- Double Stars (Ari) -

And (31) Cep (13) CVn (2) Her (12) Ori (8) Tri (5)
Aql (9) Cet (1) Cyg (19) Leo (11) Peg (16) UMa (9)
Ari (8) CMa (1) Del (2) LMi (4) Per (18) UMi (1)
Aur (25) Cnc (4) Dra (8) Lyn (11) Psc (7) Vir (6)
Boo (8) Com (1) Equ (5) Lyr (8) Ser (3)
Cam (5) CrB (4) Eri (1) Mon (1) Sex (1)
Cas (17) Crv (1) Gem (18) Oph (1) Tau (11)

1 Ari (**)

Name: 1 Ari, STF174
Type: **
Constellation: Ari
Coordinates: 01h50m08.60s / +22°16'29.50"

Components:
m1 m2 ρ θ Year
6.3 7.2 2.9" 165° 2018
63mm f/13.3, 46x, Bortle 6-, SQM-L 19.0
Clearly split, but tight with noticeable difference in brightness.

70mm f/5.7, 80x
At 67x pretty tight pair, but separated with a clear difference in brightness. The primary component appeared in a hint of orange. At 80x easy to separate.

8" f/6, 100x, Bortle 4, NELM 5.9+, SQM-L 21.0
SQM-L 20.8: Nice double star with big difference in brightness.

30 Ari (**)

Name: 30 Ari
Type: **
Constellation: Ari
Coordinates: 02h37m00.52s / +24°38'50.00"

Components:
m1 m2 ρ θ Year
STFA5 AB 6.5 7.0 37.9" 275° 2018
RAO8 BC 7.0 11.0 0.6" 283° 2015
70mm f/5.7, 22x
AB: At 22x widely separated, striking with a rather small difference in brightness. A seemed a bit warmer in color compared to B with a hint of orange. At 44x, both seemed slightly orange with very little difference in color.

gamma Ari (**)

Name: gamma Ari, STF180
Type: **
Constellation: Ari
Coordinates: 01h53m31.76s / +19°17'38.60"

Components:
m1 m2 ρ θ Year
AB 4.5 4.6 7.4" 2018
8" f/6, 80x, Bortle 3-, SQM-L 21.3
Nice, obvious double star. Both components have similar brightness and appeared white.

H5 12 (**)

Name: H5 12, 9 Ari, lambda Ari
Type: **
Constellation: Ari
Coordinates: 01h57m55.71s / +23°35'45.80"

Components:
m1 m2 ρ θ Year
AB 4.8 6.7 37.3" 48° 2018
70mm f/5.7, 15x, Bortle 6-
Easy to split with large distance and difference in brightness.

STF178 (**)

Name: STF178
Type: **
Constellation: Ari
Coordinates: 01h52m02.54s / +10°48'38.10"

Components:
m1 m2 ρ θ Year
8.2 8.2 3.0" 206° 2016
63mm f/13.3, 67x, Bortle 6-, SQM-L 19.0
Clearly split, tight, apparently equally bright components.

70mm f/5.7, 100x, Bortle 7+, SQM-L 18.8
Split with equally bright components.

STF212 (**)

Name: STF212
Type: **
Constellation: Ari
Coordinates: 02h06m14.96s / +25°06'31.00"

Components:
m1 m2 ρ θ Year
8.3 8.7 1.9" 162° 2018
63mm f/13.3, 168x, Bortle 6-, SQM-L 19.0
Not split, but partially seen as an '8'. Overall the double star appeared rather faint and both components seemed to be similarly bright.

70mm f/5.7, 128x, Bortle 7+, SQM-L 18.8
Barely split with slight difference in brightness.

STF291 (**)

Name: STF291
Type: **
Constellation: Ari
Coordinates: 02h41m06.59s / +18°48'00.70"

Components:
m1 m2 ρ θ Year
AB 7.7 7.5 3.4" 118° 2017
AC 7.7 9.5 65.5" 242° 2015
70mm f/5.7, 57x
AB: At 44x almost, at 57x clearly split, but still very tight with rather small difference in brightness.

STF311 (**)

Name: STF311, pi Ari, 42 Ari
Type: **
Constellation: Ari
Coordinates: 02h49m17.55s / +17°27'51.50"

Components:
m1 m2 ρ θ Year
AB 5.3 8.0 3.2" 119° 2012
70mm f/5.7, 133x
The companion is visible as elongated, non-condensed brightening in the first diffraction ring of the primary component.