TIC 219733554

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: the catalogued variable Gaia DR3 1696953127817623808 (E, 55" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable Gaia DR3 1696953127817623808. The rare-find check confirms what is on record - still nice, but not a new discovery.

Irregular deep dimming significant
5 deep dips at irregular times, depths from 1.5% to 3.2%. Not periodic and not a young star - like Boyajian's star ('Tabby's star'), one of the strangest stars known.

Checked, nothing found (11)

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

Rare, already known: Irregular deep dimming (the catalogued variable Gaia DR3 1696953127817623808 (E, 55" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable Gaia DR3 1696953127817623808). WARNING: same period as the known variable Gaia DR3 1696953127817623808 55" away; the signal is probably its light leaking in. Found automatically by hunt.py in TESS sector 21 (flagged in 7 sector(s)). Detection score 95.4. 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 Rare-find check: Irregular deep dimming 2026-10-11 Found by the automatic search in TESS sector 21

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	1.39143
Period source	hunt.py on TESS QLP sector 21
Eclipse / dip depth	2.1%
Amplitude	2.2%
Data used	TESS sector 21 (QLP)

The star (Gaia & TESS)

Distance (pc)	663 (~2,163 light years)
Temperature (Gaia)	5,738 K
Size (Gaia)	1.14 x the Sun
Mass (Gaia)	0.97 x the Sun
Luminosity (Gaia)	1.27 x the Sun
Colour, Gaia BP-RP	0.83
RUWE (Gaia)	0.99 - fits a single star
Gaia G mag	13.55
TESS mag	13.13

Names & neighbours

TIC ID	219733554
Gaia DR3 ID	1696952818579977600
SIMBAD name	not in SIMBAD
Nearest known variable	Gaia DR3 1696953127817623808 (E, P = 1.3913 d), 55" away (same period!)
RA (deg)	230.144
Dec (deg)	72.3394
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)