TIC 742710080

Eclipsing binaryNotable, 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 TYC 3780-1078-1 (*); catalogued variable star nearby: CSS_J070822.5+524730 (EW, P = 0.26207 d), 117" away. The rare-find check confirms what is on record - still nice, but not a new discovery.

Eccentric eclipsing binary notable
The second eclipse comes at phase 0.423 instead of 0.5: the orbit is stretched (eccentricity at least 0.121). Eccentric binaries show how tides shape orbits, and their slowly turning orbits test General Relativity.

Checked, nothing found (6)

Microlensing (rogue planet?) · Exocomet-shaped dip · Eclipse timing (third body?) · Pulsating star in an eclipsing binary · Extra dips outside the eclipses · Type of star

Checked 2026-10-11 21:17 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Notable, already known: Eccentric eclipsing binary (in SIMBAD as TYC 3780-1078-1 (*); catalogued variable star nearby: CSS_J070822.5+524730 (EW, P = 0.26207 d), 117" away). Found automatically by hunt.py in TESS sector 20 (flagged in 1 sector(s)). Detection score 1080.5. 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 Rare-find check: Eccentric eclipsing binary 2026-10-11 Gaia hints at a hidden companion star (RUWE 1.8) 2026-10-11 Found by the automatic search in TESS sector 20

The signal

Type	Eclipsing binary
Status	Notable, already known
Period (days)	10.4158
Period source	hunt.py on TESS QLP sector 20
Eclipse / dip depth	67.6%
Amplitude	1.1%
Data used	TESS sector 20 (QLP)

The star (Gaia & TESS)

Distance (pc)	468 (~1,527 light years)
RUWE (Gaia)	1.79 - hints at a hidden companion star
Gaia G mag	13.22
TESS mag	12.76

Names & neighbours

TIC ID	742710080
Gaia DR3 ID	981468098072910592
SIMBAD name	TYC 3780-1078-1 [*]
Nearest known variable	CSS_J070822.5+524730 (EW, P = 0.26207 d), 117" away
RA (deg)	107.103
Dec (deg)	52.8239
Look it up	SIMBAD · VSX · ESASky · ExoFOP

Record

Found by	hunt.py (automatic)
Date	2026-10-11
Last update	2026-10-11

Data files

Download everything (.zip)