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Rho Cancri — Star in Cancer

HIP 43834; Rho2 Cancri; 58 Cancri

Magnitude 5.2m Star Cancer (Cnc) Visible
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1Physical Properties

Magnitude 5.22
Spectral Type G8II-III bright giant
Star Color Orange (B-V 1.00)

2Position & Identifiers

RA 08h 55m 39.7s
Dec +27° 55' 39.0"
Constellation Cancer (Cnc)
HR 3540
HIP 43834
HD 76219
SAO 80511
Bayer Rho2
Flamsteed 58 Cnc
SIMBAD Wikipedia

3How easy to spot?

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Equipment Bortle 3 Bortle 4 Bortle 5
Naked eye Medium Hard+ Hard
50mm finder Easy Easy Easy
150mm scope Easy Easy Easy
Easy Medium Hard Very hard Impossible

Bortle 3 = rural · 4 = outer suburbs · 5 = suburbs

4Visibility

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Best season Dec – Feb (peak: Jan)

5Survey Image

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6

Size Comparison

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7

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8

Spectral Classification

9

Hertzsprung-Russell Diagram

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Read: The Hertzsprung-Russell Diagram — Reading Stars Like a Map
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

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14Stellar Notes

See HR 3521.

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.

Iota Cnc
HIP 43103; Iota Cancri; 48 Cancri
Easy
Colorful double, sep 30.6″
Double Star mag 4.02 2.1° Cancer
RS Cnc
Easy
Semi-regular variable, range 5.3–6.9
Variable Star mag 5.95 4.5° Cancer
NGC 2683
Easy
Edge-on galaxy
Galaxy mag 9.7 5.5° Lynx
M44
Beehive Cluster or Praesepe
Easy
Scattered bright open cluster
Open Cluster mag 3.7 8.7° Cancer
Show on Map

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