Pith Number

pith:UBKLBRU3

pith:2009:UBKLBRU3V7C4WNPDRA4DLEYWWL

not attested not anchored not stored refs pending

Parallaxes and proper motions for 20 open clusters as based on the new Hipparcos catalogue

Floor van Leeuwen

arxiv:0902.1039 v1 · 2009-02-06 · astro-ph.GA · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UBKLBRU3V7C4WNPDRA4DLEYWWL}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Astronomical distance scales in the Gaia era

Receipt and verification

First computed	2026-05-18T04:25:51.396460Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a054b0c69bafc5cb35e38838359316b2ca46976074960818e7da05716f89059c

Aliases

arxiv: 0902.1039 · arxiv_version: 0902.1039v1 · doi: 10.48550/arxiv.0902.1039 · pith_short_12: UBKLBRU3V7C4 · pith_short_16: UBKLBRU3V7C4WNPD · pith_short_8: UBKLBRU3

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/UBKLBRU3V7C4WNPDRA4DLEYWWL \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a054b0c69bafc5cb35e38838359316b2ca46976074960818e7da05716f89059c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b7a49802c2f435505f20f32c4c88f45c452568a9d76f60c44128f35c7ff381e",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-02-06T09:51:02Z",
    "title_canon_sha256": "b5fdcdf20a0d787f195bd3f99cb12cbbc0453c1045cdedacd108f0bb1a4609fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.1039",
    "kind": "arxiv",
    "version": 1
  }
}