Pith Number

pith:Z3KP5KIL

pith:2008:Z3KP5KIL6XAZTIMU7TZXBJSB67

not attested not anchored not stored refs pending

Direct Detection of the Close Companion of Polaris with the Hubble Space Telescope

Brian D. Mason (U.S. Naval Observatory), Dimitar Sasselov (Harvard University), Edmund Nelan (Space Telescope Science Institute), Gail H. Schaefer, Giuseppe Bono (INAF-Osservatorio Astronomico di Roma), Howard E. Bond (Space Telescope Science Institute), Margarita Karovska (Smithsonian Astrophysical Observatory), Nancy Remage Evans (Smithsonian Astrophysical Observatory)

arxiv:0806.4904 v1 · 2008-06-30 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z3KP5KIL6XAZTIMU7TZXBJSB67}

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

Blue Loops, Cepheids, and Forays into Axions

Receipt and verification

First computed	2026-07-04T17:11:35.401364Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ced4fea90bf5c199a194fcf370a641f7dd6dac764dba0f57c261cdd175c6dc8b

Aliases

arxiv: 0806.4904 · arxiv_version: 0806.4904v1 · doi: 10.48550/arxiv.0806.4904 · pith_short_12: Z3KP5KIL6XAZ · pith_short_16: Z3KP5KIL6XAZTIMU · pith_short_8: Z3KP5KIL

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/Z3KP5KIL6XAZTIMU7TZXBJSB67 \
  | 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: ced4fea90bf5c199a194fcf370a641f7dd6dac764dba0f57c261cdd175c6dc8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05f52864731ea7447449ae082e3f4bf9e9048a564ec2687a0ce3173b95345543",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-06-30T14:35:03Z",
    "title_canon_sha256": "fcf6cf55655b84e1c4a23e82bae53ab7f75167a1c041f9e8e7058d0867dc2cde"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0806.4904",
    "kind": "arxiv",
    "version": 1
  }
}