SW Lac (Zákrytová dvojhvězda)
RA: 22h 53m 41.66s, DE: +37° 56' 18.60" (343.4235833283, 37.9384999997)
03.08.2026, 05:39 - 03.08.2026, 08:59 (UTC)
- Pozorovatel: Vivian Dai
- Vytvořeno: 15.08.2026, 06:05
-
Stanice:
Vancouver, British Columbia, Canada. Backyard site, 40 m elevation. AAVSO observer code VDBA.
Lat: +49°, Long: -123° - Přístroj: ZWO Seestar S30 Pro: 30 mm aperture, 160 mm focal length, alt-azimuth. Sony IMX585 colour CMOS (Bayer). No filter wheel; photometry from the green channel, reported as AAVSO band TG.
- Fotometrický obor: TG
- Časový standard: BjdTbd
- Jasnost v: Mag
Poznámka:
477 points over 200 min, ZWO Seestar S30 Pro. Differential photometry against a fixed nine-star ensemble, each comparison vetted against VSX and Gaia for variability. Magnitudes are instrumental differential with an arbitrary zero point, not standard-transformed; the shape of the curve is unaffected. Times are BJD_TDB. Our own Kwee-van Woerden fit of this night gives 2461255.78786 +/- 0.00099 d, which agrees with a TESS ephemeris from sectors 16, 56 and 83 at +0.32 sigma. AAVSO observer code VDBA.
Stanovená minima
-
P: 2461255.78535 (03.08.2026, 06:50)
HJDmin: 2461255.78809 +/- 0.00027
Heliocentrická korekce: 0.00274
Kvalita dat (beta): 3 (dobrá)
Poznámka:Fitted with the VarAstro tool. An independent Kwee-van Woerden fit of the same curve in our own pipeline gives 2461255.78786 +/- 0.00099 d, agreeing with this value to 19 seconds (0.22 sigma). Both BJD_TDB. Instrumental differential magnitudes against a fixed nine-star ensemble, each comparison vetted against VSX and Gaia for variability; ZWO Seestar S30 Pro. AAVSO observer code VDBA.
. . .
U tohoto pozorování nejsou explicitně uvedeny srovnávací a kontrolní hvězdy. Měly by být vyznačeny v mapce hvězdného pole.