- Double Stars (Vul) -

And (32) Cep (13) CVn (11) Her (15) Mon (1) Sex (2)
Aql (9) Cet (1) Cyg (25) Hya (4) Oph (1) Tau (11)
Ari (8) CMa (1) Del (4) Leo (21) Ori (8) Tri (4)
Aur (27) Cnc (10) Dra (11) Lib (1) Peg (16) UMa (36)
Boo (19) 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 (11) Ser (3) Vul (3)

STF 2525 (**)
Name: STF2525
Type: **
Constellation: Vul
Coordinates: 19h26m33.71s / +27°19'21.90"

Components:
m1 m2 ρ θ Year
AB 8m2 8m4 2.1" 289° 2018

../images/binary-star-orbits/STF2525-AB-orbit.jpg

Robert Zebahl
152mm f/5.9, 100x, Bortle 6, SQM-L 19.6
2020-06-24: At 49x slightly elongated, at 69x just separated with visible difference in brightness. At 100x nice view with clear separation and slight difference in brightness, but no visible colors.

STF 2655 (**)
Name: STF2655
Type: **
Constellation: Vul
Coordinates: 20h14m04.52s / +22°13'21.50"

Components:
m1 m2 ρ θ Year
AB 7m9 8m0 6.2" 3° 2017
AC 7m9 10m1 60.5" 154° 2016
Robert Zebahl
70mm f/5.7, 31x
AB: 2020-07-29: At 22x clearly visible as '8' and almost separated. At 31x well separated with still very close and almost equally bright components. Color was not visible.

STF 2769 (**)
Name: STF2769
Type: **
Constellation: Vul
Coordinates: 21h10m32.07s / +22°27'16.70"

Components:
m1 m2 ρ θ Year
AB 6m7 7m4 18.2" 300° 2018
Robert Zebahl
B 16x70, Bortle 6, SQM-L 19.2
2020-08-19: The double star is located in a rather poor environment and is therefore very conspicuous. Clearly visible brightness difference with rather small separation. The primary component appeared white-bluish and thus quite cool, while the companion showed a warm hue (yellowish/orange?).