Tag Archives: Astronomy

Xi Serpentis (Nehushtan): A Triple Star in Serpens

Nehushtan, or Xi Serpentis, is a triple star system in the Serpens constellation, 105 light-years away. It will approach within 27 light-years in about 700,000 years. Named after a biblical idol, it showcases the intertwining of astronomy and faith. Observations highlight its brightness and challenging visibility of companions. Also known as 55 Ser, Xi Ser, SAO 160700, HD 159876, HIP 86263, HR 6561, GC 23881

Zeta Aquarii (Struve 2909): A Tight Binary Near the Water Bearer’s Shoulder

Zeta Aquarii, a binary star system in Aquarius, is about 92 light-years away. First identified by William Herschel in 1777, it appears as a single point to the naked eye. Both stars are similar F-type main-sequence stars, orbiting each other every 587 years, exhibiting complexity beneath their apparent simplicity. This post explores the star and illustrates what it looks like in the telescope. Also known as: STF 2909, SAO 146108, HIP 110960, GC 31398, HR 8558, Zet1 Aqr, 55 Aquarii, HD 213052, 55 Aqr

Struve 1850: A Wide Binary Star in Boötes

Struve 1850, a binary star system in the Boötes constellation, consists of two nearly identical A1V stars, easily observable with binoculars or small telescopes. Discovered by Friedrich Struve in 1823, they are over 800 light-years away. Their similar luminosity and proximity make them delightful targets for amateur astronomers. Also known as: STF 1850, HD 127067, SAO 83374, HIP 70786, HR 5414

Beta Draconis (Rastaban): The Dragon’s Eye

Beta Draconis, or Rastaban, is a prominent star in the constellation Draco, with an apparent magnitude of 2.8. This golden giant, situated 380 light-years away, is part of a binary system. Despite its brilliance, its companion is a dimmer star, visible only under optimal conditions. Also known as Bet Dra, Rastaben, Alwaid, Asuia, SAO 30429, HD 159181, 23 Dra, β Dra, 23 Draconis, HIP 85670, HR 6536, BU 1090

Mu Scorpii: A Pleasant Blue Visual Pair of Stars in Scorpius

Mu Scorpii, located in the tail of the Scorpion constellation, comprises two stars, Mu1 and Mu2, which appear close but are at different distances. Mu1 is a binary star system, while Mu2 is less luminous. Observations reveal the beauty of this pair, easily visible with binoculars, reminding us of the wonders of stargazing.

NGC 7006: The Ancient Lantern at the Rim of the Galaxy

NGC 7006, an elusive globular cluster located 135,000 light-years away in the constellation Delphinus, offers a unique challenge for amateur astronomers. Its faint visual magnitude of 10.6 makes it hard to detect, revealing a compact cluster over time through powerful telescopes. Observing it connects viewers with distant cosmic history. Also known as Caldwell 42.

Zeta Sagittae (Struve 2585): A Subtle Triple Star System in the Arrow Sagitta

Sagitta, a small constellation between Aquila and Vulpecula, features Zeta Sagittae, a fascinating triple star system. The brighter component, Zeta Sagittae A, shines at magnitude 5, while its companion, Zeta Sagittae B, is fainter at magnitude 9. Located near Altair, this hidden treasure is worth observing with a telescope. Also known as STF 2585, SAO 105298, 8 Sagittae, HR 7546, HIP 97496, HD 187362