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Libra Constellation

Libra (Pronounciation:Lib-rah, Abbrev:Lib, Latin:Librae) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Libra takes up 538.052 sq. degrees of the night sky which equates to 1.3% of the night sky. The constellation gets its name as it name means The Scales . 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.

Libra 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. Libra is an equatorial constellation that can be seen by countries nearest the Equator.

The brightest star in Libra is Zubeneschamali. There are 4 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site.

Libra Star and Deep Space Object Count

The number of stars that have been catalogued as part of the Hipparcos Star Catalogue from Libra is 1316. The number of stars that are of magnitude 6.0 or lower in the constellation is 49. The number of stars in the constellation that make up the outline is 5.

There are no 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.

Stars of Interest

The nearest star to Earth is Gliese 570 which is roughly about 19.05 Light Years from the Earth. The nearest star to the Earth with an exoplanet is Gliese 570 which is about 19.05 Light Years. The furthest star that can be located in the constellation is HIP 76117 which is located about 326163.3 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 Libra with the naked eye is 47 Librae. The dim star has an apparent magnitude of 5.95. 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.

Not associated with any particular legend or mythology of the Greeks.

Items of Interest

One of the most intriguing stars in the cosmos can be found in this constellation. That star is Zubeneschamali, the brightest star in the constellation although it only has the Beta designation. The star according to some people is Green but others discount the possibility that such a star can be green. Colours are normally Red, Orange, Yellow, White, Blue and including variations of those colours. Have a look and see what you think. If it is green then its the most unique star so far.

Oldest Star in the Milky Way

Libra has some of the oldest stars in the the milky way, one of the leading candidates for the title is Methuselah Star which had been calculated as being older than the universe itself. However, it can't be older than the actual universe so it is probably created just after the birth of the galaxy. It had been theorized that the star is from another galaxy that was consumed by out galaxy. Ref: Space.

There are no major meteor showers that radiate from within this constellation.

Libra Facts


NameLibra
AbbreviationLib
Is a Zodiac Sign Yes
Brightest StarZubeneschamali
Area538.052 sq. deg.
Percentage of Night Sky1.3%
Size Position29th
Hemisphere Equatorial
Site Exoplanet Count4
Meteor Shower Count8
Nearest StarGliese 570
Nearest Star with Exoplanet(s)Gliese 570
Dimmest Star47 Librae
Furthest StarHIP 76117
Bright Star Count49
Hipparcos Star Count1316
Main Star Count5
Messier Deep Space Object Count0
*Non-Messier Deep Space Object Count0
Bordering / Neighbouring / Surrounding ConstellationsVirgo
Hydra
Centaurus
Lupus
Scorpius
Ophiuchus
Serpens

*Note: The number of Non-Messier Deep Space Object Count relates to how many are covered on this site not how many there are.


Libra Constellation Map


Libra Constellation Star Map

The map was generated using Night Vision, an awesome free application by Brian Simpson.

List of Stars with Exoplanets in Libra


StarDistance (Lt. Yrs.)Exoplanet CountDeclinationRight Ascension
Gliese 57019.051-21d 24` 40.614h 57m 27.35
HD 133131143.622-27d 50` 26.415h 03m 35.70
HD 141937105.351-18d 26` 10.015h 52m 17.49

List of Named Stars in Libra without Extrasolar Planets

As there's so many stars in the cosmos, not all the stars are listed here. The site has lots of stars not listed so if your star isn't listed and you know the Henry Draper or Hipparcos ID, type https://www.universeguide.com/star/ then followed by the HIPNNNNNN or HDNNNN where NNNNN is the number part of the name. The stars that I do list have either a traditional name, a bayer or other classification name.

StarDistance (Lt. Yrs.)DeclinationRight Ascension
10 Librae729.67-18d 21` 19.214h 51m 51.31
11 Librae218.61-02d 17` 55.914h 51m 01.02
12 Librae417.09-24d 38` 31.714h 54m 20.14
16 Librae87.75-04d 20` 45.914h 57m 11.06
17 Librae356.85-11d 09` 17.114h 58m 13.42
18 Librae310.04-11d 08` 37.914h 58m 53.64
2 Librae334.87-11d 42` 50.014h 23m 25.63
22 Librae373.18-16d 29` 03.615h 06m 49.10
23 Librae85.47-25d 18` 33.015h 13m 28.93
26 Librae799.42-17d 46` 06.715h 14m 33.77
28 Librae598.46-18d 09` 30.615h 20m 53.68
3 Librae662.93-25d 01` 42.814h 39m 21.99
30 Librae967.84-15d 08` 02.715h 23m 01.78
30 Serpentis176.21-03d 49` 06.715h 48m 56.81
33 Librae289.15-17d 26` 27.415h 29m 34.78
36 Librae318.21-28d 02` 48.915h 34m 37.31
37 Librae94.35-10d 03` 50.315h 34m 10.52
4 Librae497.20-24d 59` 51.814h 43m 13.57
41 Librae311.22-19d 18` 06.215h 38m 54.51
42 Librae382.37-23d 49` 05.015h 40m 16.91
47 Librae771.07-19d 22` 58.415h 55m 00.37
48 Librae467.95-14d 16` 45.515h 58m 11.38
49 Librae114.85-16d 31` 56.616h 00m 19.98
5 Librae1449.61-15d 27` 34.414h 45m 57.78
50 Librae489.73-08d 24` 40.816h 00m 47.64
Brachium288.38-25d 16` 54.715h 04m 04.26
Delta Librae293.58-08d 31` 08.215h 00m 58.39
Derakrab Borealis223.71-28d 08` 06.315h 37m 01.46
Epsilon Librae101.86-10d 19` 18.815h 24m 11.93
ES Librae378.38-13d 02` 21.115h 16m 48.59
FY Librae1315.17-12d 26` 15.214h 57m 46.54
HE 1523-0901-9 d 11` 3815h 26m 01.2
HM Librae1941.45-25d 10` 10.115h 27m 48.32
HR 5780399.22-09d 11` 00.115h 34m 26.53
Iota1 Librae379.70-19d 47` 29.915h 12m 13.31
Iota2 Librae227.93-19d 38` 50.815h 13m 19.22
Kappa Librae308.57-19d 40` 42.915h 41m 56.82
KU Librae77.23-16d 12` 32.914h 40m 31.17
Lambda Librae309.45-20d 10` 01.215h 53m 20.06
Methuselah Star190.07-10d 55` 57.915h 43m 03.76
Mu Librae237.90-14d 08` 56.314h 49m 19.09
Nu Librae695.44-16d 15` 24.315h 06m 37.62
Omicron Librae 184.80-15d 32` 54.215h 21m 01.36
Tau Librae366.89-29d 46` 39.715h 38m 39.38
Theta Librae168.47-16d 43` 46.615h 53m 49.48
Xi1 Librae336.95-11d 53` 54.014h 54m 22.91
Xi2 Librae549.10-11d 24` 35.014h 56m 46.11
Zeta1 Librae784.05-16d 42` 59.115h 28m 15.40
Zeta3 Librae508.04-16d 36` 34.015h 30m 40.39
Zeta4 Librae656.26-16d 51` 10.115h 32m 55.23
Zuben el Akrab163.16-14d 47` 22.415h 35m 31.54
Zuben Hakrabi149.21-15d 40` 21.615h 44m 04.42
Zubenelegenbi B75.80-16d 02` 29.814h 50m 52.78
Zubenelgenubi74.95-15d 59` 49.514h 50m 41.26
Zubeneschamali185.11-09d 22` 58.315h 17m 00.47

Libra Constellation's Star Breakdown


Type Breakdown


TypeDescriptionCount
FYellow-White 6,000 - 7,500k390
KLight Orange Star 3,700 - 5,200k373
GYellow 5,200 - 6,000k271
AWhite 7,500 - 10,000k151
MRed Dwarf Star <3,700k43
BBlue-White 10,500 - 30,000k33

Size Breakdown


TypeDescriptionCount
VMain Sequence377
IIINormal Giant301
IVSubgiant95
IIBright Giant5
IabIntermediate Luminous Supergiant2
IbLess Luminous Supergiant1

Breakdown of Dwarf Stars by Type


TypeDescriptionCount
sdsd Type SubDwarf Star1

Breakdown of Carbon Stars by Type


TypeDescriptionCount
CC-Type Carbon Star1
RR-Type Carbon Star1
SS-Type Carbon Star1


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