- Double Stars (Equ) -

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 (24)
Boo (12) Com (8) Equ (5) LMi (6) Per (18) UMi (1)
Cam (10) CrB (4) Eri (1) Lyn (18) Psc (7) Vir (6)
Cas (17) Crv (1) Gem (19) Lyr (8) Ser (2)

STF 2737 (**)
Name: STF2737, epsilon Equ, 1 Equ
Type: **
Constellation: Equ
Coordinates: 20h59m04.54s / +04°17'37.80"

Components:
m1 m2 ρ θ Year
AB 6m0 6m3 0.2" 281° 2018
AD 6m0 13m1 69.3" 293° 2013
AB-C 5m3 7m0 10.6" 67° 2018

../images/binary-star-orbits/STF2737-AB-orbit.jpg

Robert Zebahl
70mm f/5.7, 22x, Bortle 6-
AB-C: At 22x well separated, but still relatively close together with a clear difference in brightness. At 44x AB looked rather white. The color of C was not apparent.

STF 2742 (**)
Name: STF2742
Type: **
Constellation: Equ
Coordinates: 21h02m12.51s / +07°10'47.30"

Components:
m1 m2 ρ θ Year
7m4 7m6 2.9" 215° 2017
Robert Zebahl
70mm f/5.7, 57x, Bortle 6-
At 44x almost split with slight difference in brightness. At 57x split, but tight.

STF 2765 (**)
Name: STF2765
Type: **
Constellation: Equ
Coordinates: 21h10m59.31s / +09°32'57.90"

Components:
m1 m2 ρ θ Year
AB 8m5 8m5 2.9" 82° 2018
AC 8m5 14m2 44.2" 167° 2015
Robert Zebahl
70mm f/5.7, 80x, Bortle 6-
AB: At 44x pretty faint, clearly elongated, notched. At 57x almost separated. At 80x and 100x clearly separated, rather tight, matched.

STF 2786 (**)
Name: STF2786
Type: **
Constellation: Equ
Coordinates: 21h19m39.36s / +09°31'30.30"

Components:
m1 m2 ρ θ Year
7m5 8m2 2.8" 189° 2016
Robert Zebahl
70mm f/5.7, 57x, Bortle 6-
At 44x elongated, slightly notched. At 57x barely split with visible, but little difference in brightness.

STF 2793 (**)
Name: STF2793
Type: **
Constellation: Equ
Coordinates: 21h25m05.66s / +09°23'02.60"

Components:
m1 m2 ρ θ Year
AB-C 7m4 9m0 26.4" 241° 2014
Robert Zebahl
70mm f/5.7, 22x, Bortle 6-
At 22x easily separable with relatively large angular distance. C component much fainter. At 44x AB appeared white-yellowish, C somewhat reddish.