44 Cygni with Reflection Nebula vdB 133
History
The reflection nebula vdB 133 (LBN 218) was discovered by Sidney van den Bergh on the Palomar Sky Survey photographic plates and included as No. 133 in his 1966 Catalog of Reflection Nebulae. [255]
Physical Properties
It is a dusty nebula with an angular diameter of about 10 arc minutes, which surrounds the variable binary star 44 Cygni and reflects its light. The components of 44 Cygni are 6.2 mag and 10.1 mag bright and 2.2 arc seconds apart. The main star is a yellow supergiant of spectral type F5Ib. Parallax measurements by the Gaia spacecraft showed a distance of 1240 pc (about 4000 light-years) and a motion with a velocity of about 20 km/s in our direction Northwest of vdB 133 is still the extensive H-II emission nebula LBN 219 of red glowing, ionized hydrogen gas. [145]
| Name | Type | RA (J2000.0) | Dec (J2000.0) | PM [mas/y] | Parall. [mas] | Rvel [km/s] | z | SP Type | Magnitudes | Identifiers |
|---|---|---|---|---|---|---|---|---|---|---|
| vdB 133 | * | 20h 30m 59s | +36° 56' 09" | -0.623 | 0.769 | -19.82 | -0.000066 | F5Ib | U 7.93; B 7.16; V 6.216; G 5.879742; R 6.9; I 4.64; J 4.296; H 3.926; K 3.654 | * 44 Cyg; * 44 Cyg A; ** AC 18A; 2MASS J20305922+3656091; ADS 13949 A; AG+36 2033; ALS 11399; BD+36 4105; BD+36 4105A; CCDM J20310+3656A; CSI+36 4105 1; GC 28551; GCRV 12823; GEN# +1.00195593; Gaia DR2 2057760376738256384; Gaia DR3 2057760376738256384; HD 195593; HD 195593A; HIC 101214; HIP 101214; HR 7847; IDS 20272+3636 A; IRAS 20290+3646; JP11 3249; LS II +36 82; PPM 85090; SAO 70135; SKY# 38824; TIC 16526139; TYC 2697-1634-1; UBV 17801; UCAC4 635-096831; VDB 133; WDS J20310+3656A; WEB 18284; WISE J203059.22+365609.1; WISEA J203059.29+365609.1; uvby98 100195593 |
| LBN 219 | HII | 20h 30m 00s | +37° 06' 00" | LBN 076.42-01.19; LBN 219 |
Finder Chart
The nebula vdB 133 is located in the eastern wing of Cygnus at the star 44 Cygni. On 29 July it is in opposition to the Sun and culminates at local midnight. In the months of January to December, this constellation is favourable for observation.
