TIC 279328387
Single dip / odd eventProbably known
Notes
NOTE: SIMBAD already lists this star (HD 18220) as type SB*, so it may be known after all - check the SIMBAD references.
Found automatically by hunt.py in TESS sector 31 (flagged in 1 sector(s)). Detection score 67.2.
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 4.5)
2026-10-12 Found by the automatic search in TESS sector 31
The signal
| Type | Single dip / odd event |
| Status | Probably known |
| Period source | hunt.py on TESS QLP sector 31 |
| Amplitude | 0.1% |
| Data used | TESS sector 31 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 332 (~1,083 light years) |
| Colour, Gaia BP-RP | 1.35 |
| RUWE (Gaia) | 4.49 - hints at a hidden companion star |
| Radial velocity (Gaia) | speed changes by 63 km/s - likely an orbiting pair |
| Gaia G mag | 7.43 |
| TESS mag | 6.742 |
Names & neighbours
| TIC ID | 279328387 |
| Gaia DR3 ID | 5065286383666887680 |
| SIMBAD name | HD 18220 [SB*] |
| Nearest known variable | Gaia DR3 5065285215437228800 (ROT, P = 6.3127 d), 203" away |
| RA (deg) | 43.6544 |
| Dec (deg) | -29.8428 |
| 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
- TIC279328387_s0031.fits 200 KB
- TIC279328387_s0031.png 62 KB
- thumb.png 101 KB
- meta.json
