Grave graver (constellation)

Constellation gravestones
Latin name	Caelum
Latin genitive	Caeli
Abbreviation	Cae
Right ascension	04 h 19 m 32 s to  05 h 05 m 01 s
declination	−48 ° 44 ′ 18 ″ to  −27 ° 01 ′ 30 ″
surface	124.865 deg² rank 81
Completely visible	41.7 ° N to 90 ° S
Observation time for Central Europe	December (partially)
Number of stars brighter than 3 mag	0
Brightest star (size)	α Caeli (4.45)
Meteor streams
Neighboring constellations ( clockwise from north )	Hare Eridanus Pendulum clock Swordfish painter Dove
swell	IAU ,

The grave stylus ( Latin Caelum ) is a constellation of the southern sky.

description

The grave stylus is an inconspicuous constellation south of the hare (Lepus) and east of the extensive Eridanus . Four stars form a curved line. Only two stars are brighter than the 5th magnitude .

From Germany, only the northern part of the constellation can be seen in December.

history

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for the original name. The English Wikipedia says something else.

In the 18th century, the French astronomer Nicolas Louis de Lacaille named some regions of the southern sky that had not yet been named. In contrast to the classic constellations, which are named after mythological figures, his constellations mostly bore the names of technical achievements. The original name was Caela Sculptoris ((the) grave stylus of the sculptor), the grave stylus is thus an engraving tool that was previously used to make copper or steel engravings .

The Caelum constellation as seen with the naked eye

Celestial objects

Due to its southern location, the constellation does not contain any stars with Flamsteed names .

Stars

B.	MR	Names or other designations	Apparent brightness  likes	Lj	Spectral class
α	1502		4.45	72	F2 V
γ 1	1652		4.55	186	K2 III
β	1503		5.05	91	F8 V
δ	1443		5.07	700	B3 V
ν	1557		6.06
λ	1653		6.24
γ 2	1653		6.32	321	F1 III
ζ	1539		6.35	430	K1 IV

Double stars

system	Apparent brightness  likes	distance
α	4.45 / 13	6 ″, 6
γ	4.55 / 6.32	2 ″, 9

The brightest star, Alpha Caeli , is a binary star system 72 light years away. At a distance of 6.6 arc seconds from the 4.45 mag bright main star is a faint companion of the 13th magnitude. To observe the system you need a medium telescope .

Gamma Caeli is a binary star system 186 light years away.

See also

• List of constellations

Web links

Commons : Constellation Gravestones  - Collection of images, videos and audio files

• Cross reference for 8 stars of the constellation.