TIC 400478544
Eclipsing binaryProbably known
Notes
WARNING: same period as the known variable ASASSN-V J191522.78+174316.5 34" away; the signal is probably its light leaking in.
Found automatically by hunt.py in TESS sector 14 (flagged in 1 sector(s)). Detection score 261.8.
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) | 1.71783 |
| Period source | hunt.py on TESS QLP sector 14 |
| Eclipse / dip depth | 12.5% |
| Amplitude | 14.8% |
| Data used | TESS sector 14 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 746 (~2,434 light years) |
| Temperature (Gaia) | 5,522 K |
| Size (Gaia) | 1.73 x the Sun |
| Mass (Gaia) | 1.03 x the Sun |
| Luminosity (Gaia) | 2.49 x the Sun |
| Colour, Gaia BP-RP | 1.28 |
| RUWE (Gaia) | 1.03 - fits a single star |
| Gaia G mag | 13.82 |
| TESS mag | 13.17 |
Names & neighbours
| TIC ID | 400478544 |
| Gaia DR3 ID | 4515145706372375936 |
| SIMBAD name | not in SIMBAD |
| Nearest known variable | ASASSN-V J191522.78+174316.5 (EA, P = 1.7181 d), 34" away (same period!) |
| RA (deg) | 288.843 |
| Dec (deg) | 17.7307 |
| Look it up | SIMBAD · VSX · ESASky · ExoFOP |
Record
| Found by | hunt.py (automatic) |
| Date | 2026-10-09 |
Where it sits among the stars
ESA Gaia colour and true brightness. Grey: every Star Log candidate. Orange: this star.
Data files
- TIC400478544_s0014.fits 79 KB
- TIC400478544_s0014.png 39 KB
- thumb.png 45 KB
- meta.json
