TIC 13115123

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: in SIMBAD as ATO J305.2231+39.5459 (V*); catalogued variable star nearby: MGAB-V2748 (YSO), 65" away; in the ATLAS variable-star catalogue (Heinze et al. 2018) as J305.2231+39.5459; SIMBAD lists ATO J305.2231+39.5459 also as ATO J305.2231+39.5459. 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 16:38 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 (in SIMBAD as ATO J305.2231+39.5459 (V*); catalogued variable star nearby: MGAB-V2748 (YSO), 65" away). NOTE: SIMBAD already lists this star (ATO J305.2231+39.5459) as type V*, so it may be known after all - check the SIMBAD references. Found automatically by hunt.py in TESS sector 15 (flagged in 2 sector(s)). Detection score 186.4. 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 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 15

The signal

Type	Transit candidate
Status	Notable, already known
Period (days)	0.831157
Period source	hunt.py on TESS QLP sector 15
Eclipse / dip depth	2.4%
Amplitude	2.9%
Data used	TESS sector 15 (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	~245.1 Earth radii (~21.86 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	1,872 (~6,106 light years)
Colour, Gaia BP-RP	1.64
RUWE (Gaia)	1.07 - fits a single star
Gaia G mag	12.59
TESS mag	11.79

Names & neighbours

TIC ID	13115123
Gaia DR3 ID	2061488232252025344
SIMBAD name	ATO J305.2231+39.5459 [V*]
Nearest known variable	MGAB-V2748 (YSO), 65" away
RA (deg)	305.223
Dec (deg)	39.546
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)