TIC 8746787
Eclipsing binaryNotable, already known
Rare & notable finds
A notable find: not unheard of, but the kind of system astronomers are glad to have more of. How these checks work →
Already known: in SIMBAD as UCAC4 605-045794 (*). The rare-find check confirms what is on record - still nice, but not a new discovery.
- Superflare notable
A flare releasing roughly 1.5e+35 erg (rough, from TESS's band) on a Sun-like star - a 'superflare', more than 10x the biggest flare ever seen on the Sun.
Checked, nothing found (7)
Microlensing (rogue planet?) · Exocomet-shaped dip · Eclipse timing (third body?) · Eccentric eclipsing binary · Pulsating star in an eclipsing binary · Extra dips outside the eclipses · Type of star
Checked 2026-10-11 23:45 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)
Notes
Notable, already known: Superflare (in SIMBAD as UCAC4 605-045794 (*)).
Found automatically by hunt.py in TESS sector 21 (flagged in 1 sector(s)). Detection score 930.3.
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:
2026-10-11 Rare-find check: Superflare
2026-10-11 Gaia hints at a hidden companion star (RUWE 4.9)
2026-10-11 Found by the automatic search in TESS sector 21
The signal
| Type | Eclipsing binary |
| Status | Notable, already known |
| Period (days) | 2.01668 |
| Period source | hunt.py on TESS QLP sector 21 |
| Eclipse / dip depth | 13.5% |
| Amplitude | 3.0% |
| Data used | TESS sector 21 (QLP) |
The star (Gaia & TESS)
| Distance (pc) | 206 (~673 light years) |
| Temperature (Gaia) | 5,023 K |
| Size (Gaia) | 0.99 x the Sun |
| Luminosity (Gaia) | 0.53 x the Sun |
| Colour, Gaia BP-RP | 1.07 |
| RUWE (Gaia) | 4.86 - hints at a hidden companion star |
| Radial velocity (Gaia) | speed changes by 104 km/s - likely an orbiting pair |
| Gaia G mag | 12.08 |
| TESS mag | 11.53 |
Names & neighbours
| TIC ID | 8746787 |
| Gaia DR3 ID | 700611115617991040 |
| SIMBAD name | UCAC4 605-045794 [*] |
| Nearest known variable | none within 5' |
| RA (deg) | 139.832 |
| Dec (deg) | 30.9909 |
| Look it up | SIMBAD · VSX · ESASky · ExoFOP |
Record
| Found by | hunt.py (automatic) |
| Date | 2026-10-11 |
| Last update | 2026-10-11 |
Where it sits among the stars
ESA Gaia colour and true brightness. Grey: every Star Log candidate. Orange: this star.
Data files
- 10_rare_check.png 26 KB
- TIC8746787_s0021.fits 79 KB
- TIC8746787_s0021.png 37 KB
- rare_check.json 4 KB
- thumb.png 32 KB
- meta.json
