SW Lac (Binaire à éclipse)
RA: 22h 53m 41.66s, DE: +37° 56' 18.60" (343.4235833283, 37.9384999997)
08/08/2026, 05:48 - 08/08/2026, 11:17 (UTC)
- Observateur: Vivian Dai
- Créé: 15/08/2026, 06:17
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Station:
Vancouver, British Columbia, Canada. Backyard site, 40 m elevation. AAVSO observer code VDBA.
Lat: +49°, Long: -123° - Instrument: 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.
- Bande photométrique: TG
- Standard de temps: BjdTbd
- Luminosité dans: Mag
Note:
540 points, ZWO Seestar S30 Pro. Differential photometry against the same fixed nine-star ensemble as our 2026-08-03 observation, 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 2461260.91902 +/- 0.00116 d, an O-C of -3.10 +/- 1.67 min against a TESS quadratic ephemeris, a residual of +0.11 sigma. AAVSO observer code VDBA.
Minima déterminés
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P: 2461260.91614 (08/08/2026, 09:59)
HJDmin: 2461260.91916 +/- 0.00048
Correction héliocentrique: 0.00302
Qualité des données (beta): 4 (passable)
Note:Fitted with the VarAstro tool over JD 2461260.8752 onward, deliberately excluding the maximum earlier in this 5.5 h window; fitting across it moved the result by 7 minutes. An independent Kwee-van Woerden fit of the same curve in our own pipeline gives 2461260.91902 +/- 0.00116 d, agreeing with this value to 12 seconds (0.11 sigma). Both BJD_TDB. Instrumental differential magnitudes against the same fixed nine-star ensemble as our 2026-08-03 observation; ZWO Seestar S30 Pro. AAVSO observer code VDBA.
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Aucune étoile de comparaison ni de contrôle n'est explicitement indiquée pour cette observation. Elles devraient être repérées sur la carte du champ d'étoiles.