---
title: "V422 CMa"
url: "https://spacecatalog.org/object/hd-56995"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. V422 CMa [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-56995"
---

# V422 CMa

V422 CMa is a B2IV/V blue-white subgiant in the constellation [Canis Major](https://spacecatalog.org/constellation/canis-major), shining at apparent magnitude 8.91 (V). Other catalogues list it as HD 56995 and HIP 35370.

## At a glance

- **WHAT IT IS:** Blue-white subgiant
- **HOW BRIGHT (V):** 8.91 — Binoculars reach it; the naked eye does not.
- **WHERE TO LOOK:** [Canis Major](https://spacecatalog.org/constellation/canis-major) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | B2IV/V blue-white subgiant |
| MASS | 7.07 M☉ — Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: above 7,500 K GSP-Phot's temperature and extinction are degenerate |
| APPARENT MAGNITUDE (V) | 8.91 |
| CONSTELLATION | Canis Major |
| RIGHT ASCENSION (J2000) | 07h 18m 21.9s |
| DECLINATION (J2000) | −24° 51′ 11.9″ |

## 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 | B2IV/V |
| Surface temperature | 19 513 K |
| Luminosity (bolometric) | 2761.4373 L☉ |
| Radius | 4.858 R☉ |
| Mass | 7.07 M☉ |
| Surface gravity (log g) | 3.922 |
| Variability | Algol-type eclipsing binary |
| Variability type (GCVS) | EA |
| Variability period | 4.19184 days |
| Reference epoch (HJD) | 2451993.4950 |

### 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) | −0.13 |
| Variable magnitude, brightest | 8.87 |
| Variable magnitude, faintest | 8.96 |

### 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) | −2.45 mas/yr |
| Proper motion (Dec) | 2.78 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 | V422 CMa |

### 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 (1988MSS...C04....0H, quality D) |
| Stellar parameters from | Gaia DR3 model fit (GSP-Phot, FLAME; RUWE ≤ 1.4) — low confidence: above 7,500 K GSP-Phot's temperature and extinction are degenerate |

## Also known as

- HD: HD 56995
- HIP: HIP 35370
- Variable star: V422 CMa

## 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. V422 CMa \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-56995

```bibtex
@misc{spacecatalog_hd-56995,
  author       = {{SpaceCatalog}},
  title        = {{V422 CMa}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/hd-56995},
  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-56995