TIC 288434139

Transit candidateRare, already known

Rare & notable finds

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

Already known: the catalogued variable KELT KC21C13259 (EA, 53" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable KELT KC21C13259. The rare-find check confirms what is on record - still nice, but not a new discovery.

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 (8)

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

Checked 2026-10-11 16:50 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 (the catalogued variable KELT KC21C13259 (EA, 53" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable KELT KC21C13259). WARNING: same period as the known variable KELT KC21C13259 53" away; the signal is probably its light leaking in. Found automatically by hunt.py in TESS sector 22 (flagged in 3 sector(s)). Detection score 109.8. 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 22

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	2.70858
Period source	hunt.py on TESS QLP sector 22
Eclipse / dip depth	4.5%
Amplitude	3.4%
Data used	TESS sector 22 (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	~36.3 Earth radii (~3.24 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	1,116 (~3,639 light years)
Colour, Gaia BP-RP	0.84
RUWE (Gaia)	1.02 - fits a single star
Gaia G mag	13.91
TESS mag	13.47

Names & neighbours

TIC ID	288434139
Gaia DR3 ID	1550033978933614720
SIMBAD name	not in SIMBAD
Nearest known variable	KELT KC21C13259 (EA, P = 2.7101 d), 53" away (same period!)
RA (deg)	202.767
Dec (deg)	45.038
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)