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Experts say 2025 will be a particularly good year for the annual meteor shower as it will occur on a moonless night, allowing stargazers to see as many as 120 shooting stars per hour.
While 2025 may still be a mystery, we do predict that the mood will be decidedly calmer. For one thing, 2024 was a Dragon year on the lunar calendar—a frenetic, flamboyant, and fiery cycle that ...
Alpha Ophiuchi is a binary star system with an orbital period of about 8.62 years. The orbital parameters were only poorly known until 2011 when observations using adaptive optics produced a better orbital fit, allowing the individual masses of the two components to be determined. [ 4 ]
V1054 Ophiuchi/Gliese 643 has the largest number of stars of all star systems located within 10 pc from Earth. [4] It is also the nearest quintuple star system [3] (the next nearest star systems with at least five stars are GJ 2069 (quintuple) [4] at 41.8 light-years, and Castor [3] (sextuple) at 51.6 light-years), and the only quintuple star system within 10 pc.
η Ophiuchi (Latinised to Eta Ophiuchi) is the system's Bayer designation.WDS J17104-1544AB is its designation in the Washington Double Star Catalog.The designations of the two components as WDS J17104-1544 A and B derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).
Rho Ophiuchi (ρ Ophiuchi) is a multiple star system in the constellation Ophiuchus. The central system has an apparent magnitude of 4.63. [2] Based on the central system's parallax of 9.03 mas, [1] it is located about 360 light-years (110 parsecs) away. [1] The other stars in the system are slightly farther away. [11]
Breakthrough Starshot is a research and engineering project by the Breakthrough Initiatives to develop a proof-of-concept fleet of light sail interstellar probes named Starchip, [1] to be capable of making the journey to the Alpha Centauri star system 4.34 light-years away. It was founded in 2016 by Yuri Milner, Stephen Hawking, and Mark ...
System ← → ← → Star or (sub-) brown dwarf Distance ()Constellation Coordinates: RA, Dec (Ep J2000, Eq J2000)Stellar class Apparent magnitude (V) Parallax (Notes and additional references