TIC 239024426

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 ASASSN-V J053548.83+370045.2 (EA, 31" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable ASASSN-V J053548.83+370045.2. 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 3312.21 that fits the gravitational-lens shape better than a flare (Einstein time 76.8 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.

Checked, nothing found (6)

Exocomet-shaped dip · Habitable zone & size · Transit timing (TTV) · Changing transit depth · Lopsided transit · Type of star

Checked 2026-10-11 16:27 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?) (the catalogued variable ASASSN-V J053548.83+370045.2 (EA, 31" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable ASASSN-V J053548.83+370045.2). WARNING: same period as the known variable ASASSN-V J053548.83+370045.2 31" away; the signal is probably its light leaking in. Found automatically by hunt.py in TESS sector 19 (flagged in 1 sector(s)). Detection score 298.8. 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: Microlensing (rogue planet?) 2026-10-11 Found by the automatic search in TESS sector 19

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	1.07446
Period source	hunt.py on TESS QLP sector 19
Eclipse / dip depth	4.8%
Amplitude	5.8%
Data used	TESS sector 19 (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	~37.6 Earth radii (~3.35 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	605 (~1,975 light years)
Temperature (Gaia)	5,535 K
Size (Gaia)	1.62 x the Sun
Mass (Gaia)	1.00 x the Sun
Luminosity (Gaia)	2.21 x the Sun
Colour, Gaia BP-RP	0.94
RUWE (Gaia)	0.91 - fits a single star
Gaia G mag	12.91
TESS mag	12.43

Names & neighbours

TIC ID	239024426
Gaia DR3 ID	189473272538438272
SIMBAD name	not in SIMBAD
Nearest known variable	ASASSN-V J053548.83+370045.2 (EA, P = 2.1489 d), 31" away (same period!)
RA (deg)	83.9617
Dec (deg)	37.007
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)