TIC 251977663
Single dip / odd eventProbably known
Notes
NOTE: SIMBAD already lists this star (HD 221625) as type SB*, so it may be known after all - check the SIMBAD references.
Found automatically by hunt.py in TESS sector 17 (flagged in 2 sector(s)). Detection score 2143.1.
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:
2026-10-10 Gaia hints at a hidden companion star (RUWE 2.5)
2026-10-10 Found by the automatic search in TESS sector 17
The signal
| Type | Single dip / odd event |
| Status | Probably known |
| Period source | hunt.py on TESS QLP sector 17 |
| Amplitude | 0.1% |
| Data used | TESS sector 17 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 118 (~386 light years) |
| Temperature (Gaia) | 5,702 K |
| Size (Gaia) | 4.22 x the Sun |
| Mass (Gaia) | 1.88 x the Sun |
| Luminosity (Gaia) | 16.95 x the Sun |
| Colour, Gaia BP-RP | 1.01 |
| RUWE (Gaia) | 2.52 - hints at a hidden companion star |
| Gaia G mag | 7.24 |
| TESS mag | 6.695 |
Names & neighbours
| TIC ID | 251977663 |
| Gaia DR3 ID | 1998809751579319552 |
| SIMBAD name | HD 221625 [SB*] |
| Nearest known variable | Gaia DR3 1998797721368283904 (S), 121" away |
| RA (deg) | 353.301 |
| Dec (deg) | 57.4079 |
| Look it up | SIMBAD · VSX · ESASky · ExoFOP |
Record
| Found by | hunt.py (automatic) |
| Date | 2026-10-10 |
| Last update | 2026-10-10 |
Where it sits among the stars
ESA Gaia colour and true brightness. Grey: every Star Log candidate. Orange: this star.
Data files
- TIC251977663_s0017.fits 70 KB
- TIC251977663_s0017.png 28 KB
- thumb.png 20 KB
- meta.json
