V711 Tau
Observable Double Star
Good (54/100)
Sep: 6.7", Companion: mag 8.9
Observable Variable Star
Range: 5.7 - 5.8, Period: 2.8d, Type: RS CVn
HIP 16846
DoubleStar
Tau
Visible
Level 3
Medium telescope (6-8") - Requires steady seeing
Physical Properties
Magnitude
5.71
Variable Type
RS CVn (Chromospherically Active)
Spectral Type
G9V
Star Color
Orange
(B-V 0.92)
Distance
101.9 ly
Position & Identifiers
RA
03h 36m 47.3s
Dec
+00° 35' 16.0"
Constellation
Tau
HR
1099
HIP
16846
Variable ID
V711 Tau
Double Cat
2644
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Comparison Stars for V711 Tau (5.7–5.8)
Nearby stable stars for estimating brightness (AAVSO)
Loading comparison stars…
Multiple Star System
Separation
6.7″
Companion Mag
8.9
Companion Sp
K6
Position Angle
273°
Star Colors
A: Orange
B: Red
Discoverer
STF 422
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 6.7″ · PA: 273° · 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
RS 5.70 - 5.81V, 2.83782d. Min. migrate in period 13y. Brightest of 25 RS CVn binaries known in 1976. Also var. radio | emission. Radio flare star with variable polarization. Amp. in red light (6600 A) 0.11 mag. Star spots inferred to | be about 1100d cooler than surrounding photosphere.
5.88 dG9, 8.83, B-V +0.99, U-B +0.79, K6V, 2101y, a = 8.023". Close radio binary.
ADS 2644A, 2.8378d, K 50.2k/s, V0 -14.0k/s, msin3i 0.227, asini 1.96.
0.055".
Survey Image
Loading survey image…