TIC 271241961

Transit candidateRare, already known

Rare & notable finds

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

Already known: in SIMBAD as TYC 4288-1162-1 (*); catalogued variable star nearby: ZTF J233557.16+644741.7 (EA, P = 3.9224 d), 100" away. The rare-find check confirms what is on record - still nice, but not a new discovery.

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 (9)

Microlensing (rogue planet?) · Exocomet-shaped dip · Habitable zone & size · Transit timing (TTV) · Transit duration (TDV) · Changing transit depth · Dimming beside the transit · Trojan companions (L4/L5) · Type of star

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. Rare, already known: Lopsided transit (in SIMBAD as TYC 4288-1162-1 (*); catalogued variable star nearby: ZTF J233557.16+644741.7 (EA, P = 3.9224 d), 100" away). Found automatically by hunt.py in TESS sector 24 (flagged in 3 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: Lopsided transit 2026-10-11 Found by the automatic search in TESS sector 24

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	4.30805
Period source	hunt.py on TESS QLP sector 24
Eclipse / dip depth	3.0%
Amplitude	0.4%
Data used	TESS sector 24 (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	~18.9 Earth radii (~1.68 Jupiter)

The star (Gaia & TESS)

Distance (pc)	749 (~2,442 light years)
Colour, Gaia BP-RP	0.46
RUWE (Gaia)	0.85 - fits a single star
Radial velocity (Gaia)	speed changes by 61 km/s - likely an orbiting pair
Gaia G mag	11.47
TESS mag	11.35

Names & neighbours

TIC ID	271241961
Gaia DR3 ID	2209195769635187968
SIMBAD name	TYC 4288-1162-1 [*]
Nearest known variable	ZTF J233557.16+644741.7 (EA, P = 3.9224 d), 100" away
RA (deg)	353.99
Dec (deg)	64.8227
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)