HIP 101909 — Star in Delphinus
Observe
1Physical Properties
Magnitude
5.97
Spectral Type
B3V
Star Color
Blue
(B-V -0.14)
2Position & Identifiers
RA
20h 39m 05.0s
Dec
+15° 50' 17.0"
Constellation
Delphinus
(Del)
HR
7899
HIP
101909
HD
196775
SAO
106347
Double Cat
14106
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3How easy to spot?
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Hard+ | Hard | V. 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
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Best season
Jun – Aug
(peak: Jul)
5Survey Image
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6
Size Comparison
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7
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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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14Stellar Notes
AB optical. B, 13v at 7".
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.
Gamma Del
HIP 102531; Gamma1 Delphini; 12 Delphini
Colorful double, sep 9.8″
Double Star
mag 5.14
1.8°
Delphinus
EU Del
Semi-regular variable, range 5.8–6.9
Variable Star
mag 6.25
2.4°
Delphinus
C42
NGC 7006
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 10.6
5.4°
Delphinus
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