TIC 247354642

Transit candidateRare, already known

Rare & notable finds

Something unusual, worth a look - less certain than a significant find. How these checks work →

Already known: catalogued variable star nearby: ZTF J203641.10+295504.9 (RS, P = 0.93163 d), 63" away; in the ATLAS variable-star catalogue (Heinze et al. 2018) as J309.1648+29.9348. The rare-find check confirms what is on record - still nice, but not a new discovery.

Lopsided transit hint
The start of the transit is deeper than the end: a dust tail (disintegrating planet), rings, a fast-spinning star, or a blend.

Checked, nothing found (8)

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

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. Rare, already known: Lopsided transit (catalogued variable star nearby: ZTF J203641.10+295504.9 (RS, P = 0.93163 d), 63" away; in the ATLAS variable-star catalogue (Heinze et al. 2018) as J309.1648+29.9348). Found automatically by hunt.py in TESS sector 15 (flagged in 1 sector(s)). Detection score 181.3. 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: Lopsided transit 2026-10-10 Gaia hints at a hidden companion star (RUWE 33.9) 2026-10-10 Found by the automatic search in TESS sector 15

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	1.80464
Period source	hunt.py on TESS QLP sector 15
Eclipse / dip depth	2.3%
Amplitude	1.2%
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	~25.9 Earth radii (~2.31 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	405 (~1,322 light years)
Temperature (Gaia)	6,277 K
Size (Gaia)	1.39 x the Sun
Mass (Gaia)	1.20 x the Sun
Luminosity (Gaia)	2.68 x the Sun
Colour, Gaia BP-RP	0.85
RUWE (Gaia)	33.88 - hints at a hidden companion star
Radial velocity (Gaia)	speed changes by 31 km/s - likely an orbiting pair
Gaia G mag	11.99
TESS mag	11.54

Names & neighbours

TIC ID	247354642
Gaia DR3 ID	1860735864506434816
SIMBAD name	not in SIMBAD
Nearest known variable	ZTF J203641.10+295504.9 (RS, P = 0.93163 d), 63" away
RA (deg)	309.165
Dec (deg)	29.9348
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)