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Lesson Tag: Double Stars

Double Stars in Perseus

Target Type R. A. Dec. Constellation Magnitudes Separation* (A) Miram(Struve 307) Double Star 02h 50m 39s +55° 53′ 59″ Pegasus +3.76, +8.50 30.4″ at 121° (B) Struve 331 Double Star 03h 00m 52s +52° 21′ 06″ Pegasus +5.26, +6.17 12.0″ at 086° (C) Struve 552 Double Star 04h 31m 25s +40° 00′ 33″ Pegasus +6.78, …

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Double Stars in Gemini

Target Type R. A. Dec. Constellation Magnitude Separation* Alpha Geminorium Double Star 07h 34m 36s +31° 53′ 18″ Gemini 1.6 and 3.0 5.2″ at 54° Eta Geminorum Double Star 06h 16m 53s +22° 30′ 24″ Gemini 3.3 and 6.2 1.6″ at 251° e Geminorum Double Star 06h 54m 39s +13° 10′ 34″ Gemini 4.7 and …

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Challenging Doubles in Andromeda

Target Type R. A. Dec. Constellation Magnitude Size AC1 Double Star 00h 20m 54s +32° 58′ 41″ Andromeda +6.9 and +8.3 n/a 36 And Double Star 00h 54m 58s +23° 37′ 43″ Andromeda +6.5 and +5.5 n/a Overview In December’s final challenge – 2020’s final challenge, we’re going to take a look at two challenging …

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Double Stars of Orion

Orion is one of the most famous and easily recognised constellations in the night sky. It is also winter’s predominant evening vision which is why right now is a perfect time to scan some of its brightest stars hunting for doubles. There are eight such doubles I’m going to give you to hunt down in …

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Double Stars in Boötes

Target Type R. A. Dec. Constellation Magnitude Separation* (A) Asellus Tertius Double Star 14h 13m 29s +51° 47′ 24″ Boötes 4.5 and 6.6 14.3″ at 235° (B) STF 1785 Double Star 13h 49m 04s +26° 58′ 45″ Boötes 8.1 and 7.2 2.7″ at 193° (C) STT 298 Double Star 15h 36m 02s +39° 48′ 09″ …

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Izar, Double Star in Boötes

Target Type R. A. Dec. Constellation Magnitude Separation Izar Double Star 14h 45m 53s +26° 59′ 20″ Boötes +2.5 & +4.8 2.9″ Overview I’ve just published a guide to the constellation of Boötes over on Love the Night Sky, and our third challenge this month is to observe the double star Izar, which is a …

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Double Stars in Pegasus

Target Type R. A. Dec. Constellation Magnitude Separation* (A) 3 Pegasi Double Star 21h 37m 44s +06° 37′ 06″ Pegasus +6.2 39.0″ at 348° (B) 72 Pegasi Double Star 23h 33m 57s +31° 19′ 31″ Pegasus +6.1 0.6″ at 108° (C) 85 Pegasi Double Star 00h 02m 10s +27° 04′ 56″ Pegasus +5.8 0.8″ at …

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