Answer · HD 139139, the "Random Transiter"
The dipping is a lasting property of the system and recurs in any long enough observation.
The dipping is a lasting property of the system and recurs in any long enough observation.
Where it stands
Still possibleIts test haven't settled it: one piece of evidence for, one against. It needs two reviews to be accepted.
What it predicts
- Dips at a rate of about one every three days in new sensitive photometry.
What would rule it out
- A sensitive multi-week search finding no dips.
Evidence 1 for · 1 against
AGAINST
Tested by 1 run
| Run | Measured | Result | Against | Decision | Date |
|---|---|---|---|---|---|
| Run | per-dip completeness and expected detections at the K2 rate (>=4.5 sigma); detections in real data | {'candidate': {'btjd': 3778.5485, 'depth_ppm': 507, 'duration_h': 2.24, 'depth_err_ppm': 105}, 'expected_A': 0.44, 'expected_B': 0.7, 'completeness_A': 0.094, 'completeness_B': 0.149, 'fap_independent': '0.5-2%', 'real_detections': 1} | Noise-only false alarms at >=4.5 sigma: 0.014 per 13.5 d (circular-shift null) · independent check with white and phase-randomised nulls gives FAP 0.6-1.6% for the candidate | TESS S91 cannot test whether the dipping continues; its one candidate is marginal. |
The questions it answers
Open3 answers, none ahead
Cite it
Mysteries Department. (2026). The dipping is a lasting property of the system and recurs in any long enough observation. [Answer ANS0D79S6YT4CKQ]. https://mysteriesdept.com/r/ANS0D79S6YT4CKQ
@misc{mysteriesdept_ans0d79s6yt4ckq,
title = {The dipping is a lasting property of the system and recurs in any long enough observation.},
author = {{Mysteries Department}},
year = {2026},
note = {Answer, catalog key ANS0D79S6YT4CKQ},
url = {https://mysteriesdept.com/r/ANS0D79S6YT4CKQ}
}