Rotanev
HIP 101769; Beta Del; 6 Del
HIP 101769; Beta Del; 6 Del
DoubleStar
Del
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
3.63
Spectral Type
F5IV
Star Color
Yellow-white
(B-V 0.44)
Distance
100.8 ly
Position & Identifiers
RA
20h 37m 33.0s
Dec
+14° 35' 43.0"
Constellation
Del
HR
7882
HIP
101769
Bayer
Beta
Flamsteed
6 Del
Double Cat
14073
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Multiple Star System
Components
5
Component IDs
AB
Separation
0.3″
Companion Mag
5.0
Companion Sp
F2V
Position Angle
320°
Star Colors
A: Yellow-white
B: Yellow-white
Discoverer
BU 151
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 0.3″ · PA: 320° · N up, E left
Unresolved · 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
AB 4.0 F5IV, 4.9 F5IV, 26.65y, a = 0.475" or 26.60y, a = 0.480". Speckle interferometry gives sep. 0.58" and with SB | data leads to masses 2.2 and 1.8 solar. Combined mag., colors. Components C-E optical.
26.65y D, K 7.6k/s, V0 -24.1k/s, asini 892.35; asini value of 563.8 in Abt and Levy 1976 (ApJS, 30, 273) | is in error.
Also classified F5III, F6III.
0.032".
Rotanev; Rotanen; Venator.
Survey Image
Loading survey image…