TIC 99899461

Transit candidateNotable, 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 NSVS 2598586 (EB, 90" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable NSVS 2598586. The rare-find check confirms what is on record - still nice, but not a new discovery.

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 (8)

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

Checked 2026-10-11 16:49 on NVIDIA GeForce RTX 4070, using every TESS sector of this star. All results (.json)

Notes

Notable, already known: Transits of a giant star (the catalogued variable NSVS 2598586 (EB, 90" away) has the same period - its light leaks into TESS's big pixels; same period as the known variable NSVS 2598586). WARNING: same period as the known variable NSVS 2598586 90" away; the signal is probably its light leaking in. Found automatically by hunt.py in TESS sector 21 (flagged in 3 sector(s)). Detection score 123.0. 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: Transits of a giant star 2026-10-11 Found by the automatic search in TESS sector 21

The signal

Type	Transit candidate
Status	Notable, already known
Period (days)	1.61421
Period source	hunt.py on TESS QLP sector 21
Eclipse / dip depth	0.7%
Amplitude	0.8%
Data used	TESS sector 21 (QLP)

The star (Gaia & TESS)

Distance (pc)	1,063 (~3,468 light years)
Colour, Gaia BP-RP	1.14
RUWE (Gaia)	1.11 - fits a single star
Gaia G mag	11.81
TESS mag	11.22

Names & neighbours

TIC ID	99899461
Gaia DR3 ID	861142252814207616
SIMBAD name	not in SIMBAD
Nearest known variable	NSVS 2598586 (EB, P = 1.6159 d), 90" away (same period!)
RA (deg)	167.582
Dec (deg)	60.5808
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)