Observe
1Physical Properties
Magnitude
5.42
Spectral Type
A0IV
subgiant
Star Color
White
(B-V 0.08)
Distance
251 ly
2Position & Identifiers
RA
19h 50m 44.8s
Dec
-59° 11' 35.0"
Constellation
Pavo
(Pav)
HR
7531
HIP
97646
HD
186957
SAO
246293
Querying VizieR catalog...
3How easy to split?
Primary
5.4 mag
Companion
7.1 mag
Separation
406.6″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Easy | Easy | Easy |
| 150 mm Newton 150mm Newt. | Easy | Easy | Easy |
| Celestron C8 (203 mm SCT) C8 203mm | Easy | Easy | Easy |
Easy
Medium
Hard
Very hard
Impossible
Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs
4Visibility
Set a location in User Settings to see visibility data.
Best season
Jun – Aug
(peak: Jul)
5Multiple Star System D: optical
Separation
406.6″
Companion Mag
7.1
Companion Sp
A5IV
Position Angle
232°
Star Colors
A: White
B: Yellow-white
Discoverer
SHY 759
Eyepiece View
15x
Dawes: 1.9″
TFOV: 3.3°
Realistic = true angular size
A: 5.4 · B: 7.1 · Sep: 406.6″ · PA: 232° · N up, E right
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
Explore
6
Size Comparison
Querying VizieR for stellar data…
7
Compare Stars
8
Spectral Classification
9
Hertzsprung-Russell Diagram
Loading HR diagram…
10
Stellar Lifecycle
11
Blackbody Spectrum
12
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
13
Stellar Fusion
Discover
14Stellar Notes
0.007".
15
Light Travel Time Machine
16
Relativistic Travel
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Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
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Deep dive
