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Cas
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Cassiopeiae
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the Seated Queen
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1
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+60
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598
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25th
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4
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&alpha Cas (Schedar)
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223
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"http://wwwinformationdelightinfo/encyclopedia/entry/Perseids" class="copylinks">Perseids
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"http://wwwinformationdelightinfo/encyclopedia/entry/Perseus_(constellation)" class="copylinks">Perseus
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90
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20
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November
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is a northern
Constellation which
Greek Mythology considered to represent a vain queen. It is one of the 88 modern constellations, and was also one of the 48 listed by
Ptolemy .
Cassiopeia contains two stars visible to the naked eye that rank among the most luminous in the galaxy:
ρ Cas and
V509 Cas .
If we were to observe Earth's
Sun from
Alpha Centauri , it would appear to be in Cassiopeia, at about 0.5 magnitude. Roughly speaking, the \/\/ of Cassiopeia would become a /\/\/, with the Sun at the leftmost end, closest to
ε Cas .
Using images captured by the
Spitzer Space Telescope , an analysis of dust cloud movement around the supernova showed some of the clumps and filaments were in the wrong position to have been energized by the original explosion. Estimates indicate that a more recent outburst from the neutron star occurred in
1953 . After calculating the direction of the outburst, it was found that this event could not have been seen from Earth. Krause speculates that the object may be a
Magnetar . (Krause, ''et al.'', 2005)
- ρ Cas is a yellow Hypergiant , one of the largest known stars. Its size is approximately 738 times larger than our Sun .
- in 1781 , this open cluster with an apparent brightness of 7.4m lies at a distance of approximately 8,130 ly. The cluster occupies a field 6' in diameter. M 103 can be seen with 7x35 binoculars about 1 degree northeast of Delta Cassiopeiae , but is best viewed using a telescope at low magnifications.
Viewing the fainter stars, visible to the naked eye, renders the constellation a human figure, sitting on a chair. Due to the proximity to
Polaris , in the Northern hemisphere it is visible the whole year, although sometimes upside down whilst in the chair
{Link without Title} . The greeks considered that this was an undignified position (being upside down, and also the normal way up, in a chair), and must be a suitable punishment for some crime. Since the punishment was one of losing dignity, vanity is a suitable crime.
Together with other constellations nearby (
Andromeda ,
Perseus ,
Cepheus , and possibly
Pegasus ), and the constellation
Cetus below Cepheus, this may be the source of the myth of the
Boast Of Cassiopeia , with which it is usually identified.
:Stars with proper names:
- ( 24/η Cas ) – double 3.44, 7.51 nearby
- 30/μ Cas (or ''Marfak'', see θ Cas ) 5.17 – nearby
:Stars with Bayer designations:
::
17/ζ Cas 3.69;
ι Cas 4.46;
15/κ Cas 4.17;
14/λ Cas 4.74;
25/ν Cas 4.90;
19/ξ Cas 4.80;
22/ο Cas 4.48;
20/π Cas 4.95;
7/ρ Cas 4.51 – hypergiant;
8/σ Cas 4.88;
5/τ Cas 4.88;
26/υ1 Cas 4.83;
28/υ2 Cas 4.62;
39/χ Cas 4.68;
34/φ Cas 4.95;
36/ψ Cas 4.72;
46/ω Cas 4.97;
48/A Cas 4.49
:Stars with Flamsteed designations:
::
1 Cas 4.84;
2 Cas 5.68;
4 Cas 4.96;
6 Cas 5.43;
9 Cas 5.90;
10 Cas 5.57;
12 Cas 5.38;
13 Cas 6.18;
16 Cas 6.47;
21/YZ Cas 5.64;
23 Cas 5.42;
31 Cas 5.32;
32 Cas 5.57;
35 Cas 6.33;
38 Cas 5.82;
40 Cas 5.28;
42 Cas 5.18;
43 Cas 5.57;
44 Cas 5.78;
47 Cas 5.27;
49 Cas 5.22;
50 Cas 3.95;
52 Cas 6.00;
53 Cas 5.59;
54 Cas 6.57;
55 Cas 6.05;
68 Cas 5.66
