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ZENITH [2 records]

Record 1 2003-11-14

English

Subject field(s)
  • Mathematical Geography
  • Astrophysics and Cosmography
  • Surveying
DEF

The point of the celestial sphere that is vertically above the observer and directly opposite the nadir ...

French

Domaine(s)
  • Géographie mathématique
  • Astrophysique et cosmographie
  • Arpentage
DEF

Point de la sphère céleste situé verticalement au-dessus de la tête d'un observateur.

CONT

La verticale coupe la surface de la sphère céleste en deux points: au «zénith [...]», au-dessus de la tête de l'observateur, et au «nadir [...]», point diamétralement opposé.

Spanish

Campo(s) temático(s)
  • Geografía matemática
  • Astrofísica y cosmografía
  • Agrimensura
DEF

Intersección de la vertical, situada encima de la cabeza del observador con esfera celeste.

Save record 1

Record 2 2001-07-20

English

Subject field(s)
  • Astronautics
  • Orbital Stations
DEF

The point directly overhead, as determined by the indefinite upward extension of a plumb line.

CONT

Orientation is described using the terms "forward", "aft", "port", "starboard", "zenith", and "nadir". There is a diagram of the ISS [International Space Station] in the instructions that depicts these axes. [Generally, the Russian modules are aft, and the European modules are/will be forward; "nadir" and "zenith" are, of course, "down" and "up," respectively.]

OBS

zenith: term officially approved by the International Space Station official approval Group (ISSOAG).

French

Domaine(s)
  • Astronautique
  • Stations orbitales
DEF

Point de la sphère céleste situé sur la verticale ascendante de l'observateur.

OBS

Point opposé à nadir. Le nadir étant le point de la sphère céleste situé sur la verticale de l'observateur, vers le centre de la Terre.

OBS

zénith : terme uniformisé par le Groupe de travail de la terminologie de la Station spatiale internationale (GTTSSI).

Spanish

Campo(s) temático(s)
  • Astronáutica
  • Estaciones orbitales
Save record 2

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