TIC 11156179

Transit candidateNotable, 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 TYC 4032-168-1 (*); catalogued variable star nearby: WISE J015825.3+604912 (EW|EA, P = 0.40819 d), 116" away. The rare-find check confirms what is on record - still nice, but not a new discovery.

Eclipse timing (third body?) notable
The eclipses drift early and late by 11.7 min: light taking longer or shorter to reach us as the pair is pulled around by a hidden third star (or planet), or a slowly turning eccentric orbit.
Eccentric eclipsing binary notable
The second eclipse comes at phase 0.785 instead of 0.5: the orbit is stretched (eccentricity at least 0.448). Eccentric binaries show how tides shape orbits, and their slowly turning orbits test General Relativity.
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 (5)

Microlensing (rogue planet?) · Exocomet-shaped dip · Eclipses changing depth · Pulsating star in an eclipsing binary · Extra dips outside the eclipses

Checked 2026-10-11 16:26 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Probably noise or an instrument effect. Notable, already known: Eclipse timing (third body?); Eccentric eclipsing binary; Transits of a giant star (in SIMBAD as TYC 4032-168-1 (*); catalogued variable star nearby: WISE J015825.3+604912 (EW|EA, P = 0.40819 d), 116" away). Found automatically by hunt.py in TESS sector 18 (flagged in 1 sector(s)). Detection score 324.7. 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: Eclipse timing (third body?); Eccentric eclipsing binary; Transits of a giant star 2026-10-11 Planet check: Probably noise or an instrument effect 2026-10-10 Gaia hints at a hidden companion star (RUWE 1.8) 2026-10-10 Found by the automatic search in TESS sector 18

The signal

Type	Transit candidate
Status	Notable, already known
Period (days)	1.04201
Period source	hunt.py on TESS QLP sector 18
Eclipse / dip depth	2.0%
Amplitude	2.5%
Data used	TESS sector 18 (QLP)

Planet check

Verdict	Probably noise or an instrument effect ExoFOP check plot all test results light curve data
Size if it's a planet	~221.6 Earth radii (~19.77 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	2,362 (~7,703 light years)
Temperature (Gaia)	5,816 K
Colour, Gaia BP-RP	1.17
RUWE (Gaia)	1.81 - hints at a hidden companion star
Gaia G mag	11.47
TESS mag	10.89

Names & neighbours

TIC ID	11156179
Gaia DR3 ID	508214653985420928
SIMBAD name	TYC 4032-168-1 [*]
Nearest known variable	WISE J015825.3+604912 (EW\|EA, P = 0.40819 d), 116" away
RA (deg)	29.5693
Dec (deg)	60.7932
Look it up	SIMBAD · VSX · ESASky · ExoFOP

Record

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

How to read this diagram →

Data files

Download everything (.zip)