TIC 422297664

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: the catalogued variable MNIC V64 (EA, 35" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable MNIC V64. 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 0.197 instead of 0.5: the orbit is stretched (eccentricity at least 0.475). Eccentric binaries show how tides shape orbits, and their slowly turning orbits test General Relativity.

Checked, nothing found (7)

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

Checked 2026-10-11 19:37 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Notable, already known: Eccentric eclipsing binary (the catalogued variable MNIC V64 (EA, 35" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable MNIC V64). WARNING: same period as the known variable MNIC V64 35" away; the signal is probably its light leaking in. Found automatically by hunt.py in TESS sector 17 (flagged in 3 sector(s)). Detection score 1257.5. 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 2026-10-10 Found by the automatic search in TESS sector 16

The signal

Type	Eclipsing binary
Status	Notable, already known
Period (days)	3.64204
Period source	hunt.py on TESS QLP sector 17
Eclipse / dip depth	58.1%
Amplitude	39.9%
Data used	TESS sector 17 (QLP)

The star (Gaia & TESS)

Distance (pc)	1,055 (~3,442 light years)
Temperature (Gaia)	6,828 K
Size (Gaia)	1.75 x the Sun
Mass (Gaia)	1.47 x the Sun
Luminosity (Gaia)	6.03 x the Sun
Colour, Gaia BP-RP	1.09
RUWE (Gaia)	0.97 - fits a single star
Gaia G mag	13.91
TESS mag	13.36

Names & neighbours

TIC ID	422297664
Gaia DR3 ID	2200023643641770368
SIMBAD name	not in SIMBAD
Nearest known variable	MNIC V64 (EA, P = 3.6393 d), 35" away (same period!)
RA (deg)	335.821
Dec (deg)	57.8382
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)