18 UMa

HIP 45493; 18 UMa Star Ursa Major (UMa) Visible Level 2 Small telescope (4")

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Physical Properties

Magnitude 4.83

Range 5.02 - 5.05

Period 2.9 hours

Variable Type Delta Scuti (Low Amplitude)

Spectral Type A5V

Star Color Yellow-white (B-V 0.19)

Distance 78 ly

Position & Identifiers

RA 09h 16m 11.3s

Dec +54° 01' 19.0"

Constellation Ursa Major (UMa)

HR 3662

HIP 45493

Flamsteed 18 UMa

Variable ID DD UMa

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Spectral Classification

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Stellar Notes

Variable Star

Delta Sct? Amp. 0.03V, 3 hrs., but sometimes cst. for 5 hrs.

Group/Cluster

Sirius group; UMa stream.

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