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The Chronicles of Local Space

A fictional exploration of nearby star systems

Eta Cassiopeiae

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The Eta Cassiopeiae System
Right Ascension	00h 49m
Declination	+57° 49'
Distance	19.37 ± 0.07 ly
Star	Eta Cassiopeiae A	Eta Cassiopeiae B
Spectral Class	G3V	K7V
Estimated Mass	0.95 × Sol	0.62 × Sol
Luminosity	1.29 × Sol	0.03 × Sol

Star charts
Eta Cassiopeiae as seen from Sol.	Sol as seen from Eta Cassiopeiae.

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Brightest stars as seen from Eta Cassiopeiae
Includes all stars of magnitude 1.00 and brighter
Star	Magnitude	Distance
Alpha Aurigae (Capella)	−0.63	30.9
Canopus	−0.53	321.9
Vega	−0.20	22.6
Rigel	0.18	861.3
Arcturus	0.38	44.6
Betelgeuse	0.43	493.8
Achernar	0.59	148.8
Aldebaran	0.60	58.9
Sirius	0.71	23.0
Beta Centauri (Hadar)	0.71	411.1
Alpha Crucis (Acrux)	0.90	341.3

Local Space

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Stargates in this system
Destination	Distance
107 Piscium	15.4
Delta Trianguli	20.2
Sigma Draconis	11.2

Eta Cassiopeiae A

The planets of the Eta Cassiopeiae A system
Planet	SMA (AU)	Orbital Period	e	Equatorial Diameter (km)	Mass (Earths)	Density (g/cm³)	Gravity (Earth g)	Atmospheric Pressure (Earth=1)	Sidereal Day	Mean Solar Day	Axial Tilt	Known Moons
Pericles	0.2557	48.489 d	0.0003	6480	0.1025	4.30	0.3970	0.000138	48d 11h 44.0m	Synchronous	00° 04.4'	0
Alexander	0.4708	121.13 d	0.0100	7171	0.1234	3.82	0.3902	0.00316	121d 03h 14.2m	Synchronous	01° 36.6'	0
Pyrrhus	0.7329	235.31 d	0.0195	10300	0.4287	4.48	0.6568	0.615	1d 05h 29.5m	1d 05h 38.8m	07° 42.5'	0
Lysander	1.197	1.3449 y	0.0264	16320	2.248	5.93	1.373	4.17	20h 07.4m	20h 09.5m	31° 40.1'	1
Aristides	2.209	3.3720 y	0.0261	8536	0.2172	4.03	0.4848	0.454	13h 53.0m	13h 53.4m	31° 17.7'	2

Natural satellites of the Eta Cassiopeiae A system
Name	Diameter (km)	Period (days)	Semimajor Axis (km)	Ecc	Inc
Natural Satellites of Lysander [Hide details][Show details]
Aracus	206	1.074	58030	0.0006	0.19
Natural Satellites of Aristides [Hide details][Show details]
Themistocles	78	0.4509	14930	0.0026	0.26
Cleisthenes	57	2.306	44330	0.0361	2.07

Pericles

Alexander

Pyrrhus

Lysander

Lysander is the largest habitable planet within ten parsecs of the Sun.

Aristides

Eta Cassiopeiae B

Details for this system are not yet ready.

Further reading

Fictional depictions of the Eta Cassiopeiae system

Imagination is vaster than all of space.

Eta Cassiopeiae in Wikipedia: Stars and planetary systems in fiction.

Nonfictional links

Just the facts.

Eta Cassiopeiae A and Eta Cassiopeiae B in the ARI Database for Nearby Stars.
Eta Cassiopeiae in the Bright Star Catalogue.
is in the Encyclopedia of Suns.
Eta Cassiopeiae in the Internet Stellar Database.
Eta Cassiopeiae A, Eta Cassiopeiae B and Eta Cassiopeiae C in the SIMBAD Astronomical Database.
Eta Cassiopeiae in Solstation.
Eta Cassiopeiae in Stars.
Eta Cassiopeiae in Wikipedia.

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This document was last modified 2011-01-12 01:32:49 UTC.
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