R Cancri — Variable Star in Cancer
Excellent (74/100)
Observe
1Physical Properties
Magnitude
7.13
Range
6.07 - 12.30
Period
362 days
Variable Type
Mira (Long-period Pulsating)
Spectral Type
M7IIIe
bright giant
Star Color
Red
(B-V 1.56)
Distance
155 ly
2Position & Identifiers
RA
08h 16m 33.9s
Dec
+11° 43' 35.0"
Constellation
Cancer
(Cnc)
HR
3248
HIP
40534
HD
69243
SAO
97694
Variable ID
R Cnc
Querying VizieR catalog...
3How easy to follow?
Magnitude
6.2 – 11.8 mag
Amplitude
5.6 mag
Period
361.5 d
Type
M
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| Equipment | Bortle 3 | Bortle 4 | Bortle 5 |
|---|---|---|---|
| Naked eye Naked eye | Imp. | Imp. | Imp. |
| 50 mm finder 50mm finder | V. hard | Imp. | Imp. |
| 150 mm telescope 150mm scope | Medium | Hard+ | Hard |
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 R Cnc (6.2–11.8)
Nearby stable stars for estimating brightness (AAVSO)
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Explore
8
Size Comparison
Querying VizieR for stellar data…
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
M 6.2 - 11.8v, 361.43d.
SiO maser.
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.
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Article
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Mythology, bright stars, and deep-sky highlights.
Constellation
