---
title: "IC 3964"
url: "https://spacecatalog.org/object/ic-3964"
release: "DR1"
licence: "CC-BY-SA-4.0"
citation: "SpaceCatalog. IC 3964 [catalogue entry]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ic-3964"
---

# IC 3964

IC 3964 is a [star](https://spacecatalog.org/stars) in the constellation [Coma Berenices](https://spacecatalog.org/constellation/coma-berenices), shining at apparent magnitude 15.91 (V). Other catalogues list it as 2MASS J12591371+2751032 and SDSS J125913.72+275103.4.

## At a glance

- **WHAT IT IS:** Star
- **HOW BRIGHT (V):** 15.91 — Faint: it takes a large telescope.
- **WHERE TO LOOK:** [Coma Berenices](https://spacecatalog.org/constellation/coma-berenices) — The patch of sky it sits in, as seen from Earth.

## Properties

| Quantity | Value |
| --- | --- |
| CLASS | Star |
| APPARENT MAGNITUDE (V) | 15.91 |
| CONSTELLATION | Coma Berenices |
| RIGHT ASCENSION (J2000) | 12h 59m 13.7s |
| DECLINATION (J2000) | +27° 51′ 03.4″ |

## Catalogue data

### 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 |
| --- | --- |
| Apparent magnitude (B) | 16.52 |
| Apparent magnitude (V) | 15.91 |
| Apparent magnitude (J) | 14.80 |
| Apparent magnitude (H band) | 14.45 |
| Apparent magnitude (K) | 14.46 |

### OTHER NAMES AND NUMBERS

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

| Field | Value |
| --- | --- |
| OpenNGC type code | \* |
| Wikidata item | Q3684538 |

## Also known as

- 2MASS: 2MASS J12591371+2751032
- IC: IC 3964
- SDSS: SDSS J125913.72+275103.4

## Source

[OpenNGC](https://github.com/mattiaverga/OpenNGC) — CC-BY-SA-4.0

The producer asks: OpenNGC, Mattia Verga (github.com/mattiaverga/OpenNGC). Fields derived from it stay under CC BY-SA 4.0.

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

## Cite this page

SpaceCatalog. IC 3964 \[catalogue entry\]. Data release DR1 (2026-08-21). https://spacecatalog.org/object/ic-3964

```bibtex
@misc{spacecatalog_ic-3964,
  author       = {{SpaceCatalog}},
  title        = {{IC 3964}},
  howpublished = {SpaceCatalog, data release DR1 (2026-08-21)},
  year         = {2026},
  url          = {https://spacecatalog.org/object/ic-3964},
  note         = {Catalogue entry, data release DR1 (2026-08-21). Values from OpenNGC.}
}
```

OpenNGC — CC-BY-SA-4.0

Acknowledgement the producer asks for: OpenNGC, Mattia Verga (github.com/mattiaverga/OpenNGC). 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/ic-3964