HIP 88396 — Double Star in Sagittarius
Observe
1Physical Properties
Magnitude
6.74
Spectral Type
B0.5III
giant
Star Color
Blue-white
(B-V -0.05)
2Position & Identifiers
RA
18h 03m 01.7s
Dec
-22° 43' 06.0"
Constellation
Sagittarius
(Sgr)
HR
6727
HIP
88396
HD
164637
SAO
186169
Querying VizieR catalog...
3How easy to split?
Primary
6.7 mag
Companion
9.2 mag
Separation
11.4″
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| Telescope | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| 80 mm refractor 80mm refr. | Easy | Medium+ | Medium+ |
| 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
May – Jul
(peak: Jun)
5Multiple Star System
Separation
11.4″
Companion Mag
9.2
Position Angle
288°
Star Colors
A: Blue-white
B: Yellow-white
Discoverer
RSS 468
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
A: 6.7 · B: 9.2 · Sep: 11.4″ · PA: 288° · N up, E right
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 2.3″
Explore
6
Size Comparison
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7
Compare Stars
8
Spectral Classification
9
Hertzsprung-Russell Diagram
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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
Sgr OB1.
Nearby in the Sky
Other targets within a few degrees — pan your scope a little and keep exploring.
Visibility scores assume a 150 mm Newton at Bortle 4.
M20
Trifid Nebula
Emission nebula — try an OIII filter
Emission Nebula
mag 6.3
0.3°
Sagittarius
M21
NGC 6531
Rich open cluster
Open Cluster
mag 5.9
0.4°
Sagittarius
4 Sgr
Colorful double, sep 3.7″
Double Star
mag 4.76
1.3°
Sagittarius
IC 4678
Diffuse nebula
Diffuse Nebula
mag 10.40
1.6°
Sagittarius
21 Sgr
Colorful double, sep 1.7″
Double Star
mag 4.81
5.6°
Sagittarius
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