TIC 229401727

Transit candidatePossible rare find

Rare & notable finds

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

Fully unknown: not in SIMBAD, not in Gaia DR3's variable lists, not on NASA's TOI lists, no catalogued variable star within 5′ (VSX, ASAS-SN, ZTF, ATLAS, WISE, TESS EB catalogues) - this may be new.

Transit duration (TDV) hint
The transit length changes from one transit to the next beyond the errors - a sign of a wobbling orbit (moon) or a precessing orbit.
Lopsided transit hint
The end of the transit is deeper than the start: a dust tail (disintegrating planet), rings, a fast-spinning star, or a blend.

Checked, nothing found (10)

Microlensing (rogue planet?) · Exocomet-shaped dip · Habitable zone & size · Transit timing (TTV) · Changing transit depth · Dimming beside the transit · Trojan companions (L4/L5) · More planets in the system · Self-lensing binary · Type of star

Checked 2026-10-11 16:56 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Probably noise or an instrument effect. Unusual: Transit duration (TDV); Lopsided transit. See the Rare & notable finds section. Found automatically by hunt.py in TESS sector 21 (flagged in 13 sector(s)). Detection score 95.0. 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 duration (TDV); Lopsided transit 2026-10-11 Found by the automatic search in TESS sector 21

The signal

Type	Transit candidate
Status	Possible rare find
Period (days)	1.50586
Period source	hunt.py on TESS QLP sector 21
Eclipse / dip depth	2.2%
Amplitude	1.1%
Data used	TESS sector 21 (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	~18.4 Earth radii (~1.64 Jupiter)

The star (Gaia & TESS)

Distance (pc)	593 (~1,935 light years)
Temperature (Gaia)	6,006 K
Size (Gaia)	1.22 x the Sun
Mass (Gaia)	1.08 x the Sun
Luminosity (Gaia)	1.74 x the Sun
Colour, Gaia BP-RP	0.83
RUWE (Gaia)	1.25 - fits a single star
Gaia G mag	13.19
TESS mag	12.76

Names & neighbours

TIC ID	229401727
Gaia DR3 ID	2238850972622451456
SIMBAD name	not in SIMBAD
Nearest known variable	none within 5'
RA (deg)	292.502
Dec (deg)	60.3272
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)