When is the best time to observe Sigma Andromedae?

Sigma Andromedae is best observed from August through October, with peak visibility during September when it transits around midnight in the Northern Hemisphere.

Where is Sigma Andromedae located in the sky?

Sigma Andromedae lies in the constellation Andrómeda at right ascension 00h 18m and declination +36° 47′.

What telescope do I need to split Sigma Andromedae?

Splitting Sigma Andromedae requires an aperture of roughly 230 mm or larger — the components are separated by about 7.0″ at magnitudes near 4.5. The companion is about 6.9 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

Sigma Andromedae — Estrella Doble en Andrómeda

Magnitud 4.5^m DoubleStar Andrómeda (And) Visible

Mapa Estelar + Lista + Plan

Observar

1Propiedades Físicas

Magnitud 4.52

Tipo variable Delta Scuti (Pulsating)

Tipo Espectral A2V

Color de la Estrella Blanco (B-V 0.05)

Distancia 142 ly

2Posición e Identificadores

RA 00h 18m 19.7s

Dec +36° 47' 07.0"

Constelación Andrómeda (And)

HR 68

HIP 1473

HD 1404

SAO 53798

Bayer Sigma

Flamsteed 25 And

SIMBAD

3Dificultad de separación

Principal 4.5 mag Compañera 11.4 mag Separación 7.0″

Iniciar sesión y configura tu equipo y ubicación predeterminada para ver una fila personalizada.

Telescopio	Bortle 3	Bortle 4	Bortle 5
Refractor 80 mm Refr. 80mm	M. dif.+	M. dif.+	M. dif.+
Newton 150 mm Newt. 150mm	Difícil	Difícil	Difícil
Celestron C8 (SCT 203 mm) C8 203mm	Difícil+	Difícil+	Difícil+