Pith Number

pith:OGZY5J7W

pith:2026:OGZY5J7WFZWDVYOIXUKPQQAELN

not attested not anchored not stored refs resolved

A New WZ Sagittae-type Dwarf Nova KSP-OT-202104a Near the Period Minimum from the KMTNet Supernova Program

Dae-Sik Moon, Hong Soo Park, Hyobin Im, Nan Jiang, Sang Chul Kim, Youngdae Lee, Yuan Qi Ni

A new WZ Sagittae-type dwarf nova KSP-OT-202104a shows a superhump period of 71.7 minutes, placing it below the orbital period minimum and on a path toward AM CVn stars.

arxiv:2605.12722 v1 · 2026-05-12 · astro-ph.SR · astro-ph.HE

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\usepackage{pith}
\pithnumber{OGZY5J7WFZWDVYOIXUKPQQAELN}

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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.

Claims

C1strongest claim

we consider that this target would belong to the small sample of DNe below the period minimum and may be evolving toward AM Canum Venaticorum (AM CVn) stars. This system therefore adds an example of a short-period dwarf nova with a low mass-transfer rate to the known sample.

C2weakest assumption

Since the orbital period in WZ Sge-type DNe is typically very close to the superhump period, we consider that this target would belong to the small sample of DNe below the period minimum.

C3one line summary

Discovery of KSP-OT-202104a, a new WZ Sge-type dwarf nova with P_sh ≈ 71.7 min likely below the period minimum and evolving toward AM CVn.

References

110 extracted · 110 resolved · 3 Pith anchors

[1] Afsariardchi, N., Moon, D.-S., Drout, M. R., et al. 2019, ApJ, 881, 22, doi: 10.3847/1538-4357/ab2be6 Astropy Collaboration, Robitaille, T. P., Tollerud, E. J., et al. 2013, A&A, 558, A33, doi: 10.105 2019 · doi:10.3847/1538-4357/ab2be6

[2] 1996, A&A, 311, 889 1996

[3] Augusteijn, T., van Kerkwijk, M. H., & van Paradijs, J. 1993, A&A, 267, L55 1993

[4] T., Breedt, E., et al 2025 · doi:10.1093/mnras/staf173

[5] 2002, PASJ, 54, L7, doi: 10.1093/pasj/54.1.L7 2002 · doi:10.1093/pasj/54.1.l7

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T03:09:49.381009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71b38ea7f62e6c3ae1c8bd14f840045b6bbe31989bf79c47d55c263026ce1bbd

Aliases

arxiv: 2605.12722 · arxiv_version: 2605.12722v1 · doi: 10.48550/arxiv.2605.12722 · pith_short_12: OGZY5J7WFZWD · pith_short_16: OGZY5J7WFZWDVYOI · pith_short_8: OGZY5J7W

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/OGZY5J7WFZWDVYOIXUKPQQAELN \
  | 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: 71b38ea7f62e6c3ae1c8bd14f840045b6bbe31989bf79c47d55c263026ce1bbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "576fab6bc3a893e6a699f9e0e0b370f6babcc461875011a85114d50f82f2680f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-05-12T20:27:51Z",
    "title_canon_sha256": "b4fb7a1ba42a5c348ee18aa518cca83d024fb77035a4790b1b800e6dadfd8eff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12722",
    "kind": "arxiv",
    "version": 1
  }
}