; the naked eye does not.
- **WHERE TO LOOK:** [Perseus](https://spacecatalog.org/constellation/perseus) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | K2 orange star |
| MASS | 0.79 M☉ — Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) |
| DISTANCE FROM EARTH | 111.6 ly — by parallax |
| APPARENT MAGNITUDE (V) | 9.33 |
| ABSOLUTE MAGNITUDE (V) | 6.66 |
| CONSTELLATION | Perseus |
| RIGHT ASCENSION (J2000) | 02h 57m 28.5s |
| DECLINATION (J2000) | +52° 28′ 38.1″ |

## 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 | K2 |
| Surface temperature | 4980 K |
| Luminosity | 0.189147 L☉ |
| Luminosity (bolometric) | 0.355 L☉ |
| Radius | 0.801 R☉ |
| Mass | 0.787 M☉ |
| Surface gravity (log g) | 4.516 |
| Age | 1.28×10¹⁰ years |
| Variability | BY Draconis spotted rotating variable |
| Variability type (GCVS) | BY: |

### 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) | 0.809 |
| Variable magnitude, brightest | 9.24 |
| Variable magnitude, faintest | 9.44 |

### 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) | 393.77 mas/yr |
| Proper motion (Dec) | −146.04 mas/yr |
| Radial velocity | 32.3 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 | V565 Per |
| Washington Double Star id | 02575+5229 |

### 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 (1993yCat.3135....0C, quality E) |
| Stellar parameters from | Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) |

## Also known as

- HD: HD 232733
- HIP: HIP 13785
- Variable star: V565 Per

## 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. V565 Per \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-232733

```bibtex
@misc{spacecatalog_hd-232733,
  author       = {{SpaceCatalog}},
  title        = {{V565 Per}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/hd-232733},
  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-232733