Color composite thumbnail image of M33-013416.44M33-013416.44 (J013416.44+303120.8)


Target Notes

Color composite thumbnail image of M33-013416.44

Classification: OB-Supergiant

Resolved from J013416.71+303122.8 of comparable brightness 4 arcseconds NE.

Find In Simbad Query LGGS Massey (2016) at VizieR Query CAT WISE (Eisenhardt et al., 2020) at VizieR Query Gaia DR3 (2022) at VizieR LBT Spectra @UMN
Query M33 Variability Hartman et al. Survey (2006) at VizieR

Photometry Table

Download table (txt) Key to Flags in Table Key For Images Plot/Graph Variability
MJDV*ImageB*ImageR*ImagesI*Images
56140.37 17.16± 0.05-M33-013416.44 in filter V on MJD 56140.370
---- 16.91± 0.09-M33-013416.44 in filter R on MJD 56140.370
----
56599.17 17.27± 0.05-M33-013416.44 in filter V on MJD 56599.170
 17.20± 0.06-M33-013416.44 in filter B on MJD 56599.170
 17.13± 0.05-M33-013416.44 in filter R on MJD 56599.170
----
56976.16 17.13± 0.04-M33-013416.44 in filter V on MJD 56976.160
 17.14± 0.06-M33-013416.44 in filter B on MJD 56976.160
 16.99± 0.05-M33-013416.44 in filter R on MJD 56976.160
----
56982.22 17.07± 0.06-M33-013416.44 in filter V on MJD 56982.220
 17.06± 0.06-M33-013416.44 in filter B on MJD 56982.220
 16.96± 0.07-M33-013416.44 in filter R on MJD 56982.220
----
57038.13 17.24± 0.04-M33-013416.44 in filter V on MJD 57038.130
 17.17± 0.05-M33-013416.44 in filter B on MJD 57038.130
 17.12± 0.04-M33-013416.44 in filter R on MJD 57038.130
----
57310.13 17.05± 0.06XM33-013416.44 in filter V on MJD 57310.130
 17.15± 0.07-M33-013416.44 in filter B on MJD 57310.130
 17.10± 0.05-M33-013416.44 in filter R on MJD 57310.130
----
57328.19 17.26± 0.05-M33-013416.44 in filter V on MJD 57328.190
 17.23± 0.07-M33-013416.44 in filter B on MJD 57328.190
 17.12± 0.07-M33-013416.44 in filter R on MJD 57328.190
----
57335.18 17.22± 0.06-M33-013416.44 in filter V on MJD 57335.180
---- 17.15± 0.04-M33-013416.44 in filter R on MJD 57335.180
----
57401.10 17.26± 0.04-M33-013416.44 in filter V on MJD 57401.100
 17.31± 0.06-M33-013416.44 in filter B on MJD 57401.100
--------
57406.10 17.30± 0.05-M33-013416.44 in filter V on MJD 57406.100
 17.36± 0.06-M33-013416.44 in filter B on MJD 57406.100
 17.17± 0.05-M33-013416.44 in filter R on MJD 57406.100
 17.01± 0.08-M33-013416.44 in filter I on MJD 57406.100
57634.37 17.26± 0.06AM33-013416.44 in filter V on MJD 57634.370
M33-013416.44 in filter V on MJD 57634.370
 17.25± 0.08AM33-013416.44 in filter B on MJD 57634.370
M33-013416.44 in filter B on MJD 57634.370
 17.15± 0.07AM33-013416.44 in filter R on MJD 57634.370
M33-013416.44 in filter R on MJD 57634.370
 17.20± 0.06-M33-013416.44 in filter I on MJD 57634.370
57638.43 17.30± 0.06-M33-013416.44 in filter V on MJD 57638.430
-------- 17.07± 0.10-M33-013416.44 in filter I on MJD 57638.430
57687.13 17.25± 0.04-M33-013416.44 in filter V on MJD 57687.130
 17.28± 0.06-M33-013416.44 in filter B on MJD 57687.130
 17.11± 0.04-M33-013416.44 in filter R on MJD 57687.130
 17.04± 0.07-M33-013416.44 in filter I on MJD 57687.130
57964.33 17.35± 0.05-M33-013416.44 in filter V on MJD 57964.330
 17.36± 0.07-M33-013416.44 in filter B on MJD 57964.330
 17.25± 0.05-M33-013416.44 in filter R on MJD 57964.330
 17.10± 0.07-M33-013416.44 in filter I on MJD 57964.330
58045.18 17.33± 0.05-M33-013416.44 in filter V on MJD 58045.180
 17.30± 0.07-M33-013416.44 in filter B on MJD 58045.180
 17.29± 0.06-M33-013416.44 in filter R on MJD 58045.180
----
58073.20 17.35± 0.05-M33-013416.44 in filter V on MJD 58073.200
 17.29± 0.07-M33-013416.44 in filter B on MJD 58073.200
--------
58103.18 17.24± 0.05TM33-013416.44 in filter V on MJD 58103.180
------------
58108.11 17.17± 0.05-M33-013416.44 in filter V on MJD 58108.110
 17.10± 0.08-M33-013416.44 in filter B on MJD 58108.110
---- 17.07± 0.09-M33-013416.44 in filter I on MJD 58108.110
58312.39 17.14± 0.05-M33-013416.44 in filter V on MJD 58312.390
 17.10± 0.07-M33-013416.44 in filter B on MJD 58312.390
--------
58317.37 17.17± 0.04-M33-013416.44 in filter V on MJD 58317.370
 17.15± 0.07-M33-013416.44 in filter B on MJD 58317.370
 17.07± 0.04-M33-013416.44 in filter R on MJD 58317.370
----
58341.34 17.16± 0.06-M33-013416.44 in filter V on MJD 58341.340
-------- 16.95± 0.07-M33-013416.44 in filter I on MJD 58341.340
58342.40 17.24± 0.06-M33-013416.44 in filter V on MJD 58342.400
 17.21± 0.07-M33-013416.44 in filter B on MJD 58342.400
 17.18± 0.05-M33-013416.44 in filter R on MJD 58342.400
----
58375.14 17.25± 0.05-M33-013416.44 in filter V on MJD 58375.140
---- 17.16± 0.05-M33-013416.44 in filter R on MJD 58375.140
----
58420.10 17.38± 0.05-M33-013416.44 in filter V on MJD 58420.100
 17.38± 0.06-M33-013416.44 in filter B on MJD 58420.100
---- 17.25± 0.08-M33-013416.44 in filter I on MJD 58420.100
58433.00 17.17± 0.05-M33-013416.44 in filter V on MJD 58433.000
---- 17.04± 0.05-M33-013416.44 in filter R on MJD 58433.000
 16.75± 0.06-M33-013416.44 in filter I on MJD 58433.000
58672.39 17.14± 0.07-M33-013416.44 in filter V on MJD 58672.390
---- 17.00± 0.05-M33-013416.44 in filter R on MJD 58672.390
 16.99± 0.12-M33-013416.44 in filter I on MJD 58672.390
58695.36 17.13± 0.05-M33-013416.44 in filter V on MJD 58695.360
 17.12± 0.05-M33-013416.44 in filter B on MJD 58695.360
 17.02± 0.04-M33-013416.44 in filter R on MJD 58695.360
----
58757.17 17.18± 0.05-M33-013416.44 in filter V on MJD 58757.170
---- 17.06± 0.05-M33-013416.44 in filter R on MJD 58757.170
----
58784.14 17.20± 0.05AM33-013416.44 in filter V on MJD 58784.140
M33-013416.44 in filter V on MJD 58784.140
 17.17± 0.05-M33-013416.44 in filter B on MJD 58784.140
---- 16.91± 0.08-M33-013416.44 in filter I on MJD 58784.140
58812.22 17.12± 0.05-M33-013416.44 in filter V on MJD 58812.220
-------- 16.94± 0.06-M33-013416.44 in filter I on MJD 58812.220
58902.07 17.25± 0.04-M33-013416.44 in filter V on MJD 58902.070
---- 17.18± 0.04-M33-013416.44 in filter R on MJD 58902.070
----
59059.38 17.12± 0.05-M33-013416.44 in filter V on MJD 59059.380
 17.14± 0.06-M33-013416.44 in filter B on MJD 59059.380
--------
59081.26 17.05± 0.05-M33-013416.44 in filter V on MJD 59081.260
---- 16.94± 0.05-M33-013416.44 in filter R on MJD 59081.260
----
59084.38-------- 16.89± 0.07TM33-013416.44 in filter R on MJD 59084.380
----
59161.07 17.12± 0.05-M33-013416.44 in filter V on MJD 59161.070
 17.13± 0.06-M33-013416.44 in filter B on MJD 59161.070
 17.00± 0.04-M33-013416.44 in filter R on MJD 59161.070
----
59171.09 17.03± 0.05-M33-013416.44 in filter V on MJD 59171.090
-------- 16.83± 0.06-M33-013416.44 in filter I on MJD 59171.090
59227.12 17.17± 0.04AM33-013416.44 in filter V on MJD 59227.120
M33-013416.44 in filter V on MJD 59227.120
 17.12± 0.05AM33-013416.44 in filter B on MJD 59227.120
M33-013416.44 in filter B on MJD 59227.120
 17.03± 0.04AM33-013416.44 in filter R on MJD 59227.120
M33-013416.44 in filter R on MJD 59227.120
 16.96± 0.08-M33-013416.44 in filter I on MJD 59227.120
59415.36 17.08± 0.05-M33-013416.44 in filter V on MJD 59415.360
---- 16.94± 0.04-M33-013416.44 in filter R on MJD 59415.360
----
59441.39 17.09± 0.05-M33-013416.44 in filter V on MJD 59441.390
 17.09± 0.06-M33-013416.44 in filter B on MJD 59441.390
--------
59463.30 17.13± 0.05AM33-013416.44 in filter V on MJD 59463.300
M33-013416.44 in filter V on MJD 59463.300
-------- 16.93± 0.05-M33-013416.44 in filter I on MJD 59463.300
59523.15 17.19± 0.04-M33-013416.44 in filter V on MJD 59523.150
---- 17.07± 0.04-M33-013416.44 in filter R on MJD 59523.150
----
59525.15 17.19± 0.04-M33-013416.44 in filter V on MJD 59525.150
 17.19± 0.05-M33-013416.44 in filter B on MJD 59525.150
--------
59546.15 17.20± 0.04-M33-013416.44 in filter V on MJD 59546.150
-------- 16.95± 0.05-M33-013416.44 in filter I on MJD 59546.150
59551.11 17.32± 0.05-M33-013416.44 in filter V on MJD 59551.110
 17.31± 0.06-M33-013416.44 in filter B on MJD 59551.110
--------
59583.15 17.24± 0.04-M33-013416.44 in filter V on MJD 59583.150
---- 17.12± 0.05-M33-013416.44 in filter R on MJD 59583.150
----
59608.07 17.24± 0.04-M33-013416.44 in filter V on MJD 59608.070
-------- 16.89± 0.06-M33-013416.44 in filter I on MJD 59608.070
59794.35 17.07± 0.04TM33-013416.44 in filter V on MJD 59794.350
------------
59823.24 17.16± 0.04-M33-013416.44 in filter V on MJD 59823.240
 17.18± 0.05-M33-013416.44 in filter B on MJD 59823.240
--------
59851.17 17.15± 0.05AM33-013416.44 in filter V on MJD 59851.170
M33-013416.44 in filter V on MJD 59851.170
 17.15± 0.04-M33-013416.44 in filter B on MJD 59851.170
 16.99± 0.05-M33-013416.44 in filter R on MJD 59851.170
 16.92± 0.09-M33-013416.44 in filter I on MJD 59851.170
59854.22 17.14± 0.05-M33-013416.44 in filter V on MJD 59854.220
 17.11± 0.06-M33-013416.44 in filter B on MJD 59854.220
--------
59879.12 17.11± 0.10-M33-013416.44 in filter V on MJD 59879.120
-------- 16.93± 0.06AM33-013416.44 in filter I on MJD 59879.120
M33-013416.44 in filter I on MJD 59879.120
59904.12 17.12± 0.04-M33-013416.44 in filter V on MJD 59904.120
 17.14± 0.05-M33-013416.44 in filter B on MJD 59904.120
 17.03± 0.04-M33-013416.44 in filter R on MJD 59904.120
 16.89± 0.06-M33-013416.44 in filter I on MJD 59904.120
59932.13 17.11± 0.06-M33-013416.44 in filter V on MJD 59932.130
---- 17.00± 0.05-M33-013416.44 in filter R on MJD 59932.130
----
60172.37 17.22± 0.04-M33-013416.44 in filter V on MJD 60172.370
 17.22± 0.05-M33-013416.44 in filter B on MJD 60172.370
--------
60205.15 17.14± 0.05-M33-013416.44 in filter V on MJD 60205.150
---- 17.01± 0.05-M33-013416.44 in filter R on MJD 60205.150
----
60227.12 17.14± 0.05-M33-013416.44 in filter V on MJD 60227.120
-------- 16.86± 0.07-M33-013416.44 in filter I on MJD 60227.120
60262.13 17.16± 0.04-M33-013416.44 in filter V on MJD 60262.130
 17.20± 0.05-M33-013416.44 in filter B on MJD 60262.130
 17.06± 0.05-M33-013416.44 in filter R on MJD 60262.130
----
60290.19 17.22± 0.05AM33-013416.44 in filter V on MJD 60290.190
M33-013416.44 in filter V on MJD 60290.190
 17.23± 0.05AM33-013416.44 in filter B on MJD 60290.190
M33-013416.44 in filter B on MJD 60290.190
---- 17.00± 0.08AM33-013416.44 in filter I on MJD 60290.190
M33-013416.44 in filter I on MJD 60290.190
60292.18 17.16± 0.04-M33-013416.44 in filter V on MJD 60292.180
---- 17.08± 0.05-M33-013416.44 in filter R on MJD 60292.180
----
60342.08 17.18± 0.04-M33-013416.44 in filter V on MJD 60342.080
---- 17.06± 0.05-M33-013416.44 in filter R on MJD 60342.080
----
60504.38 17.18± 0.04-M33-013416.44 in filter V on MJD 60504.380
 17.16± 0.05-M33-013416.44 in filter B on MJD 60504.380
 17.03± 0.05-M33-013416.44 in filter R on MJD 60504.380
----
60529.38 17.23± 0.05AM33-013416.44 in filter V on MJD 60529.380
M33-013416.44 in filter V on MJD 60529.380
 17.25± 0.07-M33-013416.44 in filter B on MJD 60529.380
 17.13± 0.05-M33-013416.44 in filter R on MJD 60529.380
 17.02± 0.06-M33-013416.44 in filter I on MJD 60529.380
60556.24 17.16± 0.04-M33-013416.44 in filter V on MJD 60556.240
 17.15± 0.05-M33-013416.44 in filter B on MJD 60556.240
 17.02± 0.04-M33-013416.44 in filter R on MJD 60556.240
----
60592.14 17.23± 0.07-M33-013416.44 in filter V on MJD 60592.140
 17.49± 0.05XM33-013416.44 in filter B on MJD 60592.140
 17.11± 0.05-M33-013416.44 in filter R on MJD 60592.140
----
60594.10 17.07± 0.06-M33-013416.44 in filter V on MJD 60594.100
-------- 16.89± 0.07-M33-013416.44 in filter I on MJD 60594.100
60612.14 17.11± 0.05-M33-013416.44 in filter V on MJD 60612.140
---- 16.99± 0.06-M33-013416.44 in filter R on MJD 60612.140
----
60651.14 17.11± 0.04-M33-013416.44 in filter V on MJD 60651.140
 17.12± 0.05-M33-013416.44 in filter B on MJD 60651.140
--------
Download table (txt) Key to Flags in Table Key For Images Plot/Graph Variability

Plots of Brightness and Color

Key for Plot Variability Photometry Table Target Notes

Plot of photometry for M33-013416.44Plot of color for M33-013416.44

Key for Plot Variability Photometry Table Target Notes

Variability

Plot/Graph Photometry Table Target Notes

It is very likely that this star is variable.

Correlation factors between bands

If the brightness variation is true variability then there should be a correlation between brightness changes recorded in different filter bands. The following table are the R-squared linear correlation factors calculated for the pairs of bands. The number in parentheses next to the R-squared value is the number of elements used to calculate the correlation factor. The number in square brackets next to the band is the range of magnitudes measured.

V [0.35 mag]B [0.32 mag]R [0.39 mag]
B [0.32 mag]0.85 (36)
R [0.39 mag]0.86 (38)0.73 (22)
I [0.50 mag]0.53 (24)0.37 (12)0.45 (10)

Magnitude-Magnitude Plots

The plots below are provided to check the values in the table above and also to show any non-linear correlations

Plot to assess correlation between bands for M33-013416.44

Plot to assess correlation between bands for M33-013416.44

Plot/Graph Photometry Table Target Notes

I & R Statistics

Welch & Stetson (1993, AJ, 105, 1813) present a method for varible star detection in CCD images from automated surveys. Data from two bands are compared and two statistics are calculated: R and I.

The I-statistic has an expectation value of zero for stars that are NOT variable. A larger non-zero I-value indicates a higher likelihood that the star is variable. The R statistic indicates how the color of the star changes as the variable grows brighter with R = 1.0 being no change in color.

R and I values have only been calculated if there are more than four (4) matched measurements of brightness in each band.
V
(I|R)		B
(I|R)		R
(I|R)
B
(I|R)		2.02 | 0.81
R
(I|R)		2.17 | 0.891.59 | 0.44
I
(I|R)		1.92 | 1.131.53 | 1.181.87 | 1.07

Back to catalog index

By John C. Martin, University of Illinois Springfield Henry R. Barber Research Observatory

Generated on 2025-08-04 15:53:14 UT-5