Pi And
Observable Double Star
Excellent (69/100)
Sep: 36.2", Companion: mag 7.1
HIP 2912; Pi And; 29 And
DoubleStar
And
Visible
Level 2
Small telescope (4") - Requires steady seeing
Physical Properties
Magnitude
4.36
Spectral Type
B5V
Star Color
Blue-white
(B-V -0.14)
Position & Identifiers
RA
00h 36m 52.9s
Dec
+33° 43' 10.0"
Constellation
And
HR
154
HIP
2912
Bayer
Pi
Flamsteed
29 And
Double Cat
513
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Visibility
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Multiple Star System
Components
3
Component IDs
AB
Separation
36.2″
Companion Mag
7.1
Companion Sp
K6V
Position Angle
174°
Star Colors
A: Blue-white
B: Red
Discoverer
H 5 17
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 36.2″ · PA: 174° · 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
AB 103000?y. Component B spectrum A6V or Am(A3/F0/F2), RV +11.9k/s. Component C, 11.4v, F3 at 55" optical.
ADS 513A, 143.6065d, K 47.5k/s, V0 +8.35k/s, msin3i 27.1, asini 77.6. Unresolved by speckle interferometry.
The secondary has evidently been seen only by J. A. Pearce in 1936.
Survey Image
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