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R Aur

Observable Variable Star Excellent (70/100)

Range: 6.70 - 13.90, Period: 457.5d, Type: M

HR 1707 VariableStar Auriga (Aur) Visible Level 2 Small telescope (4") - Monitor brightness changes
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Physical Properties

Magnitude 6.50
Range 6.70 - 13.90
Period 458 days
Variable Type Mira (Long-period Pulsating)
Spectral Type M7IIIe
Star Color Red (B-V 1.66)

Position & Identifiers

RA 05h 17m 17.8s
Dec +53° 35' 10.0"
Constellation Auriga (Aur)
HR 1707
Variable ID R Aur
Double Cat 3845

Visibility

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Light Curve

Comparison Stars

Nearby stable stars for estimating brightness (AAVSO)

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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

ADS 3845A, M 6.7 - 13.7v, 457.64d, period changes; 10.18 - 13.12V, -0.06 to -0.43(U-B). Cycle of 64.5d also possible.
Binary. Component B, 9.50V, +0.47(B-V), +0.09(U-B), F4IV.
Probable SiO maser emission.

Survey Image

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