Home

About

Observations - Hints

Observations

Sketches

Worthwhile Regions of the Sky

Skyguide

Contact

deDeutsch

Last update: 2018-09-23

VdS FG

- Double Stars (UMa) -

And (7) Cas (11) CVn (2) Her (2) Ori (7) UMa (3)
Aql (4) Cep (3) Cyg (5) Leo (1) Peg (4)
Ari (4) CMa (1) Del (2) LMi (4) Per (1)
Boo (4) Com (1) Dra (1) Lyr (2) Psc (1)
Cam (2) CrB (3) Gem (2) Oph (1) Tau (5)

41 Lyn (**)

Name: 41 Lyn, S598
Type: **
Constellation: UMa
Coordinates: 09h28m39.99s / +45°36'06.50"
Components: AB / v5.5 mag / v7.8 mag / 69.9" / 161° / 2015
This star has the designation 41 Lyn but is assigned to UMa. At the time, when Flamsteed numbered the stars, the constellation boundaries were not exactly defined. Another example is 10 UMa, which is located in Lyn today.

B 40mm, 8x, Bortle 7, NELM 5.0, SQM-L 19.2
Fairly well split with fainter component.

STF1275 (**)

Name: STF1275
Type: **
Constellation: UMa
Coordinates: 08h51m26.19s / +57°31'38.10"
Components: AB / v8.7 mag / v8.9 mag / 1.9" / 198° / 2015
70mm f/5.7, 100x
At 100x and 150x not permanently split. Components very close together.

xi UMa (**)

Name: xi UMa, 53 UMa, STF1523, Alula Australis
Type: **
Constellation: UMa
Coordinates: 11h18m10.90s / +31°31'45.00"
Components: AB / v4.3 mag / v4.8 mag / 1.9" / 164° / 2017
70mm f/5.7, 100x, Bortle 6
Very close together with similar brightness. At first glance seen as an '8', looking closer I partly split both components. Similar view also at 128x.

120mm f/5, 168x, Bortle 6, SQM-L 19.1
Well split with slight difference in brightness.