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First true 3D id Tech engine. id Tech 2.5 Quake II engine: C: 2001 C: Yes 3D Windows, Linux, macOS: Quake II, Heretic II, SiN, Daikatana, Gravity Bone: GPL-2.0-or-later: Also termed the Quake II engine. Improvements to the id Tech 2 engine. id Tech 3 Quake III Arena engine: C: 2005 C: Yes 3D Windows, Linux, macOS
Periastron epoch (T) B2026.36: Argument of periastron (ω) (secondary) 54.72 +1.88 −2.24 ...
Psi 1 Piscium (Psi 1 Psc, ψ 1 Piscium, ψ 1 Psc) is a binary star in the constellation Pisces. It is approximately 280 light years from Earth , based on its parallax . [ 1 ]
Psi Crateris, Latinized from ψ Crateris, is the Bayer designation for a visual binary [8] star system in the southern constellation of Crater. It is faintly visible to the naked eye with an apparent visual magnitude of 6.13. [2] According to the Bortle scale, it requires dark suburban or rural skies to view.
ψ 1 Draconis (Latinised to Psi 1 Draconis) is the system's Bayer designation and 31 Draconis its Flamsteed designation.The designation of the components – ψ 1 Draconis A and B – derives from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).
Psi is a free instant messaging client for the XMPP protocol (including such services as Google Talk [4]) which uses the Qt toolkit. It runs on Linux (and other Unix-like operating systems), Windows , macOS and OS/2 [ 5 ] (including eComStation and ArcaOS ).
Psi 2 Orionis a binary star system in the equatorial constellation of Orion. It has an apparent visual magnitude of 4.6, indicating that it is visible to the naked eye. Based upon an annual parallax shift of 2.87 mass , it is roughly 1,100 light years distant from the Sun .
Psi Persei (Psi Per, ψ Persei, ψ Per) is a single [7] Be star in the northern constellation of Perseus. It has an apparent visual magnitude of about 4.2, so it is visible to the naked eye at night under suitably dark skies. Based on parallax measurements, it is located at a distance of roughly 580 light-years (180 parsecs) from the Earth.