---
id: "bibcode"
kind: "datatype"
status: "draft"
is_pii: false
categories: ["science", "publishing"]
langs: ["common"]
quality: 100
url: "http://registry.apicrafter.io/datatype/bibcode"
---

# Bibcode (ADS bibliographic code) (`bibcode`)

> **Draft.** Draft records have not been reviewed yet and may be incomplete or wrong; do not treat them as authoritative for legal or compliance decisions.

Nineteen-character identifier of a publication in the NASA Astrophysics Data System (ADS) and other astronomy databases. Its fixed fields are the year (4 digits), the publication code (5 characters), the volume (4), a qualifier (1), the first page (4) and the initial of the first author's surname (1). Periods fill unused positions: 1970ApJ...161L..77K is a 1970 letter (L) in The Astrophysical Journal, volume 161, page 77, by Kemp and others. The qualifier can also hold a Physical Review issue as a lowercase letter, or the letter of an article number. The regexp is adapted from the Wikidata format of property P819, with any letter allowed as the qualifier.

- Personal data (PII): no
- Categories: Scientific (science), Publishing and print (publishing)
- Countries: global
- Languages: Common to most languages (common)
- Classification: identifier

## Detection

Regular expression (Python `re`):

```
^\d{4}[A-Za-z.&]{5}[A-Za-z0-9_.]{4}[A-Za-z.][\d.]{4}[A-Z]$
```

## Examples

- `1970ApJ...161L..77K` — The Astrophysical Journal letter
- `1924MNRAS..84..308E` — Eddington, Monthly Notices of the Royal Astronomical Society
- `1974AJ.....79..819H` — Heintz, The Astronomical Journal
- `1970ApJ..161L..77K` (invalid example) — Eighteen characters

## Mappings

- autotype: `bibcode`
- wikidata: `P819`

## Supported by tools

- `autotype`

## Translations

- ru: Библиографический код ADS (bibcode): Девятнадцатисимвольный идентификатор публикации в астрофизической системе данных NASA (ADS).

## Sources

- wikipedia: <https://en.wikipedia.org/wiki/Bibcode>
- wikidata: <https://www.wikidata.org/wiki/Property:P819>
- doc: <https://ui.adsabs.harvard.edu/help/actions/bibcode>
- other: <https://github.com/congy/AutoType/blob/master/data_release/bibcode.txt>

## Quality

Score 100/100.

JSON: <http://registry.apicrafter.io/api/v1/datatypes/bibcode.json> · Edit: <https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/science/bibcode.yaml>