42 Lyncis — Double Star in Lynx
Observe
1Physical Properties
Magnitude
5.25
Spectral Type
F0V
Star Color
Yellow-white
(B-V 0.22)
2Position & Identifiers
RA
09h 38m 21.7s
Dec
+40° 14' 23.0"
Constellation
Lynx
(Lyn)
HR
3829
HIP
47300
HD
83287
SAO
42958
Flamsteed
42 Lyn
Querying VizieR catalog...
3How easy to split?
Primary
5.3 mag
Companion
11.6 mag
Separation
62.7″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Hard | V. hard+ | V. hard |
| 150 mm Newton 150mm Newt. | Medium | Medium | Hard+ |
| Celestron C8 (203 mm SCT) C8 203mm | Medium+ | Medium | Medium |
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
Jan – Mar
(peak: Feb)
5Multiple Star System
Separation
62.7″
Companion Mag
11.6
Companion Sp
K5
Position Angle
297°
Star Colors
A: Yellow-white
B: Red
Discoverer
SKF2572
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 5.2 · B: 11.6 · Sep: 62.7″ · PA: 297° · N up, E right
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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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
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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