Pith Number

pith:ODLDJBNJ

pith:2026:ODLDJBNJWRJE4B5BXBVEZR2M57

not attested not anchored not stored refs resolved

A Revised Mass and Period for the Habitable Zone super-Earth GJ 3378b: A Planet Straddling the Cosmic Shoreline

Arpita Roy, Arvind F. Gupta, Caleb I. Ca\~nas, Chad F. Bender, Christian Schwab, Claire J. Rogers, Daniel M. Krolikowski, Gogod James, Gudmundur Stef\'ansson, Joe P. Ninan, Mark R. Giovinazzi, Michael Endl, Paul Robertson, Roan Arendtsz, Ryan C. Terrien, Samuel Halverson, Sarah E. Logsdon, Scott A. Diddams, Shubham Kanodia, Suvrath Mahadevan, William D. Cochran

Joint radial velocity analysis revises the super-Earth GJ 3378b to an orbital period of 21.45 days and a minimum mass of 2.3 Earth masses while keeping it inside the habitable zone.

arxiv:2605.16499 v1 · 2026-05-15 · astro-ph.EP

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\pithnumber{ODLDJBNJWRJE4B5BXBVEZR2M57}

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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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

The joint RV model reduces the orbital period to P = 21.45 ± 0.01 d and the minimum mass to m sin i = 2.3 ± 0.4 M⊕. The shortened orbital distance remains within the conservative circumstellar liquid-water habitable zone, while the reduced mass increases the likelihood that the planet has a terrestrial composition.

C2weakest assumption

That the combined HPF+NEID+CARMENES+SPIRou radial-velocity time series contain no significant stellar-activity signals or instrumental systematics capable of mimicking or shifting the 21.45-day Keplerian signature (implicit in the joint orbital fit described in the abstract).

C3one line summary

Joint radial-velocity analysis revises GJ 3378b's period to 21.45 days and minimum mass to 2.3 Earth masses, placing the habitable-zone planet near the cosmic shoreline.

References

98 extracted · 98 resolved · 7 Pith anchors

[1] IEEE Transactions on Pattern Analysis and Machine Intelligence , keywords = 2015 · doi:10.1109/tpami.2015.2448083

[2] Estimating distances from parallaxes. V: Geometric and photogeometric distances to 1.47 billion stars in Gaia Early Data Release 3 2021 · doi:10.3847/1538-3881/abd806

[3] 1996, A&AS, 119, 373 1996

[4] S., Mart \'i n, E 2005 · doi:10.1111/j.1745-3933.2005.08587.x

[5] Basant, R., Luque, R., Bean, J. L., et al. 2025, ApJL, 982, L1, doi: 10.3847/2041-8213/adb8d5 2025 · doi:10.3847/2041-8213/adb8d5

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:02:25.932197Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70d63485a9b4524e07a1b86a4cc74cefd028e20def888bbe9e22ff480ea6732b

Aliases

arxiv: 2605.16499 · arxiv_version: 2605.16499v1 · doi: 10.48550/arxiv.2605.16499 · pith_short_12: ODLDJBNJWRJE · pith_short_16: ODLDJBNJWRJE4B5B · pith_short_8: ODLDJBNJ

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/ODLDJBNJWRJE4B5BXBVEZR2M57 \
  | 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: 70d63485a9b4524e07a1b86a4cc74cefd028e20def888bbe9e22ff480ea6732b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33bce8bdb3a4876e43a83f46843307b931b20a177ac96d76caa83b2c27c4520c",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2026-05-15T18:00:14Z",
    "title_canon_sha256": "044a8058340fba3317a8a1fc34d162ab7bed406895649139b84a27b5e9cb13b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.16499",
    "kind": "arxiv",
    "version": 1
  }
}