UPSA Object Registry
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* alf Cyg

Supergiant SIMBAD sg* A2Ia 781 papers
harvesting The full record is being pulled from the archives right now — measurement tables, the Gaia row, catalogue photometry. This page will fill itself in.
Right ascension
20h 41m 25.92s
Declination
+45° 16′ 49.2″
Galactic l, b
84.285, 1.998
Magnitude V
1.25
Parallax
2.31 mas
Redshift z
-1.634e-05
Radial velocity
-4.9 km/s
Proper motion
2.01, 1.85 mas/yr

Also known as

47 identifiers

2MASS J20412592+4516491* 50 CygADS 14172 AAG+45 1730* alf CygV* alf CygALS 11488BD+44 3541CCDM J20415+4517ACEL 5144CSI+44 3541 1EM* MWC 351FK5 777GC 28846GCRV 12971GEN# +1.00197345GSC 03574-03347HD 197345HIC 102098HIP 102098HR 7924IDS 20380+4455 AIRC +50337JP11 3264[KW97] 48-33LS III +45 15MCW 940N30 4579PLX 4935PLX 4935.00PMC 90-93 546PPM 60323RAFGL 2633ROT 3019SAO 49941SKY# 39204SV* ZI 1938TD1 27159TIC 195554360TYC 3574-3347-1UBV 17953UBV M 25099uvby98 100197345WDS J20414+4517AWEB 18466Deneb[HFE83] 1387

Provenance

where this card came from
ArchiveRead at (UTC)Record
Seeded from the bulk archive load; no per-object fetch yet.

Machine-readable: /api/v1/object/alf-cyg · Registry entry updated 2026-08-14.