Tau Draconis — Star in Draco
Observe
1Physical Properties
Magnitude
4.45
Spectral Type
K2+IIIbCN1Fe1
Star Color
Orange
(B-V 1.25)
(reddened by dust)
Distance
217 ly
2Position & Identifiers
RA
19h 15m 33.0s
Dec
+73° 21' 20.0"
Constellation
Draco
(Dra)
HR
7352
HIP
94648
HD
181984
SAO
9366
Bayer
Tau
Flamsteed
60 Dra
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium+ | Medium | Medium |
| 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
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Best season
Jun – Aug
(peak: Jul)
5Survey Image
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7
Size Comparison
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8
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Spectral Classification
10
Hertzsprung-Russell Diagram
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11
Stellar Lifecycle
12
Blackbody Spectrum
13
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
14
Stellar Fusion
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15
Light Travel Time Machine
16
Relativistic Travel
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Visibility scores assume a 150 mm Newton at Bortle 4.
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Article
Draco
Mythology, bright stars, and deep-sky highlights.
Constellation
