- The
angular diameter,
angular size,
apparent diameter, or
apparent size is an
angular distance describing how
large a
sphere or
circle appears from a given...
-
Apparent magnitude (m) is a
measure of the
brightness of a star,
astronomical object or
other celestial objects like
artificial satellites. Its
value depends...
- an
atmospheric optical phenomenon that
consists of a halo with an
apparent diameter of
approximately 22°
around the Sun or Moon.
Around the Sun, it may...
-
magnitude stars measured 2 arc
minutes (2′) in
apparent diameter (1⁄30 of a degree, or 1⁄15 the
diameter of the full moon), with
second through sixth magnitude...
-
measured the
apparent sizes of the Sun and the Moon and
concluded that the
apparent diameter of the Sun was
equal to the
apparent diameter of the Moon...
- days
before apogee (on
March 17, 2025, at 12:35 UTC), the Moon's
apparent diameter will be smaller. This
lunar eclipse will be the
first of an almost...
-
appearance (whether
total or annular)
depend on the
exact apparent diameter of the Moon. The
apparent diameter of the full moon
varies with the full moon cycle...
-
hours before perigee (on
September 18, 2024, at 9:20 UTC), the Moon's
apparent diameter was larger. This
eclipse also
occurred during a supermoon. This eclipse...
-
trigonometry or a
table of chords,
Archimedes determines the Sun's
apparent diameter by
first describing the
procedure and
instrument used to make observations...
- for a
viewer on Earth. A
total solar eclipse occurs when the Moon's
apparent diameter is
larger than the Sun's,
blocking all
direct sunlight,
turning day...