Can any one please tell me the astronomical term for...............................................?

Question

In astronomy,what is the term used for stars that are so nearly in the same direction as seen from Earth that they appear to be a single star to the naked eye but may be separated by using a telescope??

Answer 1

The general term is double star. If the two stars are actually physically close so that they orbit each other, it is also called a binary star. Stars that appear close together but are actually at very different distances are called optical doubles.

Answer 2

"When two stars are so nearly in the same direction as seen from Earth that they appear to be a single star to the naked eye but may be separated by the use of telescopes, they are referred to as a double star."

Answer 3

I think they are called twins They both will have the same astronomical address (as referenced from Earth), but actually they will be very far apart, just both on the same apparent line. By observing at opposite times in the year, the differences can be measured; also the different color signatures.

Answer 4

For a beginner a series of binoculars are easily extra helpful than a telescope (extra handy to apply, besides by way of fact the cheap ones easily being functional). 7×50 or 10x50 are the straightforward beginner alternatives besides as what maximum extra matured human beings use (the 1st huge form is the magnification and the 2d is the aperture in millimetres) and that they dominate for good motives (incredibly that they are great adequate to be functional whilst additionally sufficiently small to easily be used). 7×50 binoculars won't shake around as a lot once you employ them besides as supply a much wider field of view so may be extra helpful nonetheless some desire the 10x50s, bigger binoculars may be too great to apply hand-held (a tripod may be functional to get, however the alternative of employing them without the tripod may be well worth having). i might additionally be shocked in case you are going to be able to desire to no longer see Jupiter's moons and many of the rings of Saturn with a good pair of 50 mm aperture binoculars.

Answer 5

If they are revolving around each other a binary star. Otherwise - double star -optical binary - telescopic binary - double star

Answer 6

The term you're looking for is "eclipsing binary" stars.

Answer 7

Binary's ?

Answer 8

cluster of stars...

Answer 9

They are in "conjuction"

Answer 10

a cluster.............i think