4 Draconis — Star in Draco
Observe
1Physical Properties
Magnitude
4.95
Range
4.9 - 5.12
Period
1703 days
Variable Type
Symbiotic Variable (Z Andromedae)
Spectral Type
M3IIIa
bright giant
Star Color
Red
(B-V 1.62)
Distance
204 ly
2Position & Identifiers
RA
12h 30m 06.7s
Dec
+69° 12' 04.0"
Constellation
Draco
(Dra)
HR
4765
HIP
60998
HD
108907
SAO
15816
Flamsteed
4 Dra
Variable ID
CQ 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 | 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
Feb – Apr
(peak: Mar)
5Survey Image
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Explore
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
Discover
14Stellar Notes
Lb? 4.95 - 5.04V.
15
Light Travel Time Machine
16
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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Mythology, bright stars, and deep-sky highlights.
Constellation
