TIC 166175613

Transit candidateRare, already known

Rare & notable finds

Something genuinely unusual turned up. Treat it as a lead: every one of these has ordinary explanations too, listed with each. How these checks work →

Already known: in SIMBAD as TYC 4172-1431-1 (*); catalogued variable star nearby: Gaia DR3 1666591076289064192 (ROT), 206" away. The rare-find check confirms what is on record - still nice, but not a new discovery.

Transit timing (TTV) significant
The transits arrive early or late by 41.7 min (typical error 11.9 min) repeating every ~182.4 orbits: something is tugging on the planet - another planet, or a moon.
Lopsided transit hint
The start of the transit is deeper than the end: a dust tail (disintegrating planet), rings, a fast-spinning star, or a blend.

Checked, nothing found (6)

Microlensing (rogue planet?) · Exocomet-shaped dip · Habitable zone & size · Transit duration (TDV) · Changing transit depth · Type of star

Checked 2026-10-11 17:09 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Probably noise or an instrument effect. Rare, already known: Transit timing (TTV); Lopsided transit (in SIMBAD as TYC 4172-1431-1 (*); catalogued variable star nearby: Gaia DR3 1666591076289064192 (ROT), 206" away). Found automatically by hunt.py in TESS sector 23 (flagged in 5 sector(s)). Detection score 57.1. 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: Transit timing (TTV); Lopsided transit 2026-10-11 Found by the automatic search in TESS sector 23

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	2.42827
Period source	hunt.py on TESS QLP sector 23
Eclipse / dip depth	1.1%
Amplitude	0.6%
Data used	TESS sector 23 (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	~41.0 Earth radii (~3.66 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	1,049 (~3,422 light years)
Temperature (Gaia)	9,515 K
Size (Gaia)	2.53 x the Sun
Mass (Gaia)	2.41 x the Sun
Luminosity (Gaia)	47.39 x the Sun
Colour, Gaia BP-RP	0.23
RUWE (Gaia)	0.92 - fits a single star
Radial velocity (Gaia)	speed changes by 57 km/s - likely an orbiting pair
Gaia G mag	11.18
TESS mag	11.08

Names & neighbours

TIC ID	166175613
Gaia DR3 ID	1666966559509957376
SIMBAD name	TYC 4172-1431-1 [*]
Nearest known variable	Gaia DR3 1666591076289064192 (ROT), 206" away
RA (deg)	217.06
Dec (deg)	62.405
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.

How to read this diagram →

Data files

Download everything (.zip)