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Astronomers know that there isn't really a "celestial sphere", a globe of crystal in which the stars are embedded. But it is often convenient to talk of a "sphere" around the Earth, in which all the stars and planets move.
And sometimes it makes the math a whole lot easier. Navigators do all their calculations AS IF all the stars were stuck to a crystal sphere, and the Moon and planets wandered around inside it.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoAstronomers use celestial spheres and mathematical equations to approximate the distances between the star and other celestial objects.
Wiki User
∙ 13y agoThey use celestial spheres and mathematical equations to approximate the distances between the star and other celestial objects.
- Nana Zaddii
Wiki User
∙ 14y agoatronomers use satellites to map the night sky.
Wiki User
∙ 13y agothey look at telescopes
Wiki User
∙ 12y agostar
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Used to to take bearings from the sun or stars to plot the ships position on a map?
quadrant
What was used to take the bearings from the sun or stars to plot the ships position on a map?
a quadrant
What is a star diagram in celestial navigation?
a star diagram is a circle on which we plot the location of stars the circle represents the sky above and it is divided into 4 quadrants while knowing the northerly direction we plot the stars with respect to its location from true north and we tabulate its declination in a separate column since location of stars for a particular time from a particular geographical position is predictable so we match it and obtain own position in terms of latitude and longitude
Was used to take bearings from the sun or stars to plot the ships positions on a map?
yes
What is the main sequence phase of a star?
The main sequence phase means that, if you plot an H-R (Hertzsprung-Russel) diagram, it is in the so-called "main sequence", the area in the graph where you find the majority of stars. Those are the stars that currently fuse hydrogen into helium.
What was used to take bearing from the sun or stars to plot the ships position on a map?
plot the ships position
What was used to take bearing from the sun or stars to plot the ship's position on a map?
plot the ships position
How do astronomers use the celestial sphere to plot a star's exact positions?
Astronomers use celestial spheres and mathematical equations to approximate the distances between the star and other celestial objects.
Used to to take bearings from the sun or stars to plot the ships position on a map?
quadrant
What was used to take the bearings from the sun or stars to plot the ships position on a map?
a quadrant
A was used to take bearings from the sun or stars to plot the ships position on a map?
a quadrant
What is another name for a plot of surface temperatures of stars against their absolute magnitude?
This type of diagram is often called a Hertzprung-Russell diagram after two astronomers.
What two things do astronomers compare to calculate the distance to a star?
They use trigonometry to measure the parallax error in the nearby star's position based on a large triangle, the base of which is formed by two times the distance of the Earth to the Sun. Simply stated, they plot the star's position on one day, and again six months later, when the Earth is 186,000 miles away from its original position. They use the far distant stars as a calibration standard, and use the Pythagorean theorem to figure out the rest.
What is a star diagram in celestial navigation?
a star diagram is a circle on which we plot the location of stars the circle represents the sky above and it is divided into 4 quadrants while knowing the northerly direction we plot the stars with respect to its location from true north and we tabulate its declination in a separate column since location of stars for a particular time from a particular geographical position is predictable so we match it and obtain own position in terms of latitude and longitude
What Gives Exact Location On A Map?
Use a compass to take 3 bearings to known objects on the map and plot the reverse bearings from these on the map. Where the lines cross is your exact (to the scale of the map) location.Use a GPS and plot your position using the map coordinates.
What is the plot in Number the Stars?
k+c I+J
Can a frequency table make a stem-and-leaf plot?
yes but you need the exact numbers from the intervals in the table to make a stem and leaf plot.
