Arkab Posterior — Star in Sagittarius
HIP 95294; Beta2 Sagittarii
Observe
1Physical Properties
Magnitude
4.29
Spectral Type
F2III
giant
Star Color
Yellow-white
(B-V 0.34)
Distance
109 ly
2Position & Identifiers
RA
19h 23m 13.2s
Dec
-44° 47' 59.0"
Constellation
Sagittarius
(Sgr)
HR
7343
HIP
95294
HD
181623
SAO
229654
Bayer
Beta2
Querying VizieR catalog...
3How easy to spot?
Sign in
and configure your equipment and default location to see a personalized row.
| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Medium+ | Medium+ | Medium |
| 50 mm finder 50mm finder | Easy | Easy | Easy |
| 150 mm telescope 150mm scope | 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)
5Survey Image
Loading survey image…
Explore
7
Size Comparison
Querying VizieR for stellar data…
8
Compare Stars
9
Spectral Classification
10
Hertzsprung-Russell Diagram
Loading HR diagram…
11
Stellar Lifecycle
12
Blackbody Spectrum
13
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
14
Stellar Fusion
Discover
15Stellar Notes
Arkab Posterior; Arkab or Urkab with HR 7337.
16
Light Travel Time Machine
17
Relativistic Travel
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.
Arkab Prior
HIP 95241; Beta1 Sagittarii
Easy double, sep 28.3″
Double Star
mag 4.01
0.4°
Sagittarius
NGC 6768
Elliptical galaxy
Galaxy
mag 12.85
4.8°
Corona Australis
C68
NGC 6729
Diffuse nebula
Diffuse Nebula
mag 10.0
8.8°
Corona Australis
NGC 6723
Globular cluster — dense ball of ancient stars
Globular Cluster
mag 7.3
9.3°
Sagittarius
Explore Nightbase
Related knowledge, tools, and stories — no observation planning required.
Arthur Eddington
1919 eclipse expedition confirming general relativity; first theory of stellar interiors; the Eddington limit
Biography
The Hertzsprung-Russell Diagram — Reading Stars Like a Map
The HR diagram turns the night sky into a physics map: every named star has a spot, every spot tells you mass, age, and fate. A guide for amateur observers.
Article
Sagittarius
Mythology, bright stars, and deep-sky highlights.
Constellation
