Electra
HIP 17499; 17 Tau
HIP 17499; 17 Tau
DoubleStar
Tau
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
3.70
Spectral Type
B6III
Star Color
Blue-white
(B-V -0.11)
Distance
404.6 ly
Position & Identifiers
RA
03h 44m 52.5s
Dec
+24° 06' 48.0"
Constellation
Tau
HR
1142
HIP
17499
Flamsteed
17 Tau
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Visibility
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Multiple Star System
Separation
99.1″
Companion Mag
13.0
Position Angle
144°
Star Colors
A: Blue-white
B: Yellow-white
Discoverer
HL 7
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 99.1″ · PA: 144° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
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 Notes
Sep. 0.062". Occultation of 1972 Mar. 19 indicated mag. diff 3.4, sep. 0.010".
4.0, 6.0, sep. 0.002", 100.46d, K 26.0k/s, V0 -0.3k/s, asini 30.7. Unresolved by speckle interferometry.
Pleiades cluster; Mel 22 #468; in reflection nebula; Pleiades nebula. Member assoc. Tau R1 at 110 pc.
Electra.
Survey Image
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