The image of Sirius A and Sirius B taken by Hubble Space Telescope A – bigger, B – smaller white dwarf (Credit:NASA)An artist impresion of Sirius A and Sirius B, A – bigger, B – smaller white dwarf (Credit:NASA)

Discover great deals on the many top brand items available only on eBay!


This site contains sponsored affiliate links.

Sirius

Sirius (α CMa / α Canis Majoris / Alpha Canis Majoris) is the brightest star in the nighttime sky, with a visual apparent magnitude of −1.46. It is located in the constellation Canis Major. more...

HomeHome
Accessories & CablesAccessories & Cables
AmplifiersAmplifiers
CD Players & RecordersCD Players & Recorders
Cassette DecksCassette Decks
CrossoversCrossovers
DVD Players & Recorders DVD Players & Recorders
Digital Music...Digital Music...
Digital Video Recorders, PVRDigital Video Recorders, PVR
EqualizersEqualizers
Headphones, HeadsetsHeadphones, Headsets
Home Audio MiscHome Audio Misc
Home Theater ProjectorsHome Theater Projectors
Home Theater in a Box Home Theater in a Box
KaraokeKaraoke
MiniDisc PlayersMiniDisc Players
OtherOther
PreamplifiersPreamplifiers
ProcessorsProcessors
RadiosRadios
ReceiversReceivers
Remote ControlsRemote Controls
Satellite Radio Satellite Radio
Satellite Radio AccessoriesSatellite Radio Accessories
SiriusSirius
Complete SystemsComplete Systems
Other Products & KitsOther Products & Kits
Receivers OnlyReceivers Only
XM RadioXM Radio
Satellite, Cable TVSatellite, Cable TV
Shelf, Compact SystemsShelf, Compact Systems
Speakers & SubwoofersSpeakers & Subwoofers
Televisions TVTelevisions TV
Tuners, AM/FMTuners, AM/FM
TurntablesTurntables
VCRsVCRs
Vintage ElectronicsVintage Electronics
Wholesale LotsWholesale Lots

Its name comes from the Latin sīrius, from Greek σείριος (seirios, "glowing" or "scorcher"). As the major star of the "Big Dog" constellation, it is often called the "Dog Star".

Sirius can be seen from every inhabited region of the Earth's surface and, in the Northern Hemisphere, is known as a vertex of the Winter Triangle.

At a distance of 2.6 pc or 8.57 light years (50.3 trillion miles), Sirius is also one of the nearest stars to Earth. The best time of year to view it is around January 1, when it reaches the meridian at midnight.

It is a main sequence star of spectral type A0 or A1 and has a mass about 2.4 times that of the Sun.

It is also known by the Latin name Canicula ("little dog") and as الشعرى aš-ši’rā in Arabic astronomy, from which the alternate name Aschere derives.

In Chinese culture, the star is known as 天狼星 (literially, heavenly wolf star).

Its closest large neighbour star except Sirius B is Procyon, 1.61 pc or 5.24 ly away.

In 1909, Ejnar Hertzsprung suggested that Sirius was part of the Ursa Major Moving Group; however, more recent research by Jeremy King et al. at Clemson University in 2003 questions whether that is true, since the two components of Sirius appear to be too young.

Binary system

In 1844 Friedrich Wilhelm Bessel deduced that Sirius was actually a binary star. In 1862 Alvan Graham Clark discovered the companion, which is called Sirius B, or affectionately "the Pup". The visible star is now sometimes known as Sirius A. The two stars orbit each other with a separation of about 20 AU and a period of close to 50 years.

In 1915 astronomers at the Mount Wilson Observatory determined that Sirius B was a white dwarf, the first to be discovered.

Interestingly, this means that Sirius B must have originally been by far the more massive of the two, since it has already evolved off the main sequence. Robert Hanbury Brown measured the diameter of Sirius for the first time in 1956. In 2005, using the Hubble Space Telescope, astronomers determined Sirius B to be 12,000km (7,600 miles) in diameter, with a mass that is 98% of the Sun.

History

Historically, many cultures have attached special significance to Sirius. Sirius was worshipped as Sothis in the valley of the Nile long before Rome was founded, and many ancient Egyptian temples were oriented so that light from the star could penetrate to their inner altars. The Egyptians based their calendar on the heliacal rising of Sirius, which occurred just before the annual flooding of the Nile and the Summer solstice. In Greek mythology, Orion's dog became Sirius. The Greeks also associated Sirius with the heat of summer: they called it Σείριος Seirios, often translated "the scorcher." This also explains the phrase "dog days of summer".

Read more at Wikipedia.org


[List your site here Free!]

Sirius Xm Satellite Radio Receiver Xact Stream Jockey Xtr1 w/ Car & Home Kit NewSirius Xm Satellite Radio Receiver Xact Stream Jockey Xtr1 w/ Car & Home Kit New $45.00 Sirius Satellite Radio S50 Personal Satellite Radio + Car KitSirius Satellite Radio S50 Personal Satellite Radio + Car Kit $29.99
Sirius Xm StarMate 5 St5 Satellite Radio Receiver Dock Brand New In Open BoxSirius Xm StarMate 5 St5 Satellite Radio Receiver Dock Brand New In Open Box $28.99 Sirius StarMate 4 St4-Tk1R Satellite Radio Vehicle Kit - Tested - WorksSirius StarMate 4 St4-Tk1R Satellite Radio Vehicle Kit - Tested - Works $24.99
Sirius Satellite Radio InV2 New Open BoxSirius Satellite Radio InV2 New Open Box $29.95 Sirius Stiletto 100 Sl100Pk1 Satellite Radio Bundle “New Sealed” ~free shipping~Sirius Stiletto 100 Sl100Pk1 Satellite Radio Bundle “New Sealed” ~free shipping~ $99.99
Sirius Satellite Radio Stratus 5 Dock and Play Radio & Vehicle Car Kit Sv5Tk1Sirius Satellite Radio Stratus 5 Dock and Play Radio & Vehicle Car Kit Sv5Tk1 $19.99 Sirius Stratus 5 Satellite Radio Receiver Sv5 Radio Sv5Tk1 Receiver Only newSirius Stratus 5 Satellite Radio Receiver Sv5 Radio Sv5Tk1 Receiver Only new $19.88
Sirius Satellite Radio Uc8 Car Cradle for Sportster, Starmate, Stratus Brand NewSirius Satellite Radio Uc8 Car Cradle for Sportster, Starmate, Stratus Brand New $19.95 Sirius satellite radio Sportster 5 w/ Vehicle Dock Owner’s Manual VgcSirius satellite radio Sportster 5 w/ Vehicle Dock Owner’s Manual Vgc $29.94
New Sirius Starmate Replay Receiver & Car Kit St2 Xm Satellite Radio with RemoteNew Sirius Starmate Replay Receiver & Car Kit St2 Xm Satellite Radio with Remote $99.99 Sirius Stiletto 2 Sl2 Portable Satellite Radio Mp3 Player And Dock - UntestedSirius Stiletto 2 Sl2 Portable Satellite Radio Mp3 Player And Dock - Untested $115.95
New ListingSirius Xm Starmate 4 Satellite Radio Receiver & Vehicle Kit St4Tk1 New Open BoxNew ListingSirius Xm Starmate 4 Satellite Radio Receiver & Vehicle Kit St4Tk1 New Open Box $19.99 Polk Audio Sr-H1000 Sirius Satellite Radio Tuner Lifetime Subscription H. SternPolk Audio Sr-H1000 Sirius Satellite Radio Tuner Lifetime Subscription H. Stern $199.00
Xm / Sirius Satellite Radio Sirius Connect Gm Compatible 2003-08 Sir-Gm1 TunerXm / Sirius Satellite Radio Sirius Connect Gm Compatible 2003-08 Sir-Gm1 Tuner $45.99 Universal SiriusXm Satellite Radio Home Dock Sxhd1(A) for Sirius & XmUniversal SiriusXm Satellite Radio Home Dock Sxhd1(A) for Sirius & Xm $19.89
New ListingSirius Stratus 6 Sdsv6V1 Satellite Radio Receiver & Sxabb1 Portable Speaker DockNew ListingSirius Stratus 6 Sdsv6V1 Satellite Radio Receiver & Sxabb1 Portable Speaker Dock $124.99 Sirius Satellite Radio Stratus 5 Dock & Play Radio + Complete Vehicle KitSirius Satellite Radio Stratus 5 Dock & Play Radio + Complete Vehicle Kit $22.00
Sirius Satellite Radio Receiver Sdsv6 Sirius Stratus 6 & Vehicle KitSirius Satellite Radio Receiver Sdsv6 Sirius Stratus 6 & Vehicle Kit $30.00 Sirius Xm Satellite Radio Receiver Xact Stream Jockey 2 Ii Xtr2Ck w/ Car Kit NobSirius Xm Satellite Radio Receiver Xact Stream Jockey 2 Ii Xtr2Ck w/ Car Kit Nob $17.99
SiriusXm - Roady Bt Satellite Radio - BlackSiriusXm - Roady Bt Satellite Radio - Black Tap item to see current price Sirius Sp5 Satellite Radio Receiver W/ Remote And Oem Power Supply+AnttennaSirius Sp5 Satellite Radio Receiver W/ Remote And Oem Power Supply+Anttenna $56.95
Sirius Sportster 4 Satellite Radio & Vehicle Kit - Sp4-Tk1 - Car Reciever XmSirius Sportster 4 Satellite Radio & Vehicle Kit - Sp4-Tk1 - Car Reciever Xm $29.99 New Sirius Xm Xdpiv1 PowerConnect Universal Car Dock for Onyx Plus ,Edge + MoreNew Sirius Xm Xdpiv1 PowerConnect Universal Car Dock for Onyx Plus ,Edge + More $18.99
Sirius Starmate 4 satellite radio receiver (Untested)Sirius Starmate 4 satellite radio receiver (Untested) $29.49 SiriusXm Sxv300v1 Satellite Radio Vehicle Tuner Kit *New* Sxv300SiriusXm Sxv300v1 Satellite Radio Vehicle Tuner Kit *New* Sxv300 $44.90
SiriusXm Sxpl1H1 Onyx Plus Satellite Radio with Home Kit Dock - Works!SiriusXm Sxpl1H1 Onyx Plus Satellite Radio with Home Kit Dock - Works! $25.00 New ListingSirius Satellite Radio Sportster 5 Sp57K1 Kit (Great Conditions Comes With All)New ListingSirius Satellite Radio Sportster 5 Sp57K1 Kit (Great Conditions Comes With All) $43.89
(W) Sirius Xm Radio Sxezr1V1 Onyx Ezr Vehicle Kit Model: Sxezr1V1 [New](W) Sirius Xm Radio Sxezr1V1 Onyx Ezr Vehicle Kit Model: Sxezr1V1 [New] $39.99 Sirius Satellite Radio: Starmate Ultra Compact Satellite Radio Receiver (St1R)Sirius Satellite Radio: Starmate Ultra Compact Satellite Radio Receiver (St1R) $30.99
New SiriusXm In-Dash Connect Vehicle Tuner Sxv300V1 - Integrate Satellite RadioNew SiriusXm In-Dash Connect Vehicle Tuner Sxv300V1 - Integrate Satellite Radio $44.89 SiriusXm Starmate 4 St4-Tk1 For Sirius Car & Home Satellite Radio ReceiverSiriusXm Starmate 4 St4-Tk1 For Sirius Car & Home Satellite Radio Receiver $24.90
SiriusXm Xez1V1 Onyx Ez Satellite Radio with Vehicle Kit New Opened BoxSiriusXm Xez1V1 Onyx Ez Satellite Radio with Vehicle Kit New Opened Box $25.00 SiriusXm Sxpl1V1 Satellite Radio Onyx Plus Dock & Play Vehicle Kit New Open BoxSiriusXm Sxpl1V1 Satellite Radio Onyx Plus Dock & Play Vehicle Kit New Open Box $39.99
Activated Sirius Xm Audiovox Xpress Replay Radio Only Active Subscription ReadActivated Sirius Xm Audiovox Xpress Replay Radio Only Active Subscription Read $72.15 Sirius Sp5 Sportster 5 Satellite Radio Replacement Receiver w/ RemoteSirius Sp5 Sportster 5 Satellite Radio Replacement Receiver w/ Remote $44.99
Brand New Sirius Sportster Replay Sp-Tk2 Satellite Radio Car and Home BoatBrand New Sirius Sportster Replay Sp-Tk2 Satellite Radio Car and Home Boat $44.00 SiriusXm Satellite Radio In-Dash Receiver (Subscription Sold Separate)SiriusXm Satellite Radio In-Dash Receiver (Subscription Sold Separate) $42.99
SiriusXm Sxv300V1 Connect Vehicle Tuner Kit For Satellite Radio, SealedSiriusXm Sxv300V1 Connect Vehicle Tuner Kit For Satellite Radio, Sealed $38.99 SiriusXm Sxabb2 Portable Speaker Dock Satellite Radio / Receiver *Please Read*SiriusXm Sxabb2 Portable Speaker Dock Satellite Radio / Receiver *Please Read* $49.00
Sirius Sportster Sv3 Satellite Radio Receiver - Meticulous Nib ConditionSirius Sportster Sv3 Satellite Radio Receiver - Meticulous Nib Condition $39.99 New Sirius Sportster Sp4 Sirius Satellite Radio Replacement Receiver | Free ShipNew Sirius Sportster Sp4 Sirius Satellite Radio Replacement Receiver | Free Ship $39.77
Sirius Xm Starmate 5 Satellite Radio Receiver & Vehicle Kit Sdst5V1 + $50 CardSirius Xm Starmate 5 Satellite Radio Receiver & Vehicle Kit Sdst5V1 + $50 Card $59.99 Sirius Stratus 6 Activated W/Stern Satellite Radio Sv6 Receiver Only ReadSirius Stratus 6 Activated W/Stern Satellite Radio Sv6 Receiver Only Read $104.95
Sirius Stiletto 2 Sl2 Portable Satellite Radio Mp3 Player - Tested/WorkingSirius Stiletto 2 Sl2 Portable Satellite Radio Mp3 Player - Tested/Working $99.99 Sirius Satellite Radio Sp4 Tuner Active Subscription W/Stern ReadSirius Satellite Radio Sp4 Tuner Active Subscription W/Stern Read $114.95
Sirius Starmate 5-Xm/Satellite Radio Receiver/Vehicle Kit-New/Open BoxSirius Starmate 5-Xm/Satellite Radio Receiver/Vehicle Kit-New/Open Box $25.00 Sirius Satellite Radio, Plug & Play Satellite Radio Boombox, Lifetime SubsTuner!Sirius Satellite Radio, Plug & Play Satellite Radio Boombox, Lifetime SubsTuner! $74.99
Sirius Plug & Play Satellite Radio Home Kit Model Suph1 Brand NewSirius Plug & Play Satellite Radio Home Kit Model Suph1 Brand New $19.99 Sirius Sportster Sp4 Car Satellite Radio Receiver With Supv1, Remote & Extras👀Sirius Sportster Sp4 Car Satellite Radio Receiver With Supv1, Remote & Extras👀 $49.99
Activated Sirius Xm Xact Xtr3 Satellite Radio Receiver 100s+ active channelsActivated Sirius Xm Xact Xtr3 Satellite Radio Receiver 100s+ active channels $55.00 Activated Sirius Xm Onyx Ezr Portable Radio Only - Active Subscription ReadActivated Sirius Xm Onyx Ezr Portable Radio Only - Active Subscription Read $83.88
Official Sirius Xm Onyx Ez Xez1 Satellite Radio Receiver Universal ReplacementOfficial Sirius Xm Onyx Ez Xez1 Satellite Radio Receiver Universal Replacement $17.99 Sirius Xm Satellite Radio Starmate 5 St5 Receiver OnlySirius Xm Satellite Radio Starmate 5 St5 Receiver Only $24.99
Sirius Sr-H1000 Satellite Radio Receiver/Tuner Base Unit OnlySirius Sr-H1000 Satellite Radio Receiver/Tuner Base Unit Only $59.95 New ListingSirius Xact Xtr1 Stream Satellite Radio Receiver W/Antenna & Power AdapterNew ListingSirius Xact Xtr1 Stream Satellite Radio Receiver W/Antenna & Power Adapter $26.66
New ListingSirius Satellite Radio Receiver & Vehicle Car Kit New in Open Box Sv2-Tk1New ListingSirius Satellite Radio Receiver & Vehicle Car Kit New in Open Box Sv2-Tk1 $24.99 Sirius Stratus 5 Sv5 Satellite Radio replace Receiver OnlySirius Stratus 5 Sv5 Satellite Radio replace Receiver Only $11.99
Sirius Xm Audiovox 136-4345 X Press Satellite Radio Receiver (Includes Dock)Sirius Xm Audiovox 136-4345 X Press Satellite Radio Receiver (Includes Dock) $10.95 Sirius SiriusXm Roady Bt Vehicle Satellite Radio - RoadyBt Sxvrbt1Sirius SiriusXm Roady Bt Vehicle Satellite Radio - RoadyBt Sxvrbt1 $79.99
Click to see more Sirius items at www.ebay.com
Prices current as of last update, 07/23/25 2:20pm.

See also...
Complete Systems, Sirius, Satellite Radio
Other Products & Kits, Sirius, Satellite Radio
Receivers Only, Sirius, Satellite Radio

Home Contact Resources Exchange Links ebay