99 Her
Observable Double Star
Fair (26/100)
Sep: 1.6", Companion: mag 9.0
HIP 88745; 99 Her
DoubleStar
Her
Visible
Level 5
Expert level - Requires steady seeing
Physical Properties
Magnitude
5.04
Spectral Type
F7V
Star Color
Yellow
(B-V 0.52)
Distance
54.4 ly
Position & Identifiers
RA
18h 07m 01.5s
Dec
+30° 33' 43.0"
Constellation
Her
HR
6775
HIP
88745
Flamsteed
99 Her
Double Cat
11077
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Multiple Star System
Components
3
Component IDs
AB
Separation
1.6″
Companion Mag
9.0
Position Angle
338°
Star Colors
A: Yellow
B: Red
Discoverer
AC 15
Eyepiece View
80x
Dawes: 1.9″
TFOV: 0.6°
Realistic = true angular size
Sep: 1.6″ · PA: 338° · 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 5.10 F7V, 8.50 K4V, 55.8y, a = 1.00".
Astrometric binary unresolved by speckle interferometry.
Metal deficient, calcium rich.
0.060".
Survey Image
Loading survey image…