Theta Draconis — Star in Draco
Observe
1Physical Properties
Magnitude
4.01
Spectral Type
F8IV
subgiant
Star Color
Yellow
(B-V 0.52)
Distance
64 ly
2Position & Identifiers
RA
16h 01m 53.3s
Dec
+58° 33' 55.0"
Constellation
Draco
(Dra)
HR
5986
HIP
78527
HD
144284
SAO
29765
Bayer
Theta
Flamsteed
13 Dra
Querying VizieR catalog...
3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Easy | 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
Set a location in User Settings to see visibility data.
Best season
Apr – Jun
(peak: May)
5Survey Image
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Explore
7
Size Comparison
Querying VizieR for stellar data…
8
Compare Stars
9
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
Discover
15Stellar Notes
3.0708d, K 25.3k/s, V0 -8.0k/s, asini 1.07.
Hyades group.
16
Light Travel Time Machine
17
Relativistic Travel
Nearby in the Sky
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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