Psi Virginis — Double Star in Virgo
Observe
1Physical Properties
Magnitude
4.79
Range
4.73 - 4.96
Variable Type
Semi-Regular Variable
Spectral Type
M3-IIICa-1
Star Color
Red
(B-V 1.60)
Distance
155 ly
2Position & Identifiers
RA
12h 54m 21.2s
Dec
-09° 32' 20.0"
Constellation
Virgo
(Vir)
HR
4902
HIP
62985
HD
112142
SAO
139033
Bayer
Psi
Flamsteed
40 Vir
Variable ID
Psi Vir
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)
5Multiple Star System
Separation
0.2″
Companion Mag
8.3
Position Angle
111°
Star Colors
A: Red
Discoverer
OCC 387
Close binary, sep. 0.040", unresolved by speckle interferometry. If companion on main sequence, the inferred spectral | type is F6V.
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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
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14Stellar Notes
Lb 4.7 - 4.8V.
Ultraviolet FeII emission.
Occultation diam. = 0.00492 - 0.0065".
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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