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88 Tau

Observable Double Star Good (49/100)

Sep: 69.2", Companion: mag 7.8

HIP 21402; 88 Tau DoubleStar Tau Visible Level 2 Small telescope (4") - Requires steady seeing
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Physical Properties

Magnitude 4.25
Spectral Type A5m
Star Color Yellow-white (B-V 0.18)
Distance 91 ly

Position & Identifiers

RA 04h 35m 39.3s
Dec +10° 09' 39.0"
Constellation Tau
HR 1458
HIP 21402
Flamsteed 88 Tau
Double Cat 3317

Visibility

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Multiple Star System

Separation 69.2″
Companion Mag 7.8
Position Angle 300°
Star Colors A: Yellow-white B: Yellow
Discoverer SHJ 45

Eyepiece View

80x Dawes: 1.9″ TFOV: 0.6°
Realistic = true angular size
N E 300° A (4.2) B (7.8)

Sep: 69.2″ · PA: 300° · 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

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Stellar Fusion

Stellar Notes

ADS 3317A, E?, 4.23 - 4.30V.
CPM. Companion 7.84V, +0.54(B-V), +0.04(U-B), F8V. vsini =<25k/s.
ADS 3317A, 3.57124d, K 76.3k/s, V0 +28.7k/s, asini 3.75.
Hyades group.
Also classified A6-7III-IVmw.
Diam. relative to Sun = 2.2.

Survey Image

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