---
title: "V891 Mon"
url: "https://spacecatalog.org/object/hd-61862"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. V891 Mon [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-61862"
---

# V891 Mon

V891 Mon is a B9.5/A0IV blue-white subgiant in the constellation [Monoceros](https://spacecatalog.org/constellation/monoceros), 1129 ly from Earth, shining at apparent magnitude 8.11 (V). Other catalogues list it as HD 61862 and HIP 37455.

## At a glance

- **WHAT IT IS:** Blue-white subgiant
- **HOW FAR:** 1129 ly — The light arriving now left it that long ago.
- **HOW BRIGHT (V):** 8.11 — Binoculars reach it; the naked eye does not.
- **WHERE TO LOOK:** [Monoceros](https://spacecatalog.org/constellation/monoceros) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | B9.5/A0IV blue-white subgiant |
| DISTANCE FROM EARTH | 1129 ly — by parallax |
| APPARENT MAGNITUDE (V) | 8.11 |
| ABSOLUTE MAGNITUDE (V) | 0.41 |
| CONSTELLATION | Monoceros |
| RIGHT ASCENSION (J2000) | 07h 41m 18.6s |
| DECLINATION (J2000) | −01° 32′ 30.1″ |

## 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 | B9.5/A0IV |
| Luminosity | 59.484 L☉ |
| Variability | Algol-type eclipsing binary |
| Variability type (GCVS) | EA |
| Variability period | 31.4204 days |
| Reference epoch (HJD) | 2448196.0000 |

### 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) | −0.009 |
| Variable magnitude, brightest | 8.10 |
| Variable magnitude, faintest | 8.13 |

### 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) | −0.23 mas/yr |
| Proper motion (Dec) | −0.62 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 | V891 Mon |

### 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 (1999MSS...C05....0H, quality C) |

## Also known as

- HD: HD 61862
- HIP: HIP 37455
- Variable star: V891 Mon

## 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. V891 Mon \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/hd-61862

```bibtex
@misc{spacecatalog_hd-61862,
  author       = {{SpaceCatalog}},
  title        = {{V891 Mon}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/hd-61862},
  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-61862