TIC 178275177
Eclipsing binaryProbably known
Notes
WARNING: same period as the known variable CSS_J040036.3-190207 38" away; the signal is probably its light leaking in.
Found automatically by hunt.py in TESS sector 31 (flagged in 3 sector(s)). Detection score 443.3.
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.
Updates:
2026-10-12 Gaia hints at a hidden companion star (RUWE 2.6)
2026-10-12 Found by the automatic search in TESS sector 31
The signal
| Type | Eclipsing binary |
| Status | Probably known |
| Period (days) | 0.388697 |
| Period source | hunt.py on TESS QLP sector 31 |
| Eclipse / dip depth | 8.9% |
| Amplitude | 15.9% |
| Data used | TESS sector 31 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 357 (~1,164 light years) |
| Temperature (Gaia) | 4,451 K |
| Size (Gaia) | 0.97 x the Sun |
| Luminosity (Gaia) | 0.33 x the Sun |
| Colour, Gaia BP-RP | 1.53 |
| RUWE (Gaia) | 2.60 - hints at a hidden companion star |
| Gaia G mag | 14.12 |
| TESS mag | 13.36 |
Names & neighbours
| TIC ID | 178275177 |
| Gaia DR3 ID | 5094628500721534720 |
| SIMBAD name | UCAC4 355-004622 [Y*?] |
| Nearest known variable | CSS_J040036.3-190207 (EW, P = 0.38866 d), 38" away (same period!) |
| RA (deg) | 60.1447 |
| Dec (deg) | -19.0438 |
| Look it up | SIMBAD · VSX · ESASky · ExoFOP |
Record
| Found by | hunt.py (automatic) |
| Date | 2026-10-12 |
| Last update | 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
- TIC178275177_s0031.fits 200 KB
- TIC178275177_s0031.png 74 KB
- thumb.png 72 KB
- meta.json
