- Double Stars (Tri) -

And (60) Cep (28) Cyg (98) Leo (35) Peg (43) SGE (1)
Aql (59) Cet (5) Del (16) Lep (7) Per (38) Sgr (11)
Aqr (4) CMa (6) Dra (27) Lib (4) Psc (18) Tau (19)
Ari (8) CMi (3) Equ (7) LMi (6) Pup (3) Tri (10)
Aur (32) Cnc (14) Eri (6) Lyn (18) Sco (5) UMa (47)
Boo (32) Com (13) Gem (33) Lyr (32) Sct (5) UMi (5)
Cam (17) CrB (10) Her (59) Mon (14) Ser (22) Vir (20)
Cap (7) Crv (4) Hya (11) Oph (18) Sex (6) Vul (12)
Cas (42) CVn (15) Lac (13) Ori (39) Sge (8)

AG 304 (**)

Name: AG304, 15 Tri
Type: **
Constellation: Tri
Coordinates: 02h35m46.82s / +34°41'15.20"

Components:
m1 m2 ρ θ Year
5m.6 6m.8 142.4" 16° 2013
René Merting
B 18x70
ein extrem komfortabel getrenntes Sternpaar - Komponente A im Süden strahlt weißgelb, B ist 1.5 Größenklassen schwächer und wirkt kupfergrau - interessant: parallel zu den beiden Sternen stehen westlich zwei deutlich schwächere Sterne in gleichem Abstand und Positionswinkel wie die Komponenten von 15 Tri - alle 4 Sterne bilden ein Parallelogramm

HO 216 (**)

Name: HO216
Type: **
Constellation: Tri
Coordinates: 02h27m00.99s / +31°17'17.30"

Components:
m1 m2 ρ θ Year
7m.9 9m.4 1.4" 2018

../images/binary-star-orbits/HO216-orbit.jpg

Robert Zebahl
120mm f/5, 150x, Bortle 6-
2021-12-10: Under these moderate conditions at 100x to 150x in no way separable.

STF 143 & FOX 118 (**)

Name: STF143 & FOX118
Type: **
Constellation: Tri
Coordinates: 01h40m25.98s / +34°20'20.50"

Components:
m1 m2 ρ θ Year
STF143 AB 8m.2 10m.0 46.5" 319° 2015
FOX118 AC 8m.2 11m.1 63.1" 137° 2015
René Merting
12.5" f/4.5, 45x
AB: bei 45x zeigt sich B gut abgesetzt nordwestlich von A - Helligkeitsunterschied gut 1.5 Größenklassen
AC: bei 45 ist C in entgegengesetzter Richtung auf einer Linie mit AB zu erkennen - Entfernung 1.5x größer als AB - C ist noch schwächer als B

STF 219 (**)

Name: STF219
Type: **
Constellation: Tri
Coordinates: 02h10m16.10s / +33°21'55.20"

Components:
m1 m2 ρ θ Year
8m.0 8m.9 11.6" 184° 2016
Robert Zebahl
B 16x70, Bortle 6, SQM-L 19.2
2020-11-07: Immediately visible elongated, partly separated.

55mm f/9.1, 25x, Bortle 6, NELM 5m.0+, SQM-L 19.1
Well separated with noticeable difference in brightness.

René Merting
12.5" f/4.5, 45x
bei 45x ein schön eng zusammenstehendes Sternpaar, ein bisschen mehr als knapp getrennt - B im Süden ist maximal eine dreiviertel Magnitude schwächer

STF 227 (**)

Name: STF227, iota Tri, 6 Tri
Type: **
Constellation: Tri
Coordinates: 02h12m22.28s / +30°18'11.10"

Components:
m1 m2 ρ θ Year
5m.3 6m.7 4.0" 68° 2019

../images/binary-star-orbits/STF227-orbit-solution-1.jpg ../images/binary-star-orbits/STF227-orbit-solution-2.jpg

Robert Zebahl
70mm f/5.7, 57x
At 44x even separable with a clear difference in brightness, whereby the companion is almost outshone by the primary component. At 57x easy to separate. Primary component shines in bright orange, companion slightly orange. Beautiful sight together with STF232 in one field of view!

../sketches/robert-zebahl/2019-12-12_6_tri_stf232.jpg

STF 232 (**)

Name: STF232
Type: **
Constellation: Tri
Coordinates: 02h14m42.16s / +30°23'41.20"

Components:
m1 m2 ρ θ Year
7m.8 7m.9 6.7" 69° 2019
Robert Zebahl
70mm f/5.7, 22x
Very beautiful view! With all used magnifications together with iota Tri (6 Tri) in one field of view. Separable at 22x, but the components are still quite close together and appear similarly bright. At 44x easy to separate with little difference in brightness. At 57x a very small color difference is visible without being able to clearly name the colors. STF232 was sketched together with 6 Tri.

STF 239 (**)

Name: STF239
Type: **
Constellation: Tri
Coordinates: 02h17m25.29s / +28°44'42.10"

Components:
m1 m2 ρ θ Year
EC 7m.1 7m.8 14.0" 212° 2019
Robert Zebahl
B 12x42, Bortle 4-, SQM-L 20.8
2022-10-19: Seperated, but pretty tight components with a moderate difference in brightness.

B 16x70, Bortle 6, SQM-L 19.2
2020-11-07: Very nicely embedded in group of brighter and medium bright stars. Components relatively tight with little difference in brightness. Colorwise inconspicuous. Forms a trapezoid with three other stars in the north.

55mm f/9.1, 25x, Bortle 6, NELM 5m.0+, SQM-L 19.1
Easy to split, large distance, noticeable difference in brightness.

STF 246 (**)

Name: STF246
Type: **
Constellation: Tri
Coordinates: 02h18m39.75s / +34°29'15.60"

Components:
m1 m2 ρ θ Year
7m.8 9m.3 9.8" 123° 2018
René Merting
12.5" f/4.5, 45x
bei 45x ein schönes, eng stehendes Paar, knapp getrennt - Komponente B im Südosten ist 1.5 Magnituden schwächer - leichter Farbkontrast, A wirkt leicht gelblich

STF 269 (**)

Name: STF269
Type: **
Constellation: Tri
Coordinates: 02h28m11.72s / +29°52'24.40"

Components:
m1 m2 ρ θ Year
AB 7m.6 9m.0 1.7" 345° 2018
Robert Zebahl
120mm f/5, 150x, Bortle 6-
2021-12-10: Seperated, fairly tight with much fainter companion.

STF 285 (**)

Name: STF285
Type: **
Constellation: Tri
Coordinates: 02h38m45.91s / +33°25'08.20"

Components:
m1 m2 ρ θ Year
7m.5 8m.1 1.7" 162° 2018
Robert Zebahl
120mm f/5, 120x, Bortle 6-
2021-12-10: At 100x barely, at 120x clearly, at 150x easily separated with well visible difference in brightness of the components.