TIC 389567330
Eclipsing binaryProbably known
Notes
WARNING: same period as the known variable ASASSN-V J054623.23-655757.6 62" away; the signal is probably its light leaking in.
NOTE: SIMBAD already lists this star (HD 271537) as type SB*, so it may be known after all - check the SIMBAD references.
Found automatically by hunt.py in TESS sector 28 (flagged in 13 sector(s)). Detection score 107.7.
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) | 0.427602 |
| Period source | hunt.py on TESS QLP sector 28 |
| Eclipse / dip depth | 0.4% |
| Amplitude | 0.7% |
| Data used | TESS sector 28 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 320 (~1,045 light years) |
| Temperature (Gaia) | 6,514 K |
| Size (Gaia) | 1.52 x the Sun |
| Mass (Gaia) | 1.31 x the Sun |
| Luminosity (Gaia) | 3.76 x the Sun |
| Colour, Gaia BP-RP | 0.57 |
| RUWE (Gaia) | 1.02 - fits a single star |
| Radial velocity (Gaia) | speed changes by 23 km/s - likely an orbiting pair |
| Gaia G mag | 10.74 |
| TESS mag | 10.44 |
Names & neighbours
| TIC ID | 389567330 |
| Gaia DR3 ID | 4659975851879187840 |
| SIMBAD name | HD 271537 [SB*] |
| Nearest known variable | ASASSN-V J054623.23-655757.6 (EW, P = 0.42755 d), 62" away (same period!) |
| RA (deg) | 86.5583 |
| Dec (deg) | -65.9592 |
| 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
- TIC389567330_s0028.fits 200 KB
- TIC389567330_s0028.png 77 KB
- thumb.png 136 KB
- meta.json
