T Mon
Excellent (70/100)
HIP 30541
VariableStar
Mon
Visible
Level 1
Naked eye / Binoculars - Monitor brightness changes
Physical Properties
Magnitude
5.98
Range
5.6 - 6.6
Period
27.0 days
Variable Type
Classical Cepheid
Spectral Type
F7Iab-K1Iab
Star Color
Red
(B-V 1.22)
Distance
652 ly
Position & Identifiers
RA
06h 25m 13.1s
Dec
+07° 05' 09.0"
Constellation
Mon
HR
2310
HIP
30541
Variable ID
T Mon
Querying VizieR catalog...
Visibility
Set a location in User Settings to see visibility data.
Light Curve
Comparison Stars for T Mon (5.6–6.6)
Nearby stable stars for estimating brightness (AAVSO)
Loading comparison stars…
Multiple Star System B,C: optical
Separation
6.5″
Companion Mag
17.7
Position Angle
276°
Star Colors
A: Red
Discoverer
EVS 11
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 Fusion
Stellar Notes
CDelta 5.58 - 6.62V, 27.0205d since 1933. Period has increased from 27.0093 before 1900, with mean value 27.024649d.
IUE observations suggest an early-type companion, about A0.
Survey Image
Loading survey image…