FH Muscae — Double Star in Musca
Observe
1Physical Properties
Magnitude
6.26
Variable Type
Ellipsoidal Variable
Spectral Type
B8V
Star Color
Blue-white
(B-V -0.05)
2Position & Identifiers
RA
12h 39m 55.6s
Dec
-66° 30' 42.0"
Constellation
Musca
(Mus)
HR
4814
HIP
61796
HD
110020
Variable ID
FH Mus
Querying VizieR catalog...
3How easy to split?
Primary
6.3 mag
Companion
11.8 mag
Separation
10.2″
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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 | Hard+ | Hard |
| Celestron C8 (203 mm SCT) C8 203mm | Medium+ | Medium | Hard+ |
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)
5Multiple Star System D: optical
Separation
10.2″
Companion Mag
11.8
Position Angle
108°
Star Colors
A: Blue-white
Discoverer
KOU 13
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 6.3 · B: 11.8 · Sep: 10.2″ · PA: 108° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
Explore
6
Size Comparison
Querying VizieR for stellar data…
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
Ell? Amp. 0.025V, 0.58:d.
Survey Image
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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.
Collinder 261
Open cluster
Open Cluster
mag 9.0
1.9°
Musca
Epsilon Mus
Semi-regular variable, range 4.0–4.3
Variable Star
mag 4.11
2.6°
Musca
Theta Mus
Easy double, sep 5.2″
Double Star
mag 5.51
3.1°
Musca
Coalsack Nebula
Dark nebula — shows as a void against the Milky Way
Dark Nebula
mag 12.0
3.6°
Crux
Alpha Cru
HIP 60718; Alpha2 Crucis
Easy double, sep 89.0″
Double Star
mag 1.73
3.7°
Crux
Acrux
HIP 60718; Alpha1 Crucis
Easy double, sep 3.5″
Double Star
mag 1.33
3.7°
Crux
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