Sham

Sham

Datenbanklinks zu Sham

Stern
Sham
Beobachtungsdaten
Sternbild Pfeil
Rektaszension 19h 40m 5,8s
Deklination +18° 0′ 50″
Scheinbare Helligkeit 4,37m 
Typisierung
Spektralklasse G1II 
Astrometrie
Radialgeschwindigkeit 1,7 km/s
Entfernung  475 Lj
Absolute Helligkeit -1,44 mag
Eigenbewegung 
Rek.-Anteil: 15,09 mas/a
Dekl.-Anteil: -19,72 mas/a
Physikalische Eigenschaften
Radius 20 R 
Oberflächentemperatur 5400 K 
Andere Bezeichnungen
und Katalogeinträge
Flamsteed-Bezeichnung 5 Sagittae
Bonner Durchmusterung BD +17°4042
Bright-Star-Katalog HR 7479
Henry-Draper-Katalog HD 185758
SAO-Katalog SAO 105120[1]
Tycho-Katalog TYC 1606-2341-1[2]
Hipparcos-Katalog HIP 96757
Weitere Bezeichnungen Alsahm

Sham (auch Alsahm) ist der Eigenname des Sterns α Sagittae (Alpha Sagittae) und bedeutet ebenfalls „Pfeil“.

Sham ist ein gelber Riese, gehört der Spektralklasse G1 und der Leuchtkraftklasse II an und besitzt eine scheinbare Helligkeit von +4,4 mag. Er ist circa 475 Lichtjahre von der Erde entfernt.

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  • Sham — Sham, v. t. [imp. & p. p. {Shammed}; p. pr. & vb. n. {Shamming}.] 1. To trick; to cheat; to deceive or delude with false pretenses. [1913 Webster] Fooled and shammed into a conviction. L Estrange. [1913 Webster] 2. To obtrude by fraud or… …   The Collaborative International Dictionary of English

  • sham — /sham/, n., adj., v., shammed, shamming. n. 1. something that is not what it purports to be; a spurious imitation; fraud or hoax. 2. a person who shams; shammer. 3. a cover or the like for giving a thing a different outward appearance: a pillow… …   Universalium

  • Sham — (sh[a^]m), n. [Originally the same word as shame, hence, a disgrace, a trick. See {Shame}, n.] 1. That which deceives expectation; any trick, fraud, or device that deludes and disappoints; a make believe; delusion; imposture; humbug. A mere sham …   The Collaborative International Dictionary of English

  • sham — adj being a treatment or procedure that is performed as a control and that is similar to but omits a key therapeutic element of the treatment or procedure under investigation <sham surgery, in which doctors make an incision in a patient s knee …   Medical dictionary

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  • sham — (n.) 1670s, a trick, a hoax, a fraud, perhaps from sham, a northern dialectal variant of SHAME (Cf. shame) (q.v.). Sense of Something meant to be mistaken for something else is from 1728. The meaning in pillow sham (1721) is from the notion of… …   Etymology dictionary

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