Pith Number

pith:DN2A4WNS

pith:2009:DN2A4WNSFDG7BREPB747332UZZ

not attested not anchored not stored refs pending

Updating the orbital ephemeris of Her X-1; rate of decay and eccentricity of the orbit

D. Klochkov, J. Wilms, R. Staubert

arxiv:0904.2307 v1 · 2009-04-15 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DN2A4WNSFDG7BREPB747332UZZ}

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.

Receipt and verification

First computed	2026-05-18T02:14:00.233582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b740e59b228cdf0c48f0ff9fdef54ce6863f332fb24451402624c26cb46f135

Aliases

arxiv: 0904.2307 · arxiv_version: 0904.2307v1 · doi: 10.48550/arxiv.0904.2307 · pith_short_12: DN2A4WNSFDG7 · pith_short_16: DN2A4WNSFDG7BREP · pith_short_8: DN2A4WNS

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/DN2A4WNSFDG7BREPB747332UZZ \
  | 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: 1b740e59b228cdf0c48f0ff9fdef54ce6863f332fb24451402624c26cb46f135

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "65ce697fae5cb956e47de7342540a1ce655abfe13eb1b3f5b89dd287f16ed778",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-04-15T13:12:27Z",
    "title_canon_sha256": "3eb37d2f66960186030038f51f79021dc690353ca12793d7446cbb9624a37f3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2307",
    "kind": "arxiv",
    "version": 1
  }
}