EPN-TAP Proposed Recommendation: Request for Comments

EPN-TAP is a protocol used to describe and access data related to the study of the Solar System.

This document defines the EPN-TAP framework, which is using TAP with the EPNcore meta- data dictionary. The EPNcore metadata dictionary defines the core components that are necessary to perform data discovery in the Solar System related science fields. It includes keywords to describe data products coverage (temporal, spectral, spatial, photometric), origin (instrument, facility), content (target, physical parameters), access, references, etc. Its implementation with TAP (Table Access Protocol) is presented, including service registration guidelines. Topical extension metadata dictionaries are also presented.

Latest version of EPN-TAP can be found at:

Reference Interoperable Implementations

(Indicate here the links to at least two Reference Interoperable Implementations)


=> select * from bass2000.epn_core


=> select * from spicam.epn_core


=> select * from mpc.epn_core

Implementations Validators

taplint from STILTS versions >=3.4-2 checks all column metadata and content constraints:

   java -jar stilts.jar taplint tapurl=http://dc.g-vo.org/tap stages='tme epn'

Comments from the IVOA Community during RFC/TCG review period: 2021-09-30 - 2021-11-14

The comments from the TCG members during the RFC/TCG review should be included in the next section.

In order to add a comment to the document, please edit this page and add your comment to the list below in the format used for the example (include your Wiki Name so that authors can contact you for further information). When the author(s) of the document have considered the comment, they will provide a response after the comment.

Additional discussion about any of the comments or responses can be conducted on the WG mailing list. However, please be sure to enter your initial comments here for full consideration in any future revisions of this document

Comments from TCG member during the RFC/TCG Review Period: 2021-09-30 - 2021-11-14

WG chairs or vice chairs must read the Document, provide comments if any (including on topics not directly linked to the Group matters) or indicate that they have no comment.

IG chairs or vice chairs are also encouraged to do the same, althought their inputs are not compulsory.

TCG Chair & Vice Chair

Applications Working Group

Data Access Layer Working Group

Data Model Working Group

Grid & Web Services Working Group

Registry Working Group

Semantics Working Group

Data Curation & Preservation Interest Group

Education Interest Group

Knowledge Discovery Interest Group

Operations Interest Group

As one of the document authors, I am basically happy with the text. But before recommending acceptance, I would like to see one EPN-TAP service that passes all validation checks. -- MarkTaylor - 2021-10-04

Radio Astronomy Interest Group

Solar System Interest Group

Theory Interest Group

Time Domain Interest Group

Standards and Processes Committee

TCG Vote : 2021-09-30 - 2021-11-14

If you have minor comments (typos) on the last version of the document please indicate it in the Comments column of the table and post them in the TCG comments section above with the date.

Group Yes No Abstain Comments

Topic revision: r9 - 2021-10-15 - MarkTaylor
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