Theta Sgr
HIP 98412; Theta1 Sgr
HIP 98412; Theta1 Sgr
DoubleStar
Sgr
Visible
Level 6
Professional/Research - Requires steady seeing
Physical Properties
Magnitude
4.37
Spectral Type
B3IV
Star Color
Blue-white
(B-V -0.15)
Position & Identifiers
RA
19h 59m 44.2s
Dec
-35° 16' 35.0"
Constellation
Sgr
HR
7623
HIP
98412
Bayer
Theta1
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Visibility
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Multiple Star System
Separation
0.2″
Position Angle
175°
Star Colors
A: Blue-white
Discoverer
ISO 11
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.2″ · PA: 175° · N up, E left
Unresolved · 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
2.1051d, K 15.9k/s, V0 +0.9k/s, asini 0.460.
Member of the local association (Pleiades group).
Survey Image
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