V1031 Orionis — Variable Star in Orion
Good (56/100)
Observe
1Physical Properties
Magnitude
6.03
Range
6.02 - 6.43
Period
3.4 days
Variable Type
Eclipsing Binary (Algol-type)
Spectral Type
A4V
Star Color
White
(B-V 0.16)
2Position & Identifiers
RA
05h 47m 26.7s
Dec
-10° 31' 59.0"
Constellation
Orion
(Ori)
HR
2001
HIP
27341
HD
38735
SAO
150814
Variable ID
V1031 Ori
Querying VizieR catalog...
3How easy to follow?
Magnitude
6.0 – 6.4 mag
Amplitude
0.4 mag
Period
3.41 d
Type
EA/DM
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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 | Hard+ | Hard+ | Hard+ |
| 150 mm telescope 150mm scope | Hard+ | Hard+ | Hard+ |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
Out of reach for typical amateur telescopes, even at Bortle 3.
4Visibility
Set a location in User Settings to see visibility data.
Best season
Nov – Jan
(peak: Dec)
5Survey Image
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6Light Curve
7Comparison Stars for V1031 Ori (6.0–6.4)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
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
EA 6.02 - 6.43V, 6.1 - 6.5p. 3.4057d. Redder at min.
Spectroscopic triple system with nearly equal components.
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.
Saiph
HIP 27366; Kappa Orionis; 53 Orionis
Bright naked-eye star, mag 2.1
Star
mag 2.06
0.9°
Orion
1 Mon
Variable star, range 5.9–6.4
Variable Star
mag 6.12
3.1°
Monoceros
3 Mon
Tight double — a rewarding split at 2.0″
Double Star
mag 4.95
3.5°
Monoceros
NGC 1999
Reflection nebula around a bright star
Reflection Nebula
mag 9.50
4.7°
Orion
NGC 1980
Emission nebula — try an OIII filter
Emission Nebula
mag 2.50
5.5°
Orion
RX Lep
Semi-regular variable, range 5.0–7.4
Variable Star
mag 5.68
8.9°
Lepus
VV Ori
Eclipsing binary, period 1.5d
Variable Star
mag 5.34
10.0°
Orion
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