Confirmation of the April Rho Cygnids (ARC, IAU#348)
Bibliographic record
Abstract
During routine low-light level video observations with CAMS (Cameras for Allsky Meteor Surveillance) in the period April 26 – May 7, we detected the April Rho Cygnids (ARC), a meteor stream discovered by the Canadian Meteor Orbit Radar (CMOR) project in the years 2002 – 2009. The stream is included in the IAU Working list of Meteor Showers as shower #348, awaiting verification. CMOR data show ARC activity from April 25 – May 4, peaking on April 28. We detected this shower on all dates, peaking on April 28 and May 1 in 2011. The orbital parameters we found match the CMOR data. Our mean orbital elements are (N = 29): q = 0.844± 0.034 AU, 1/a = 0.18± 0.10 1/AU, i = 69 . ◦7 ± 2 . ◦8, ω = 130 . ◦4 ± 6 . ◦2, and Ω = 39 . ◦9 ± 2 . ◦9. The parent body of the ARC remains unknown, but from the recent evolution of the stream, we provide a range of possible current orbits.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".