HIP 32810 — Double Star in Canis Major
Good (58/100)
Observe
1Physical Properties
Magnitude
5.70
Range
5.71 - 5.79
Period
28.6 days
Variable Type
Ellipsoidal Variable
Spectral Type
B6Vnpe
Star Color
Blue-white
(B-V 0.14)
2Position & Identifiers
RA
06h 50m 23.3s
Dec
-31° 42' 22.0"
Constellation
Canis Major
(CMa)
HR
2545
HIP
32810
HD
50123
SAO
197263
Querying VizieR catalog...
3How easy to split?
Primary
5.7 mag
Companion
7.7 mag
Separation
42.7″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Easy | Easy | Easy |
| 150 mm Newton 150mm Newt. | Easy | Easy | Easy |
| Celestron C8 (203 mm SCT) C8 203mm | 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
Nov – Jan
(peak: Dec)
5Light Curve
6Multiple Star System Triple
Components
3 (triple)
Component IDs
AB
Separation
42.7″
Companion Mag
7.7
Position Angle
66°
Star Colors
A: Blue-white
B: Yellow
AB binary. B discordantly classified B9V: or A6:, vsini 158k/s.
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 5.7 · B: 7.7 · Sep: 42.7″ · PA: 66° · N up, E right
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
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7
Size Comparison
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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
H alpha variable.
Comp. B, RV var.
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.
Kappa CMa
Hot blue O-type star
Star
mag 3.96
0.8°
Canis Major
HP CMa
Easy double, sep 5.0″
Double Star
mag 5.80
1.3°
Canis Major
Adara
HIP 33579; Epsilon Canis Majoris; 21 Canis Majoris
Hot blue O-type star
Double Star
mag 1.50
3.3°
Canis Major
HIP 31190
Easy double, sep 24.7″
Double Star
mag 5.69
3.8°
Canis Major
NGC 2325
Elliptical galaxy
Galaxy
mag 11.2
4.0°
Canis Major
NGC 2298
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 9.4
4.3°
Puppis
NGC 2243
Open cluster
Open Cluster
mag 9.4
4.5°
Canis Major
HIP 30840
Tight double — a rewarding split at 1.2″
Double Star
mag 5.74
4.7°
Canis Major
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