TIC 257687250
Eclipsing binaryProbably known
Notes
WARNING: same period as the known variable Gaia DR3 4813704344977123328 52" away; the signal is probably its light leaking in.
Found automatically by hunt.py in TESS sector 31 (flagged in 1 sector(s)). Detection score 156.3.
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.
The signal
| Type | Eclipsing binary |
| Status | Probably known |
| Period (days) | 7.65237 |
| Period source | hunt.py on TESS QLP sector 31 |
| Eclipse / dip depth | 68.0% |
| Amplitude | 25.8% |
| Data used | TESS sector 31 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 145 (~474 light years) |
| Temperature (Gaia) | 3,433 K |
| Size (Gaia) | 0.51 x the Sun |
| Luminosity (Gaia) | 0.03 x the Sun |
| Colour, Gaia BP-RP | 2.89 |
| RUWE (Gaia) | 1.02 - fits a single star |
| Gaia G mag | 15.89 |
| TESS mag | 14.59 |
Names & neighbours
| TIC ID | 257687250 |
| Gaia DR3 ID | 4813704310617386368 |
| SIMBAD name | not in SIMBAD |
| Nearest known variable | Gaia DR3 4813704344977123328 (E, P = 7.6546 d), 52" away (same period!) |
| RA (deg) | 74.7361 |
| Dec (deg) | -40.9442 |
| Look it up | SIMBAD · VSX · ESASky · ExoFOP |
Record
| Found by | hunt.py (automatic) |
| Date | 2026-10-12 |
Where it sits among the stars
ESA Gaia colour and true brightness. Grey: every Star Log candidate. Orange: this star.
Data files
- TIC257687250_s0031.fits 200 KB
- TIC257687250_s0031.png 63 KB
- thumb.png 96 KB
- meta.json
