HIP 22573 — Double Star in Caelum
Observe
1Physical Properties
Magnitude
5.86
Spectral Type
A1Vn
Star Color
White
(B-V 0.08)
2Position & Identifiers
RA
04h 51m 28.2s
Dec
-34° 54' 23.0"
Constellation
Caelum
(Cae)
HR
1559
HIP
22573
HD
31093
SAO
195357
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 | Hard+ | Hard | V. hard+ |
| 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
Oct – Dec
(peak: Nov)
5Multiple Star System
Separation
0.2″
Companion Mag
7.0
Position Angle
75°
Star Colors
A: White
B: Yellow-white
Discoverer
FIN 320
Separation over time
Period: 42.9 y
Eccentricity: 0.826
Now: 0.20", PA 64°
+ 0.03" in 5 years
Apparent separation over time, computed from ORB6 orbital elements. Steep curves indicate fast-changing pairs — catch them while they're splittable.
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
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.
Explore Nightbase
Related knowledge, tools, and stories — no observation planning required.
Caelum
Mythology, bright stars, and deep-sky highlights.
Constellation
Double Stars — A Guide for Observers
Two suns where one appeared — how to find, split, and appreciate the night sky's finest pairs. From Albireo's gold-and-blue to the Sirius B challenge.
Article
Jupiter
The Great Red Spot, cloud belts, and the Galilean moons.
Deep dive
