12 Trianguli — Double Star in Triangulum
Observe
1Physical Properties
Magnitude
5.29
Spectral Type
F0III
giant
2Position & Identifiers
RA
02h 28m 10.0s
Dec
+29° 40' 10.0"
Constellation
Triangulum
(Tri)
HR
717
HIP
11486
HD
15257
SAO
75382
Flamsteed
12 Tri
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3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium | Hard+ | Hard |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 150 mm telescope 150mm scope | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
Set a location in User Settings to see visibility data.
Best season
Sep – Nov
(peak: Oct)
5Multiple Star System
Separation
0.1″
Companion Mag
7.9
Position Angle
232°
Discoverer
YSC 1
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6
Size Comparison
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7
Compare Stars
8
Spectral Classification
9
Hertzsprung-Russell Diagram
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10
Stellar Lifecycle
11
Blackbody Spectrum
12
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
13
Stellar Fusion
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Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
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