- Double Stars (And) -

And (32) Cep (13) CVn (4) Her (13) Mon (1) Sex (1)
Aql (9) Cet (1) Cyg (19) Hya (1) Oph (1) Tau (11)
Ari (8) CMa (1) Del (2) Leo (14) Ori (8) Tri (4)
Aur (27) Cnc (10) Dra (8) Lib (1) Peg (16) UMa (11)
Boo (8) Com (1) Equ (5) LMi (4) 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)

59 And (**)

Name: 59 And, STF222
Type: **
Constellation: And
Coordinates: 02h10m52.83s / +39°02'22.40"

Components:
m1 m2 ρ θ Year
6m0 6m7 16.5" 36° 2018
Robert Zebahl
B 8x40, Bortle 7, SQM-L 19.0
Separated, but very tight. I used a tripod.

120mm f/5, 18x, Bortle 6, SQM-L 19.3
Well split with noticeable difference in brightness.

8" f/6, 100x, Bortle 4, NELM 6m0, SQM-L 20.9
Conditions in the target region: SQM-L 20.4
Nice and evident double star, easy to split. About 12 arcminutes NE there is NGC828 (v12.3m),

164 And (**)

Name: 164 And, STF79
Type: **
Constellation: And
Coordinates: 01h00m03.56s / +44°42'47.70"

Components:
m1 m2 ρ θ Year
6m0 6m8 7.9" 195° 2018
Robert Zebahl
55mm f/9.1, 25x, Bortle 7, SQM-L 19.0
Beautiful double star, relatively tight with visible difference in brightness.

A 193 (**)

Name: A193
Type: **
Constellation: And
Coordinates: 23h01m23.99s / +46°38'18.00"

Components:
m1 m2 ρ θ Year
9m6 9m8 1.6" 176° 2017
Robert Zebahl
102mm f/11, 160x, Bortle 6-, SQM-L 19.0
Observed at 125x and 160x under urban conditions (Bortle 6-, SQM-L 19.0). Too faint to separate the components.

A 968 (**)

Name: A968
Type: **
Constellation: And
Coordinates: 02h31m15.90s / +47°02'32.10"

Components:
m1 m2 ρ θ Year
9m0 9m5 1.8" 27° 2018
Robert Zebahl
102mm f/11, 125x, Bortle 6-, SQM-L 19.0
Clearly split, tight, slightly unequal.

A 1487 (**)

Name: A1487
Type: **
Constellation: And
Coordinates: 23h29m12.09s / +40°42'09.40"

Components:
m1 m2 ρ θ Year
9m0 9m5 1.1" 157° 2016
Robert Zebahl
102mm f/11, 125x, Bortle 6-, SQM-L 19.0
At 125x clearly visible as figure '8' with equally bright components. At 160x comparable view.

A 1528 (**)

Name: A1528
Type: **
Constellation: And
Coordinates: 02h35m42.19s / +44°11'23.30"

Components:
m1 m2 ρ θ Year
9m4 9m6 1.6" 193° 2017
Robert Zebahl
102mm f/11, 160x, Bortle 6-, SQM-L 19.0
At 125x almost separated with visible difference in brightness. AT 160x rather faint, barely split, little difference in brightness.

AC 1 (**)

Name: AC1
Type: **
Constellation: And
Coordinates: 00h20m54.10s / +32°58'40.90"

Components:
m1 m2 ρ θ Year
7m3 8m3 1.9" 290° 2018

../images/binary-star-orbits/AC1-orbit.jpg

Robert Zebahl
102mm f/11, 125x, Bortle 6-, SQM-L 19.0
Very attractive, relatively close with a clearly visible difference in brightness. In the immediate vicinity a brighter star shines in a lovely orange. Very nice contrast!

../sketches/2019-10-22_ac1.jpg

AC 14 (**)

Name: AC14
Type: **
Constellation: And
Coordinates: 01h28m19.28s / +42°46'56.00"

Components:
m1 m2 ρ θ Year
8m3 8m9 0.7" 93° 2018
Robert Zebahl
152mm f/5.9, 300x
Immediately visible as a double star, almost separated with little difference in brightness.

BU 483 (**)

Name: BU483
Type: **
Constellation: And
Coordinates: 00h09m03.67s / +40°50'34.30"

Components:
m1 m2 ρ θ Year
AC 7m0 7m7 158.5" 268° 2015
Robert Zebahl
B 8x40, Bortle 7, SQM-L 19.0
Large distance with significant difference in brightness.

BU 728 (**)

Name: BU728
Type: **
Constellation: And
Coordinates: 23h52m09.63s / +43°30'31.60"

Components:
m1 m2 ρ θ Year
AB 8m7 8m9 1.3" 10° 2016
Robert Zebahl
102mm f/11, 160x, Bortle 6-, SQM-L 19.0
At 125x two overlapping Airy disks with a small difference in brightness are visible. At 160x slightly better and almost separated.

ES 4 (**)

Name: ES4
Type: **
Constellation: And
Coordinates: 01h31m05.02s / +43°37'14.60"

Components:
m1 m2 ρ θ Year
8m1 9m1 2.8" 101° 2016
Robert Zebahl
70mm f/5.7, 128x
Not split. I probably didn't recognised the fainter component. The angular distance shouldn't be a problem.

ES 2076 (**)

Name: ES2076
Type: **
Constellation: And
Coordinates: 23h00m56.79s / +37°13'54.10"

Components:
m1 m2 ρ θ Year
9m5 9m5 1.8" 162° 2016
Robert Zebahl
102mm f/11, 125x, Bortle 6-, SQM-L 19.0
Observation under urban conditions (Bortle 6-, SQM-L 19.0). Too faint to separate.

HLD 56 (**)

Name: HLD56
Type: **
Constellation: And
Coordinates: 22h59m42.14s / +41°49'25.20"

Components:
m1 m2 ρ θ Year
9m3 9m4 1.3" 92° 2016
Robert Zebahl
102mm f/11, 160x, Bortle 6-, SQM-L 19.0
At 125x clearly visible as figure '8' with slight difference in brightness. Almost split at 160x.

HO 306 (**)

Name: HO306
Type: **
Constellation: And
Coordinates: 00h48m06.71s / +25°32'54.30"

Components:
m1 m2 ρ θ Year
9m6 9m9 1.5" 159° 2016
Robert Zebahl
102mm f/11, 160x, Bortle 6-, SQM-L 19.0
Pretty faint and tight with visible difference in brightness.

STF 24 (**)

Name: STF24
Type: **
Constellation: And
Coordinates: 00h18m30.59s / +26°08'25.10"

Components:
m1 m2 ρ θ Year
7m8 8m4 5.1" 247° 2017
Robert Zebahl
70mm f/5.7, 66x, Bortle 6-
Well split with visible difference in brightness.

STF 33 (**)

Name: STF33
Type: **
Constellation: And
Coordinates: 00h30m58.47s / +34°05'53.90"

Components:
m1 m2 ρ θ Year
8m8 8m9 2.8" 213° 2017
Robert Zebahl
70mm f/5.7, 128x, Bortle 4-, SQM-L 20.9
Components equally bright, easy to split.

STF 55 (**)

Name: STF55
Type: **
Constellation: And
Coordinates: 00h44m22.95s / +33°37'05.60"

Components:
m1 m2 ρ θ Year
8m3 8m9 2.3" 331° 2016
Robert Zebahl
70mm f/5.7, 128x, Bortle 7+, SQM-L 18.8
Well split with noticeable difference in brightness.

STF 72 (**)

Name: STF72
Type: **
Constellation: And
Coordinates: 00h54m37.50s / +39°10'09.70"

Components:
m1 m2 ρ θ Year
8m4 9m3 23.3" 173° 2015
Robert Zebahl
152mm f/5.9, 22x, Bortle 6, SQM-L 19.3
Easy with moderate difference in brightness. Both components appeared orange, the fainter one slightly more intense. The color was well visible at 69x.

STF 73 (**)

Name: STF73, 36 And
Type: **
Constellation: And
Coordinates: 00h54m58.02s / +23°37'42.40"

Components:
m1 m2 ρ θ Year
AB 6m1 6m5 1.1" 334° 2018
Robert Zebahl
102mm f/11, 125x, Bortle 6-, SQM-L 19.0
Clearly visible as figure '8' with a rather small difference in brightness.

152mm f/5.9, 300x
Split with little gap in between and little difference in brightness. Seeing was not really good.

STF 104 (**)

Name: STF104
Type: **
Constellation: And
Coordinates: 01h16m57.09s / +38°27'38.70"

Components:
m1 m2 ρ θ Year
8m0 9m8 13.4" 323° 2015
Robert Zebahl
152mm f/5.9, 69x, Bortle 6, SQM-L 19.3
Easy, rather close pair, but with a clear difference in brightness. Primary component appeared slightly orange, companion slightly grey-bluish.

STF 108 (**)

Name: STF108
Type: **
Constellation: And
Coordinates: 01h18m47.00s / +37°23'10.60"

Components:
m1 m2 ρ θ Year
6m5 9m6 6.4" 62° 2017
Robert Zebahl
120mm f/5, 75x, Bortle 6, SQM-L 19.1
Easily split with big difference in brightness.

152mm f/5.9, 69x, Bortle 6, SQM-L 19.3
Easy and pretty uneven. Primary component appeared slightly yellowish.

STF 141 (**)

Name: STF141
Type: **
Constellation: And
Coordinates: 01h40m03.42s / +38°58'10.70"

Components:
m1 m2 ρ θ Year
8m3 8m6 1.7" 303° 2018
Robert Zebahl
102mm f/11, 125x, Bortle 6-, SQM-L 19.0
Clearly separated, but still very close. Slightly uneven.

STF 149 (**)

Name: STF149
Type: **
Constellation: And
Coordinates: 01h44m30.83s / +39°57'31.10"

Components:
m1 m2 ρ θ Year
8m2 9m3 1.4" 81° 2018
Robert Zebahl
102mm f/11, 160x, Bortle 6-, SQM-L 19.0
At 125x almost split, noticeably uneven. At 160x split, but pretty tight.

STF 205 (**)

Name: STF205, gamma And, 57 And, Alamak
Type: **
Constellation: And
Coordinates: 02h03m53.92s / +42°19'47.50"

Components:
m1 m2 ρ θ Year
A-BC 2m3 5m0 9.4" 63° 2016
Robert Zebahl
63mm f/13.3, 42x, Bortle 6-, SQM-L 19.0
Easy to split with quite large difference in brightness.

152mm f/5.9, 100x, Bortle 6, SQM-L 19.3
Very easy. A: orange, BC: rather white.

STF 245 (**)

Name: STF245
Type: **
Constellation: And
Coordinates: 02h18m36.27s / +40°16'43.70"

Components:
m1 m2 ρ θ Year
AB 7m3 8m0 11.0" 294° 2015
Robert Zebahl
120mm f/5, 50x, Bortle 6, SQM-L 19.3
Both components well seen with noticeable difference in brightness.

STF 249 (**)

Name: STF249
Type: **
Constellation: And
Coordinates: 02h21m35.66s / +44°35'59.70"

Components:
m1 m2 ρ θ Year
7m2 9m0 2.4" 197° 2018
Robert Zebahl
63mm f/13.3, 168x, Bortle 6-, SQM-L 19.0
Not separated. The diffraction disk showed again and again irregularities, which indicated a double star.

STF 3042 (**)

Name: STF3042
Type: **
Constellation: And
Coordinates: 23h51m52.40s / +37°53'28.40"

Components:
m1 m2 ρ θ Year
7m6 7m8 5.8" 87° 2017
Robert Zebahl
55mm f/9.1, 25x, Bortle 7, SQM-L 19.0
Split, tight, nearly equally bright.

STF 3050 (**)

Name: STF3050
Type: **
Constellation: And
Coordinates: 23h59m29.33s / +33°43'26.90"

Components:
m1 m2 ρ θ Year
AB 6m5 6m7 2.5" 342° 2018

../images/binary-star-orbits/STF3050-AB-orbit.jpg

Robert Zebahl
55mm f/9.1, 83x, Bortle 6, NELM 5m0+, SQM-L 19.1
At 83x seen as '8'. From 100x to 166x seen as '8', temporarily visible with space between.
70mm f/5.7, 100x
Wonderful double star. Easy to split with slight difference in brightness.

STFA 1 (**)

Name: STFA1
Type: **
Constellation: And
Coordinates: 00h46m24.34s / +30°56'33.50"

Components:
m1 m2 ρ θ Year
AB 7m2 7m4 47.8" 47° 2018
Robert Zebahl
B 8x40, Bortle 7, SQM-L 19.0
Large distance with visible difference in brightness. I used a tripod.

STT 509 (**)

Name: STT509
Type: **
Constellation: And
Coordinates: 23h50m30.87s / +43°25'09.40"

Components:
m1 m2 ρ θ Year
8m1 9m9 5.5" 105° 2016
Robert Zebahl
102mm f/11, 125x, Bortle 6-, SQM-L 19.0
Easy to separate with a clear difference in brightness. The fainter companion appeared only as a tiny, faint, well detached star. At a distance of about 20 arc minutes to the east is the much tighter double star BU 728.

STTA 11 (**)

Name: STTA11
Type: **
Constellation: And
Coordinates: 01h07m09.16s / +38°39'01.70"

Components:
m1 m2 ρ θ Year
AB-C 7m6 8m8 59.3" 164° 2014
Robert Zebahl
152mm f/5.9, 22x, Bortle 6, SQM-L 19.3
Pretty wide pair with moderate difference in brightness. At 69x the primary component appeared slightly orange, BC rather greyish.

STTA 17 & BKO10 (**)

Name: STTA17 & BKO10
Type: **
Constellation: And
Coordinates: 01h24m30.85s / +39°01'30.30"

Components:
m1 m2 ρ θ Year
STTA17 AB 8m0 9m8 35.4" 101° 2015
STTA17 AC 8m0 8m5 134.9" 347° 2014
STTA17 CD 8m5 9m8 68.9" 279° 2015
STTA17 CE 8m5 13m3 81.2" 14° 2015
BKO10 AF 8m0 11m2 141.7" 270° 2015
Robert Zebahl
152mm f/5.9, 22x, Bortle 6, SQM-L 19.3
The components A-D and F easily visible as a rather conspicuous group with comparatively large distances. I didn't pay attention to the component E. No brighter stars in the immediate vicinity. The pair AB and CD are very similar; CD a bit wider with opposite position angle. Very nice multiple star also for smaller telescopes.