V3879 Sgr
Good (57/100)
HIP 91781
VariableStar
Sgr
Visible
Level 2
Small telescope (4") - Monitor brightness changes
Physical Properties
Magnitude
6.35
Range
6.05 - 6.58
Period
50 days
Variable Type
Semi-Regular Variable (Late-type Giant)
Spectral Type
M4III
Star Color
Red
(B-V 1.75)
Position & Identifiers
RA
18h 42m 55.2s
Dec
-19° 17' 02.0"
Constellation
Sgr
HR
7023
HIP
91781
Variable ID
V3879 Sgr
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Visibility
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Light Curve
Comparison Stars for V3879 Sgr (6.0–6.6)
Nearby stable stars for estimating brightness (AAVSO)
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Multiple Star System
Separation
0.1″
Companion Mag
9.0
Position Angle
-1°
Star Colors
A: Red
Discoverer
OCC9184
Size Comparison
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Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
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Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Fusion
Stellar Notes
SRb 6.05 - 6.58p, about 50d.
Occultation double.
Occultation diam., two determinations, 0.0085" and 0.0101".
Survey Image
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