TIC 97739271
Transit candidateRare, already known
Rare & notable finds
Something genuinely unusual turned up. Treat it as a lead: every one of these has ordinary explanations too, listed with each. How these checks work →
Already known: in SIMBAD as TYC 8704-1227-1 (*); catalogued variable star nearby: Gaia DR3 5882563650162625024 (L), 57" away. The rare-find check confirms what is on record - still nice, but not a new discovery.
- Microlensing (rogue planet?) significant
A one-off, symmetric brightening at BTJD 4124.88 that fits the gravitational-lens shape better than a flare (Einstein time 3.0 h). Events this short can be made by a free-floating (rogue) planet passing in front of the star. Very rare in TESS data; scattered light and asteroids can mimic it.
Checked, nothing found (7)
Exocomet-shaped dip · Habitable zone & size · Transit timing (TTV) · Transit duration (TDV) · Changing transit depth · Lopsided transit · Type of star
Checked 2026-10-11 16:35 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)
Notes
Rare, already known: Microlensing (rogue planet?) (in SIMBAD as TYC 8704-1227-1 (*); catalogued variable star nearby: Gaia DR3 5882563650162625024 (L), 57" away).
Found automatically by hunt.py in TESS sector 12 (flagged in 1 sector(s)). Detection score 208.0.
Not in VSX, ASAS-SN or ZTF variable catalogues at the time of the search; Gaia DR3 lists it as a variable-star candidate.
Unchecked by hand yet: verify the period, nearby stars and a wider catalogue search.
Updates:
2026-10-11 Rare-find check: Microlensing (rogue planet?)
2026-10-09 Gaia hints at a hidden companion star (RUWE 1.4)
2026-10-09 Found by the automatic search in TESS sector 12
The signal
| Type | Transit candidate |
| Status | Rare, already known |
| Period (days) | 1.28655 |
| Period source | hunt.py on TESS QLP sector 12 |
| Eclipse / dip depth | 2.5% |
| Amplitude | 3.1% |
| Data used | TESS sector 12 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 477 (~1,554 light years) |
| Temperature (Gaia) | 5,747 K |
| Size (Gaia) | 2.87 x the Sun |
| Mass (Gaia) | 1.49 x the Sun |
| Luminosity (Gaia) | 8.11 x the Sun |
| Colour, Gaia BP-RP | 1.15 |
| RUWE (Gaia) | 1.41 - hints at a hidden companion star |
| Radial velocity (Gaia) | speed changes by 158 km/s - likely an orbiting pair |
| Gaia G mag | 11.44 |
| TESS mag | 10.83 |
Names & neighbours
| TIC ID | 97739271 |
| Gaia DR3 ID | 5882563615837239040 |
| SIMBAD name | TYC 8704-1227-1 [*] |
| Nearest known variable | Gaia DR3 5882563650162625024 (L), 57" away |
| RA (deg) | 234.063 |
| Dec (deg) | -57.9047 |
| Look it up | SIMBAD · VSX · ESASky · ExoFOP |
Record
| Found by | hunt.py (automatic) |
| Date | 2026-10-09 |
| 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 38 KB
- TIC97739271_s0012.fits 82 KB
- TIC97739271_s0012.png 44 KB
- rare_check.json 6 KB
- thumb.png 56 KB
- meta.json
