TIC 266474845

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 4541-2230-1 (*). The rare-find check confirms what is on record - still nice, but not a new discovery.

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 (8)

Microlensing (rogue planet?) · Exocomet-shaped dip · Habitable zone & size · Transit timing (TTV) · Transit duration (TDV) · Changing transit depth · Lopsided transit · Dimming beside the transit

Checked 2026-10-11 16:34 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: Transits of a giant star (in SIMBAD as TYC 4541-2230-1 (*)). Found automatically by hunt.py in TESS sector 20 (flagged in 2 sector(s)). Detection score 221.6. 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 Planet check: Probably noise or an instrument effect 2026-10-11 Rare-find check: Transits of a giant star 2026-10-10 Gaia hints at a hidden companion star (RUWE 7.5) 2026-10-10 Found by the automatic search in TESS sector 14

The signal

Type	Transit candidate
Status	Notable, already known
Period (days)	2.07957
Period source	hunt.py on TESS QLP sector 20
Eclipse / dip depth	0.9%
Amplitude	0.8%
Data used	TESS sector 20 (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	~151.7 Earth radii (~13.53 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	1,797 (~5,860 light years)
Temperature (Gaia)	5,688 K
Size (Gaia)	14.24 x the Sun
Mass (Gaia)	3.00 x the Sun
Luminosity (Gaia)	140.08 x the Sun
Colour, Gaia BP-RP	1.11
RUWE (Gaia)	7.45 - hints at a hidden companion star
Gaia G mag	10.85
TESS mag	10.26

Names & neighbours

TIC ID	266474845
Gaia DR3 ID	1124590010536839040
SIMBAD name	TYC 4541-2230-1 [*]
Nearest known variable	none within 5'
RA (deg)	136.395
Dec (deg)	75.4348
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)