- Double Stars (Com) -

And (32) Cep (13) CVn (4) Her (13) Mon (1) Sex (2)
Aql (9) Cet (1) Cyg (19) Hya (4) Oph (1) Tau (11)
Ari (8) CMa (1) Del (2) Leo (19) Ori (8) Tri (4)
Aur (27) Cnc (10) Dra (8) Lib (1) Peg (16) UMa (21)
Boo (12) Com (8) Equ (5) LMi (6) Per (18) UMi (1)
Cam (5) CrB (4) Eri (1) Lyn (16) Psc (7) Vir (6)
Cas (17) Crv (1) Gem (19) Lyr (8) Ser (2)

BGH 46 (**)

Name: BGH46
Type: **
Constellation: Com
Coordinates: 13h16m32.26s / +19°47'07.00"

Components:
m1 m2 ρ θ Year
AB 6m5 7m6 202.9" 58° 2015
Robert Zebahl
B 8x40
2020-04-05: Widely separated with well visible difference in brightness. A appeared slightly white-bluish, B darker in color and not clearly definable.

STF 1596 (**)

Name: STF1596, 2 Com
Type: **
Constellation: Com
Coordinates: 12h04m16.60s / +21°27'33.00"

Components:
m1 m2 ρ θ Year
6m2 7m5 3.7" 236° 2017
Robert Zebahl
70mm f/5.7, 100x
2020-04-04: At 44x almost separated, but clearly visible as figure '8'. At 57x just separated with clearly noticeable difference in brightness. At 100x easy to separate. Primary component appeared white-orange, companion rather greyish.

STF 1633 (**)

Name: STF1633
Type: **
Constellation: Com
Coordinates: 12h20m41.37s / +27°03'16.40"

Components:
m1 m2 ρ θ Year
7m0 7m1 8.9" 245° 2017
Robert Zebahl
70mm f/5.7, 22x
2020-04-04: At 22x beautiful pair of equally bright components at quite small separation. At 44x a slight color difference was visible: white-orange & white-bluish.

STF 1639 (**)

Name: STF1639
Type: **
Constellation: Com
Coordinates: 12h24m26.81s / +25°34'56.70"

Components:
m1 m2 ρ θ Year
AB 6m7 7m8 1.8" 323° 2018
AC 6m7 11m4 91.4" 159° 2015

../images/binary-star-orbits/STF1639-AB-orbit.jpg

Robert Zebahl
70mm f/5.7, 133x
AB: 2020-04-04: The double star is clearly elongated, with the fainter companion attached to the primary component.

STF 1657 (**)

Name: STF1657, 24 Com
Type: **
Constellation: Com
Coordinates: 12h35m07.76s / +18°22'37.40"

Components:
m1 m2 ρ θ Year
5m1 6m3 20.2" 272° 2018
Robert Zebahl
70mm f/5.7, 22x
2020-04-04: Splendid sight! Very nice difference in brightness and color: pale orange & grey-blue.

102mm f/11, 28x
Very beautiful view with moderate distance and difference in brightness. A: glossy, light orange, B: white- bluish.

8" f/6, 60x, Bortle 4, NELM 6m0, SQM-L 21.0
Well split with obvious difference in brightness. Fainter component appeared bluish, the brighter one slightly orange.

STF 1678 (**)

Name: STF1678
Type: **
Constellation: Com
Coordinates: 12h45m26.17s / +14°22'24.90"

Components:
m1 m2 ρ θ Year
7m2 7m7 37.5" 170° 2018
Robert Zebahl
B 8x40
2020-04-05: Clearly separated, but still quite close together with a fainter companion. Well visible difference in brightness without any detectable colors.

70mm f/5.7, 22x
2020-04-04: At 22x noticeable double star with slight difference in brightness. Primary component appeared white-yellowish, companion appeared slightly orange. The color impression was a little better visible at 44x.

STF 1685 (**)

Name: STF1685
Type: **
Constellation: Com
Coordinates: 12h51m54.80s / +19°10'19.90"

Components:
m1 m2 ρ θ Year
AB 7m3 7m8 16.0" 202° 2018
Robert Zebahl
70mm f/5.7, 22x
2020-04-04: Lovely sight! Beautifully separated with little difference in brightness. Together with two other brighter stars the double star forms an almost right-angled triangle. At 44x the primary component appears in pale orange, the companion rather grey-bluish.

../sketches/2020-04-04_stf1685.jpg

STFA 23 (**)

Name: STFA23, 32 Com
Type: **
Constellation: Com
Coordinates: 12h52m12.26s / +17°04'26.20"

Components:
m1 m2 ρ θ Year
AB 6m5 7m0 196.3" 51° 2015
AC 6m5 8m9 905.1" 262° 2001
Robert Zebahl
B 8x40
AB: 2020-04-05: Widely separated pair. The component A (32 Com) appeared slightly orange, the component B rather grey-bluish. Overall a beautiful sight. The double star is located right in the middle between the two bright stars 27 & 36 Com.