TIC 86277738

Transit candidateRare, already known

Rare & notable finds

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

Already known: in SIMBAD as TYC 4135-816-1 (*); the catalogued variable LINEAR 7008076 (EA, 57" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable LINEAR 7008076. 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.
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 (6)

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

Checked 2026-10-11 16:46 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; Transits of a giant star (in SIMBAD as TYC 4135-816-1 (*); the catalogued variable LINEAR 7008076 (EA, 57" away) has the same period - its light leaks into TESS's big pixels). WARNING: same period as the known variable LINEAR 7008076 57" away; the signal is probably its light leaking in. Found automatically by hunt.py in TESS sector 21 (flagged in 2 sector(s)). Detection score 147.4. 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: Lopsided transit; Transits of a giant star 2026-10-11 Found by the automatic search in TESS sector 21

The signal

Type	Transit candidate
Status	Rare, already known
Period (days)	0.581407
Period source	hunt.py on TESS QLP sector 21
Eclipse / dip depth	0.5%
Amplitude	0.6%
Data used	TESS sector 21 (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	~81.6 Earth radii (~7.28 Jupiter) - too big for a planet

The star (Gaia & TESS)

Distance (pc)	1,149 (~3,747 light years)
Temperature (Gaia)	4,803 K
Size (Gaia)	10.96 x the Sun
Mass (Gaia)	3.00 x the Sun
Luminosity (Gaia)	57.15 x the Sun
Colour, Gaia BP-RP	1.20
RUWE (Gaia)	0.93 - fits a single star
Gaia G mag	10.77
TESS mag	10.15

Names & neighbours

TIC ID	86277738
Gaia DR3 ID	1039143942581650048
SIMBAD name	TYC 4135-816-1 [*]
Nearest known variable	LINEAR 7008076 (EA, P = 1.1628 d), 57" away (same period!)
RA (deg)	141.363
Dec (deg)	61.1639
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)