When is the best time to observe Iota Ophiuchi?

Iota Ophiuchi is best observed from April through June, with peak visibility during May when it transits around midnight in the Northern Hemisphere.

Where is Iota Ophiuchi located in the sky?

Iota Ophiuchi lies in the constellation Schlangenträger at right ascension 16h 54m and declination +10° 10′.

What telescope do I need to split Iota Ophiuchi?

Splitting Iota Ophiuchi requires an aperture beyond typical amateur scopes — even 500 mm struggles against the primary's glare — the components are separated by about 0.4″ at magnitudes near 4.4. The companion is about 4.3 magnitudes fainter, so glare from the primary — not separation — sets the minimum aperture. Larger apertures and steady seeing help resolve the pair cleanly.

Iota Ophiuchi — Doppelstern in Schlangenträger

Helligkeit 4.4^m DoubleStar Schlangenträger (Oph) Sichtbar

Sternkarte + Liste + Plan

Beobachten

1Physikalische Eigenschaften

Helligkeit 4.38

Spektraltyp B8V

Sternfarbe Blau-weiß (B-V -0.08)

Entfernung 112 ly

2Position & Bezeichnungen

RA 16h 54m 00.5s

Dec +10° 09' 55.0"

Sternbild Schlangenträger (Oph)

HR 6281

HIP 82673

HD 152614

SAO 102458

Bayer Iota

Flamsteed 25 Oph

SIMBAD

3Wie leicht zu trennen?

Hauptstern 4.4 mag Begleiter 8.7 mag Abstand 0.4″

Melde dich an und konfiguriere deine Ausrüstung und deinen Standardstandort, um die Daten auf Dich anzupassen zu sehen.

Teleskop	Bortle 3	Bortle 4	Bortle 5
80 mm Refraktor 80mm Refr.	S. schwer	S. schwer	S. schwer
150 mm Newton 150mm Newt.	S. schwer	S. schwer	S. schwer
Celestron C8 (203 mm SCT) C8 203mm	S. schwer	S. schwer	S. schwer