TIC 389374320
Eclipsing binaryProbably known
Notes
WARNING: same period as the known variable UY Mic 38" away; the signal is probably its light leaking in.
Found automatically by hunt.py in TESS sector 27 (flagged in 2 sector(s)). Detection score 236.9.
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 5.0)
2026-10-12 Found by the automatic search in TESS sector 27
The signal
| Type | Eclipsing binary |
| Status | Probably known |
| Period (days) | 0.404626 |
| Period source | hunt.py on TESS QLP sector 27 |
| Eclipse / dip depth | 7.6% |
| Amplitude | 13.9% |
| Data used | TESS sector 27 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 1,293 (~4,219 light years) |
| Temperature (Gaia) | 5,495 K |
| Size (Gaia) | 2.64 x the Sun |
| Mass (Gaia) | 1.35 x the Sun |
| Luminosity (Gaia) | 5.72 x the Sun |
| Colour, Gaia BP-RP | 1.04 |
| RUWE (Gaia) | 5.01 - hints at a hidden companion star |
| Gaia G mag | 13.54 |
| TESS mag | 12.97 |
Names & neighbours
| TIC ID | 389374320 |
| Gaia DR3 ID | 6681878985455086592 |
| SIMBAD name | not in SIMBAD |
| Nearest known variable | UY Mic (EW, P = 0.40462 d), 38" away (same period!) |
| RA (deg) | 311.234 |
| Dec (deg) | -38.6502 |
| 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
- TIC389374320_s0027.fits 194 KB
- TIC389374320_s0027.png 73 KB
- thumb.png 102 KB
- meta.json
