TIC 210238521

Transit candidateNotable, already known

Rare & notable finds

A notable find: not unheard of, but the kind of system astronomers are glad to have more of. How these checks work →

Already known: the catalogued variable ASASSN-V J203535.95+201205.8 (EA, 66" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable ASASSN-V J203535.95+201205.8. The rare-find check confirms what is on record - still nice, but not a new discovery.

Transits of a giant star notable
Gaia places this star among the giants: planets transiting giants are rare, and a big star makes even a large planet's dip tiny.

Checked, nothing found (7)

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

Checked 2026-10-11 16:35 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Probably noise or an instrument effect. Notable, already known: Transits of a giant star (the catalogued variable ASASSN-V J203535.95+201205.8 (EA, 66" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable ASASSN-V J203535.95+201205.8). WARNING: same period as the known variable ASASSN-V J203535.95+201205.8 66" away; the signal is probably its light leaking in. Found automatically by hunt.py in TESS sector 14 (flagged in 1 sector(s)). Detection score 213.2. 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: Transits of a giant star 2026-10-10 Found by the automatic search in TESS sector 14

The signal

Type	Transit candidate
Status	Notable, already known
Period (days)	1.45229
Period source	hunt.py on TESS QLP sector 14
Eclipse / dip depth	2.1%
Amplitude	2.5%
Data used	TESS sector 14 (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	~466.9 Earth radii (~41.65 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	5,475 (~17,857 light years)
Temperature (Gaia)	4,871 K
Size (Gaia)	33.79 x the Sun
Luminosity (Gaia)	577.22 x the Sun
Colour, Gaia BP-RP	1.46
RUWE (Gaia)	1.01 - fits a single star
Gaia G mag	12.06
TESS mag	11.34

Names & neighbours

TIC ID	210238521
Gaia DR3 ID	1817303879595816576
SIMBAD name	not in SIMBAD
Nearest known variable	ASASSN-V J203535.95+201205.8 (EA, P = 2.9027 d), 66" away (same period!)
RA (deg)	308.916
Dec (deg)	20.2117
Look it up	SIMBAD · VSX · ESASky · ExoFOP

Record

Found by	hunt.py (automatic)
Date	2026-10-10
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)