TIC 272832434

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: in SIMBAD as TYC 4281-977-1 (*); catalogued variable star nearby: Gaia DR3 2011808964014371072 (E, P = 3.0535 d), 76" away. The rare-find check confirms what is on record - still nice, but not a new discovery.

Microlensing (rogue planet?) hint
A one-off, symmetric brightening at BTJD 3417.33 that fits the gravitational-lens shape better than a flare (Einstein time 71.0 h). This length points to a star or brown dwarf as the lens. Very rare in TESS data; scattered light and asteroids can mimic it.
Transit timing (TTV) significant
The transits arrive early or late by 34.8 min (typical error 5.0 min) repeating every ~2.0 orbits: something is tugging on the planet - another planet, or a moon.
Transit duration (TDV) hint
The transit length changes from one transit to the next beyond the errors - a sign of a wobbling orbit (moon) or a precessing orbit.
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 (5)

Exocomet-shaped dip · Habitable zone & size · Exomoon timing pattern · Changing transit depth · Lopsided transit

Checked 2026-10-11 16:37 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: Microlensing (rogue planet?); Transit timing (TTV); Transit duration (TDV) (in SIMBAD as TYC 4281-977-1 (*); catalogued variable star nearby: Gaia DR3 2011808964014371072 (E, P = 3.0535 d), 76" away). Found automatically by hunt.py in TESS sector 24 (flagged in 1 sector(s)). Detection score 192.8. 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: Transit timing (TTV); Microlensing (rogue planet?); Transit duration (TDV) 2026-10-11 Found by the automatic search in TESS sector 24

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	1.65621
Period source	hunt.py on TESS QLP sector 24
Eclipse / dip depth	1.9%
Amplitude	2.2%
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	~156.7 Earth radii (~13.98 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	3,116 (~10,162 light years)
Temperature (Gaia)	6,733 K
Colour, Gaia BP-RP	1.13
RUWE (Gaia)	0.80 - fits a single star
Gaia G mag	11.59
TESS mag	11.06

Names & neighbours

TIC ID	272832434
Gaia DR3 ID	2011808242459482368
SIMBAD name	TYC 4281-977-1 [*]
Nearest known variable	Gaia DR3 2011808964014371072 (E, P = 3.0535 d), 76" away
RA (deg)	356.849
Dec (deg)	60.5605
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)