R Hya
Observable Variable Star
Excellent (74/100)
Range: 3.5 - 10.9, Period: 359.0d, Type: M
HIP 65835
VariableStar
Hya
Visible
Level 1
Naked eye / Binoculars - Monitor brightness changes
Physical Properties
Magnitude
4.97
Range
3.5 - 10.9
Period
359.000 days
Variable Type
Mira (Long-period Pulsating)
Spectral Type
M7IIIe
Star Color
Red
(B-V 1.60)
Position & Identifiers
RA
13h 29m 42.8s
Dec
-23° 16' 53.0"
Constellation
Hya
HR
5080
HIP
65835
Variable ID
R Hya
Double Cat
8920
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Light Curve
Comparison Stars for R Hya (3.5–10.9)
Nearby stable stars for estimating brightness (AAVSO)
Loading comparison stars…
Multiple Star System
Separation
21.1″
Companion Mag
12.0
Position Angle
323°
Star Colors
A: Red
Discoverer
HO 381
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 21.1″ · PA: 323° · N up, E left
Resolved · Rayleigh: 2.3″ · Dawes: 1.9″ · Eff: 3.1″
Size Comparison
Querying VizieR for stellar data…
Stellar Lifecycle
Spectral Classification
Hertzsprung-Russell Diagram
Loading HR diagram…
Blackbody Spectrum
Stellar Absorption Spectrum
Simulated absorption spectrum based on spectral type. Hover over lines to identify elements.
Stellar Notes
ADS 8920A, M 3.5 - 10.9v, 388.87d. Period varies; was 500d beginning of 18th century. M8 at minimum. Discovered by | Montanari in 1670.
Hyades group.
Technetium star. SiO maser emission. Also classified M6e-M9e.
Survey Image
Loading survey image…