TIC 406634453

Eclipsing binaryRare, already known

Rare & notable finds

Something unusual, worth a look - less certain than a significant find. How these checks work →

Already known: catalogued variable star nearby: ASASSN-V J234049.79+700531.0 (L), 87" away. The rare-find check confirms what is on record - still nice, but not a new discovery.

Extra dips outside the eclipses hint
1 dip(s) that don't belong to the eclipses (at BTJD 3639.84): a planet orbiting both stars (circumbinary, like Kepler-16b) makes dips at irregular times, or a third star.
Transits of a giant star notable
Gaia places this star among the giants: planets transiting giants are rare, and a big star makes even a large planet's dip tiny.

Checked, nothing found (6)

Microlensing (rogue planet?) · Exocomet-shaped dip · Eclipse timing (third body?) · Eccentric eclipsing binary · Eclipses changing depth · Pulsating star in an eclipsing binary

Checked 2026-10-12 04:05 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Rare, already known: Extra dips outside the eclipses; Transits of a giant star (catalogued variable star nearby: ASASSN-V J234049.79+700531.0 (L), 87" away). Found automatically by hunt.py in TESS sector 24 (flagged in 3 sector(s)). Detection score 683.8. 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 Rare-find check: Extra dips outside the eclipses; Transits of a giant star 2026-10-10 Found by the automatic search in TESS sector 18

The signal

Type	Eclipsing binary
Status	Rare, already known
Period (days)	5.11266
Period source	hunt.py on TESS QLP sector 24
Eclipse / dip depth	66.0%
Amplitude	13.1%
Data used	TESS sector 24 (QLP)

The star (Gaia & TESS)

Distance (pc)	2,697 (~8,795 light years)
Temperature (Gaia)	5,477 K
Size (Gaia)	6.62 x the Sun
Mass (Gaia)	2.34 x the Sun
Luminosity (Gaia)	35.36 x the Sun
Colour, Gaia BP-RP	1.60
RUWE (Gaia)	1.01 - fits a single star
Gaia G mag	14.10
TESS mag	13.3

Names & neighbours

TIC ID	406634453
Gaia DR3 ID	2215261740925173760
SIMBAD name	not in SIMBAD
Nearest known variable	ASASSN-V J234049.79+700531.0 (L), 87" away
RA (deg)	355.238
Dec (deg)	70.0701
Look it up	SIMBAD · VSX · ESASky · ExoFOP

Record

Found by	hunt.py (automatic)
Date	2026-10-10
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.

How to read this diagram →

Data files

Download everything (.zip)