TIC 173038281
Eclipsing binaryProbably known
Notes
NOTE: SIMBAD already lists this star (HD 49816) as type SB*, so it may be known after all - check the SIMBAD references.
Found automatically by hunt.py in TESS sector 33 (flagged in 3 sector(s)). Detection score 255.9.
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.
The signal
| Type | Eclipsing binary |
| Status | Probably known |
| Period (days) | 4.30906 |
| Period source | hunt.py on TESS QLP sector 33 |
| Eclipse / dip depth | 1.4% |
| Amplitude | 0.2% |
| Data used | TESS sector 33 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 207 (~674 light years) |
| Temperature (Gaia) | 6,327 K |
| Size (Gaia) | 1.45 x the Sun |
| Mass (Gaia) | 1.24 x the Sun |
| Luminosity (Gaia) | 3.03 x the Sun |
| Colour, Gaia BP-RP | 0.64 |
| RUWE (Gaia) | 1.03 - fits a single star |
| Radial velocity (Gaia) | speed changes by 65 km/s - likely an orbiting pair |
| Gaia G mag | 10.05 |
| TESS mag | 9.705 |
Names & neighbours
| TIC ID | 173038281 |
| Gaia DR3 ID | 2919220315397004672 |
| SIMBAD name | HD 49816 [SB*] |
| Nearest known variable | Gaia DR3 2919232100787265664 (DSCT|GDOR|SXPHE), 134" away |
| RA (deg) | 102.275 |
| Dec (deg) | -27.3496 |
| Look it up | SIMBAD · VSX · ESASky · ExoFOP |
Record
| Found by | hunt.py (automatic) |
| Date | 2026-10-13 |
Where it sits among the stars
ESA Gaia colour and true brightness. Grey: every Star Log candidate. Orange: this star.
Data files
- TIC173038281_s0033.fits 200 KB
- TIC173038281_s0033.png 53 KB
- thumb.png 58 KB
- meta.json
