TIC 257582255
Single dip / odd eventProbably known
Notes
NOTE: SIMBAD already lists this star (HD 156128) as type SB*, so it may be known after all - check the SIMBAD references.
Found automatically by hunt.py in TESS sector 25 (flagged in 1 sector(s)). Detection score 234.1.
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:
2026-10-11 Gaia hints at a hidden companion star (RUWE 2.7)
2026-10-11 Found by the automatic search in TESS sector 25
The signal
| Type | Single dip / odd event |
| Status | Probably known |
| Period source | hunt.py on TESS QLP sector 25 |
| Amplitude | 0.1% |
| Data used | TESS sector 25 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 138 (~451 light years) |
| Temperature (Gaia) | 7,164 K |
| Size (Gaia) | 2.12 x the Sun |
| Mass (Gaia) | 1.67 x the Sun |
| Luminosity (Gaia) | 10.64 x the Sun |
| Colour, Gaia BP-RP | 0.41 |
| RUWE (Gaia) | 2.74 - hints at a hidden companion star |
| Gaia G mag | 7.87 |
| TESS mag | 7.64 |
Names & neighbours
| TIC ID | 257582255 |
| Gaia DR3 ID | 4568868256801338624 |
| SIMBAD name | HD 156128 [SB*], 1.6" away |
| Nearest known variable | Gaia DR3 4568871520976503680 (ROT), 197" away |
| RA (deg) | 258.7 |
| Dec (deg) | 24.0792 |
| 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
- TIC257582255_s0025.fits 73 KB
- TIC257582255_s0025.png 36 KB
- thumb.png 27 KB
- meta.json
