TIC 232646839
Transit candidateRare, already known
Rare & notable finds
Something unusual, worth a look - less certain than a significant find. How these checks work →
Already known: catalogued variable star nearby: PS1-3PI J184544.96+593638.7 (RRAB, P = 0.57975 d), 185" away. The rare-find check confirms what is on record - still nice, but not a new discovery.
- Hot Neptune desert notable
A 4.0 Earth-radius planet on a 1.86-day orbit sits in the 'hot Neptune desert', where very few planets are known (if the signal is a real planet - it hasn't passed the planet check). - Transit timing (TTV) hint
The transits arrive early or late by 26.0 min (typical error 4.0 min): something is tugging on the planet - another planet, or a moon. - Transit duration (TDV) hint
The transit length changes from one transit to the next beyond the errors - a sign of a wobbling orbit (moon) or a precessing orbit. - Changing transit depth hint
The dip depth changes by 982% between transits - a disintegrating planet trailing dust, starspots, or light from another star mixing in.
Checked, nothing found (7)
Microlensing (rogue planet?) · Exocomet-shaped dip · Habitable zone & size · Exomoon timing pattern · Lopsided transit · Self-lensing binary · Type of star
Checked 2026-10-11 16:53 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)
Notes
Probably noise or an instrument effect.
Rare, already known: Hot Neptune desert; Transit timing (TTV); Transit duration (TDV) (catalogued variable star nearby: PS1-3PI J184544.96+593638.7 (RRAB, P = 0.57975 d), 185" away).
Found automatically by hunt.py in TESS sector 21 (flagged in 1 sector(s)). Detection score 107.2.
Not in VSX, ASAS-SN or ZTF variable catalogues at the time of the search; not in Gaia DR3's variable lists.
Unchecked by hand yet: verify the period, nearby stars and a wider catalogue search.
Updates:
2026-10-11 Planet check: Probably noise or an instrument effect
2026-10-11 Rare-find check: Transit timing (TTV); Transit duration (TDV); Changing transit depth
2026-10-11 Found by the automatic search in TESS sector 21
The signal
| Type | Transit candidate |
| Status | Rare, already known |
| Period (days) | 1.85364 |
| Period source | hunt.py on TESS QLP sector 21 |
| Eclipse / dip depth | 4.0% |
| Amplitude | 4.7% |
| Data used | TESS sector 21 (QLP) |
Planet check
| Verdict | Probably noise or an instrument effect |
| Size if it's a planet | ~5.0 Earth radii (~0.44 Jupiter) |
The star (Gaia & TESS)
| Distance (pc) | 634 (~2,067 light years) |
| Temperature (Gaia) | 5,567 K |
| Size (Gaia) | 0.96 x the Sun |
| Mass (Gaia) | 0.92 x the Sun |
| Luminosity (Gaia) | 0.80 x the Sun |
| Colour, Gaia BP-RP | 0.88 |
| RUWE (Gaia) | 0.94 - fits a single star |
| Gaia G mag | 13.95 |
| TESS mag | 13.5 |
Names & neighbours
| TIC ID | 232646839 |
| Gaia DR3 ID | 2156176837903282688 |
| SIMBAD name | not in SIMBAD |
| Nearest known variable | PS1-3PI J184544.96+593638.7 (RRAB, P = 0.57975 d), 185" away |
| RA (deg) | 281.539 |
| Dec (deg) | 59.6138 |
| Look it up | SIMBAD · VSX · ESASky · ExoFOP |
Record
| Found by | hunt.py (automatic) |
| Date | 2026-10-11 |
| Last update | 2026-10-11 |
Where it sits among the stars
ESA Gaia colour and true brightness. Grey: every Star Log candidate. Orange: this star.
Data files
- 10_rare_check.png 25 KB
- 5_planet_check.png 117 KB
- TIC232646839_s0021.fits 79 KB
- TIC232646839_s0021.png 45 KB
- lightcurve_all_sectors.csv 560 KB
- planet_check.json 4 KB
- rare_check.json 5 KB
- thumb.png 59 KB
- meta.json
