V861 Scorpii — Variable Star in Scorpius
Excellent (71/100)
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1Physical Properties
Magnitude
6.15
Range
6.07 - 6.35
Period
7.8 days
Variable Type
Eclipsing Binary (Beta Lyrae-type)
Spectral Type
B0.5Ia
supergiant
Star Color
Yellow-white
(B-V 0.26)
2Position & Identifiers
RA
16h 56m 36.0s
Dec
-40° 49' 25.0"
Constellation
Scorpius
(Sco)
HR
6283
HIP
82911
HD
152667
SAO
227473
Variable ID
V861 Sco
Querying VizieR catalog...
3How easy to follow?
Magnitude
6.1 – 6.7 mag
Amplitude
0.6 mag
Period
7.85 d
Type
EB
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | V. hard | V. hard | Imp. |
| 50 mm finder 50mm finder | Medium | Medium | Medium |
| 150 mm telescope 150mm scope | 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
Apr – Jun
(peak: May)
5Survey Image
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6Light Curve
7Comparison Stars for V861 Sco (6.1–6.7)
Nearby stable stars for estimating brightness (AAVSO)
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8
Size Comparison
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9
Compare Stars
10
Spectral Classification
11
Hertzsprung-Russell Diagram
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12
Stellar Lifecycle
13
Blackbody Spectrum
14
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
15
Stellar Fusion
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16Stellar Notes
EB 6.07 - 6.69V, 7.84818d.
7.8483d, K 84.5k/s, V0 -34.6k/s, asini 9.09. Alternate orbits 7.8483d, K 99.4k/s, V0 -43.3k/s; 7.848250d, | K 82k/s, V0 -31k/s; 7.84825d, K 87.3k/s, V0 -34.4k/s, asini 9.4. Low mass companion. Tidal distortion.
Strongly reddened.
In cluster Collinder 316; Sco OB1.
H alpha emission. Nitrogen deficient. P Cyg type?
Also 0.6147d related to rotation of primary. Mass loss 0.000027 solar masses/y.
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 316
Open cluster
Open Cluster
mag 3.4
0.2°
Scorpius
HIP 82706
Wolf-Rayet star — rare, hot emission spectrum
Star
mag 6.59
1.1°
Scorpius
V923 Sco
Eclipsing binary, period 34.8d
Variable Star
mag 5.91
3.0°
Scorpius
Bug Nebula
NGC 6302
Small bright planetary nebula
Planetary Nebula
mag 9.6
5.0°
Scorpius
V856 Sco
Variable star, range 7.0–7.7
Variable Star
mag 7.05
9.4°
Scorpius
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