X Cancri — Variable Star in Cancer
Excellent (64/100)
Observe
1Physical Properties
Magnitude
6.64
Range
5.69 - 6.94
Period
180 days
Variable Type
Semi-Regular Variable (Late-type Giant)
Spectral Type
C6II
bright giant
Star Color
Deep ruby red
(B-V 3.36)
Distance
466 ly
2Position & Identifiers
RA
08h 55m 22.9s
Dec
+17° 13' 53.0"
Constellation
Cancer
(Cnc)
HR
3541
HIP
43811
HD
76221
SAO
98230
Variable ID
X Cnc
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3How easy to follow?
Magnitude
5.6 – 7.5 mag
Amplitude
1.9 mag
Period
180 d
Type
SRB
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | V. hard | Imp. | Imp. |
| 50 mm finder 50mm finder | Easy | Easy | Medium+ |
| 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
Dec – Feb
(peak: Jan)
5Survey Image
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6Light Curve
7Comparison Stars for X Cnc (5.6–7.5)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
8
Size Comparison
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9
Compare Stars
10
Spectral Classification
11
Hertzsprung-Russell Diagram
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12
Stellar Lifecycle
13
Blackbody Spectrum
14
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
15
Stellar Fusion
Discover
16Stellar Notes
SRb 5.6 - 7.5v, 9.3 - 10.9p, 195:d.
Occultation diam. = 0.0079".
17
Light Travel Time Machine
18
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.
62 Cnc
Easy double, sep 975.6″
Double Star
mag 5.20
2.0°
Cancer
NGC 2673
Elliptical galaxy
Galaxy
mag 12.9
2.3°
Cancer
T Cnc
Mira-type variable, range 7.6–10.5
Variable Star
mag 7.60
2.6°
Cancer
M44
Beehive Cluster or Praesepe
Scattered bright open cluster
Open Cluster
mag 3.7
4.5°
Cancer
27 Cnc
Semi-regular variable, range 5.4–5.8
Variable Star
mag 5.50
8.3°
Cancer
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