Capricornus (Pronounciation:Cap-re-corn-us, Abbrev:Cap, Latin:Capricorni) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Capricornus takes up 413.947 sq. degrees of the night sky which equates to 1% of the night sky. The constellation gets its name as it name means The Sea Goat . The constellation is one of the original constellations that was devised by the Ancient Greco-Egyptian astronomer Ptolemy who lived between 90 A.D. and 168 A.D.
Capricornus is a member constellation of the Zodiac grouping, a group of 12 star signs that astrologers use to predict someones future based on their date of birth and which constellation appeared when the Sun set. The Zodiac year may be divided up equally between the twelve signs but when they appear in the night sky no longer conforms to the Zodiac calendar. Capricornus is an equatorial constellation that can be seen by countries nearest the Equator.
The brightest star in Capricornus is Deneb Algedi. There are 16 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site. There is a dedicated page for exoplanets in Capricornus. For a list of named stars, that is stars that don't start HD or HIP, please visit Capricornus Star List Page.
The number of stars that have been catalogued as part of the Hipparcos Star Catalogue from Capricornus is 964. The number of stars that are of magnitude 6.0 or lower in the constellation is 48. The number of stars in the constellation that make up the outline is 13.
There are 1 deep space objects that were identified by Charles Messier in this constellation. There are no non-Messier deep space objects in this constellation that are covered at present on this site.
The nearest star to Earth is HIP 103039 which is roughly about 18.63 Light Years from the Earth. The nearest star to the Earth with an exoplanet is HD 204941 which is about 87.75 Light Years. The furthest star that can be located in the constellation is HIP 107037 which is located about 65232.67 Light Years away from the Sun. The furthest figure is derived from either the 1997 or 2007 Hipparcos star catalogue parallax figure and it has been known to produce distances that are wrong.
The dimmest star that can be seen in Capricornus with the naked eye is 47 Capricorni. The dim star has an apparent magnitude of 6. The dimmest star that a person is able to see with their naked eye is 6.0 magnitude based on the table in the reference. Ref: University of Michigan
The caveat of these stars are that they are catalogued on this site. If you know of a star that is nearer or further then do let me know in the comments and I'll add it to the site. The stars mentioned are from the Hipparcos catalogue or have been added because of their special status.
Usually referred to as Amalthea, the goat that suckled the infant Zeus when his mother Rhea saved her son from Cronos, his father. Another story has Pan, the goat god who was attacked by Typhon, the sea monster. Pan dived into the water, the lower part turned into a fish but the top part remained a goat.
There are 15 Meteor Showers that occur during the year within this constellation based on information gathered from Adam Mickiewicz University (Poland). The ones listed as the ones I've been able to find a date range for. For others if you have the time, you can visit the AMU site, obtains the SL value then use IMO tables to calculate the date. A lot of the Meteor Showers are weak and you need to do a lot of stargazing to spot them.
|Name||Activity||Peak Activity||Closest Star|
|Alpha Scorpiids||21 Apr- 26 May||15-May||Antares|
|Is a Zodiac Sign||Yes|
|Brightest Star||Deneb Algedi|
|Area||413.947 sq. deg.|
|Percentage of Night Sky||1%|
|Site Exoplanet Count||16|
|Meteor Shower Count||15|
|Nearest Star||HIP 103039|
|Nearest Star with Exoplanet(s)||HD 204941|
|Dimmest Star||47 Capricorni|
|Furthest Star||HIP 107037|
|Bright Star Count||48|
|Hipparcos Star Count||964|
|Main Star Count||13|
|Messier Deep Space Object Count||1|
|*Non-Messier Deep Space Object Count||0|
|Bordering / Neighbouring / Surrounding Constellations||Aquarius|
*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.
The map was generated using Night Vision, an awesome free application by Brian Simpson.
|Messier 30 (NGC7099)||Globular Cluster||27.8-31 kly||-23:11||21h 40m 4|
Alpha Scorpiids can sometimes be misspelt as Alpha-Scorpids with just one i in the second name. It is definately two i`s because if you look up Antares, it is noted as being Alpha Scorpii from what the meteor shower gets its name from.
It is a faint and small meteor shower and if you plan to spend much time watching for them, you`ll probably be disappointed as they only appear three every hour. If you do decide to look out for them, good luck.
The source of the meteor shower is an asteroid whose journey take in towards the Sun then out towards Jupiter before coming back in again before actually reaching the gas giant. The picture below was generated using N.A.S.A. page and shows the path.DisplayImage("asteroids/2004bz74.png","Diagram showing the path of 2004 BZ74 asteroid, the alledge source of the Alpha-Scorpiids");
|Associated Comet||2004 BZ74?|
|Max Activity Date||15 May|
|Activity Period||21 Apr- 26 May|
|Zenith Hourly Rate||3|