Color composite thumbnail image of V-139873V-139873 (J013437.25+303817.7)


Target Notes

Color composite thumbnail image of V-139873

Classification: OB-Supergiant

No blend concerns.

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 17.48± 0.05-V-139873 in filter V on MJD 56140.370
---- 17.23± 0.11-V-139873 in filter R on MJD 56140.370
----
56599.17 17.52± 0.05-V-139873 in filter V on MJD 56599.170
 17.83± 0.06-V-139873 in filter B on MJD 56599.170
 17.23± 0.05-V-139873 in filter R on MJD 56599.170
----
56976.16 17.44± 0.04-V-139873 in filter V on MJD 56976.160
 17.79± 0.06-V-139873 in filter B on MJD 56976.160
 17.17± 0.05-V-139873 in filter R on MJD 56976.160
----
57038.13 17.40± 0.04-V-139873 in filter V on MJD 57038.130
 17.68± 0.05-V-139873 in filter B on MJD 57038.130
 17.13± 0.04-V-139873 in filter R on MJD 57038.130
----
57310.13 17.48± 0.06-V-139873 in filter V on MJD 57310.130
 17.74± 0.07-V-139873 in filter B on MJD 57310.130
 17.21± 0.05-V-139873 in filter R on MJD 57310.130
----
57335.18 17.44± 0.06-V-139873 in filter V on MJD 57335.180
---- 17.16± 0.04-V-139873 in filter R on MJD 57335.180
----
57401.10 17.50± 0.05-V-139873 in filter V on MJD 57401.100
 17.81± 0.06-V-139873 in filter B on MJD 57401.100
--------
57634.34 17.44± 0.04-V-139873 in filter V on MJD 57634.340
 17.78± 0.07-V-139873 in filter B on MJD 57634.340
 17.19± 0.05-V-139873 in filter R on MJD 57634.340
 16.88± 0.06-V-139873 in filter I on MJD 57634.340
57687.13 17.45± 0.04-V-139873 in filter V on MJD 57687.130
 17.73± 0.07-V-139873 in filter B on MJD 57687.130
 17.16± 0.04-V-139873 in filter R on MJD 57687.130
 16.91± 0.06-V-139873 in filter I on MJD 57687.130
57964.35 17.46± 0.04AV-139873 in filter V on MJD 57964.350
V-139873 in filter V on MJD 57964.350
 17.77± 0.06AV-139873 in filter B on MJD 57964.350
V-139873 in filter B on MJD 57964.350
 17.17± 0.05AV-139873 in filter R on MJD 57964.350
V-139873 in filter R on MJD 57964.350
 16.86± 0.06AV-139873 in filter I on MJD 57964.350
V-139873 in filter I on MJD 57964.350
58045.16 17.39± 0.05AV-139873 in filter V on MJD 58045.160
V-139873 in filter V on MJD 58045.160
 17.68± 0.07AV-139873 in filter B on MJD 58045.160
V-139873 in filter B on MJD 58045.160
 17.17± 0.05AV-139873 in filter R on MJD 58045.160
V-139873 in filter R on MJD 58045.160
----
58073.19 17.49± 0.04AV-139873 in filter V on MJD 58073.190
V-139873 in filter V on MJD 58073.190
 17.76± 0.07AV-139873 in filter B on MJD 58073.190
V-139873 in filter B on MJD 58073.190
--------
58103.16 17.39± 0.04AV-139873 in filter V on MJD 58103.160
V-139873 in filter V on MJD 58103.160
-------- 16.86± 0.06-V-139873 in filter I on MJD 58103.160
58108.11 17.37± 0.05-V-139873 in filter V on MJD 58108.110
 17.62± 0.08-V-139873 in filter B on MJD 58108.110
---- 16.73± 0.08-V-139873 in filter I on MJD 58108.110
58312.39 17.41± 0.05-V-139873 in filter V on MJD 58312.390
 17.70± 0.09-V-139873 in filter B on MJD 58312.390
--------
58316.38 17.42± 0.03-V-139873 in filter V on MJD 58316.380
 17.75± 0.05-V-139873 in filter B on MJD 58316.380
 17.13± 0.03-V-139873 in filter R on MJD 58316.380
 16.79± 0.05-V-139873 in filter I on MJD 58316.380
58317.37 17.41± 0.05-V-139873 in filter V on MJD 58317.370
 17.67± 0.07-V-139873 in filter B on MJD 58317.370
V-139873 in filter B on MJD 58317.370
 17.08± 0.04-V-139873 in filter R on MJD 58317.370
V-139873 in filter R on MJD 58317.370
----
58341.34 17.39± 0.06-V-139873 in filter V on MJD 58341.340
-------- 16.80± 0.07-V-139873 in filter I on MJD 58341.340
58342.38 17.45± 0.05AV-139873 in filter V on MJD 58342.380
V-139873 in filter V on MJD 58342.380
 17.70± 0.07AV-139873 in filter B on MJD 58342.380
V-139873 in filter B on MJD 58342.380
 17.15± 0.04AV-139873 in filter R on MJD 58342.380
V-139873 in filter R on MJD 58342.380
 16.73± 0.06-V-139873 in filter I on MJD 58342.380
V-139873 in filter I on MJD 58342.380
58375.14 17.38± 0.05-V-139873 in filter V on MJD 58375.140
---- 17.14± 0.05-V-139873 in filter R on MJD 58375.140
----
58420.08 17.39± 0.04AV-139873 in filter V on MJD 58420.080
V-139873 in filter V on MJD 58420.080
 17.67± 0.06AV-139873 in filter B on MJD 58420.080
V-139873 in filter B on MJD 58420.080
 17.11± 0.04-V-139873 in filter R on MJD 58420.080
 17.03± 0.07AV-139873 in filter I on MJD 58420.080
V-139873 in filter I on MJD 58420.080
58433.00 17.43± 0.05-V-139873 in filter V on MJD 58433.000
---- 17.18± 0.05-V-139873 in filter R on MJD 58433.000
 16.99± 0.07-V-139873 in filter I on MJD 58433.000
58672.39 17.56± 0.07-V-139873 in filter V on MJD 58672.390
---- 17.23± 0.05-V-139873 in filter R on MJD 58672.390
 16.91± 0.10-V-139873 in filter I on MJD 58672.390
58695.36 17.47± 0.05-V-139873 in filter V on MJD 58695.360
 17.74± 0.05-V-139873 in filter B on MJD 58695.360
 17.18± 0.04-V-139873 in filter R on MJD 58695.360
----
58784.12 17.47± 0.06-V-139873 in filter V on MJD 58784.120
 17.74± 0.05-V-139873 in filter B on MJD 58784.120
--------
58812.22 17.46± 0.05-V-139873 in filter V on MJD 58812.220
-------- 16.93± 0.05-V-139873 in filter I on MJD 58812.220
58902.07 17.44± 0.04-V-139873 in filter V on MJD 58902.070
---- 17.17± 0.04-V-139873 in filter R on MJD 58902.070
----
59059.38 17.42± 0.05-V-139873 in filter V on MJD 59059.380
 17.70± 0.06-V-139873 in filter B on MJD 59059.380
--------
59081.30 17.36± 0.04AV-139873 in filter V on MJD 59081.300
V-139873 in filter V on MJD 59081.300
 17.65± 0.06-V-139873 in filter B on MJD 59081.300
 17.09± 0.04AV-139873 in filter R on MJD 59081.300
V-139873 in filter R on MJD 59081.300
----
59084.34-------- 17.14± 0.04TV-139873 in filter R on MJD 59084.340
----
59161.07 17.45± 0.05-V-139873 in filter V on MJD 59161.070
 17.76± 0.06-V-139873 in filter B on MJD 59161.070
 17.19± 0.04-V-139873 in filter R on MJD 59161.070
----
59171.09 17.37± 0.05-V-139873 in filter V on MJD 59171.090
-------- 16.79± 0.06-V-139873 in filter I on MJD 59171.090
59227.08 17.48± 0.04-V-139873 in filter V on MJD 59227.080
 17.80± 0.04-V-139873 in filter B on MJD 59227.080
 17.20± 0.04-V-139873 in filter R on MJD 59227.080
----
59415.36 17.47± 0.05-V-139873 in filter V on MJD 59415.360
---- 17.14± 0.04-V-139873 in filter R on MJD 59415.360
----
59441.39 17.44± 0.05-V-139873 in filter V on MJD 59441.390
 17.72± 0.06-V-139873 in filter B on MJD 59441.390
--------
59463.30 17.40± 0.05AV-139873 in filter V on MJD 59463.300
V-139873 in filter V on MJD 59463.300
-------- 16.88± 0.05-V-139873 in filter I on MJD 59463.300
59523.15 17.40± 0.04-V-139873 in filter V on MJD 59523.150
---- 17.13± 0.04-V-139873 in filter R on MJD 59523.150
----
59525.15 17.44± 0.04-V-139873 in filter V on MJD 59525.150
 17.76± 0.05-V-139873 in filter B on MJD 59525.150
--------
59546.15 17.44± 0.04-V-139873 in filter V on MJD 59546.150
-------- 16.83± 0.05-V-139873 in filter I on MJD 59546.150
59551.11 17.43± 0.04-V-139873 in filter V on MJD 59551.110
 17.70± 0.05-V-139873 in filter B on MJD 59551.110
--------
59583.15 17.43± 0.04-V-139873 in filter V on MJD 59583.150
---- 17.13± 0.05-V-139873 in filter R on MJD 59583.150
----
59608.07 17.42± 0.04-V-139873 in filter V on MJD 59608.070
-------- 16.80± 0.06-V-139873 in filter I on MJD 59608.070
59794.35 17.44± 0.04TV-139873 in filter V on MJD 59794.350
------------
59823.24 17.42± 0.04-V-139873 in filter V on MJD 59823.240
 17.70± 0.05-V-139873 in filter B on MJD 59823.240
--------
59851.13 17.40± 0.04-V-139873 in filter V on MJD 59851.130
---- 17.13± 0.04-V-139873 in filter R on MJD 59851.130
----
59854.22 17.43± 0.04-V-139873 in filter V on MJD 59854.220
 17.72± 0.06-V-139873 in filter B on MJD 59854.220
--------
59879.12 17.36± 0.04-V-139873 in filter V on MJD 59879.120
-------- 16.91± 0.06AV-139873 in filter I on MJD 59879.120
V-139873 in filter I on MJD 59879.120
59904.12 17.43± 0.04-V-139873 in filter V on MJD 59904.120
 17.76± 0.05-V-139873 in filter B on MJD 59904.120
 17.16± 0.04-V-139873 in filter R on MJD 59904.120
 16.89± 0.06-V-139873 in filter I on MJD 59904.120
59932.13 17.41± 0.06-V-139873 in filter V on MJD 59932.130
---- 17.11± 0.05-V-139873 in filter R on MJD 59932.130
----
60172.37 17.42± 0.04-V-139873 in filter V on MJD 60172.370
 17.72± 0.05-V-139873 in filter B on MJD 60172.370
--------
60205.15 17.42± 0.05-V-139873 in filter V on MJD 60205.150
---- 17.16± 0.05-V-139873 in filter R on MJD 60205.150
----
60227.12 17.43± 0.05-V-139873 in filter V on MJD 60227.120
-------- 16.95± 0.06-V-139873 in filter I on MJD 60227.120
60262.13 17.39± 0.04-V-139873 in filter V on MJD 60262.130
 17.73± 0.05-V-139873 in filter B on MJD 60262.130
 17.14± 0.05-V-139873 in filter R on MJD 60262.130
----
60290.15 17.42± 0.04-V-139873 in filter V on MJD 60290.150
 17.74± 0.05-V-139873 in filter B on MJD 60290.150
---- 16.75± 0.06-V-139873 in filter I on MJD 60290.150
60292.18 17.43± 0.04-V-139873 in filter V on MJD 60292.180
---- 17.14± 0.05-V-139873 in filter R on MJD 60292.180
----
60342.08 17.41± 0.04-V-139873 in filter V on MJD 60342.080
---- 17.11± 0.05-V-139873 in filter R on MJD 60342.080
----
60504.38 17.41± 0.04-V-139873 in filter V on MJD 60504.380
 17.80± 0.05-V-139873 in filter B on MJD 60504.380
 17.13± 0.05-V-139873 in filter R on MJD 60504.380
----
60529.36 17.38± 0.05-V-139873 in filter V on MJD 60529.360
-------- 16.89± 0.06-V-139873 in filter I on MJD 60529.360
60556.24 17.44± 0.04-V-139873 in filter V on MJD 60556.240
 17.73± 0.05-V-139873 in filter B on MJD 60556.240
 17.14± 0.04-V-139873 in filter R on MJD 60556.240
----
60594.10 17.46± 0.06-V-139873 in filter V on MJD 60594.100
-------- 17.11± 0.07-V-139873 in filter I on MJD 60594.100
60612.14 17.42± 0.05-V-139873 in filter V on MJD 60612.140
---- 17.14± 0.06-V-139873 in filter R on MJD 60612.140
----
60651.14 17.44± 0.04-V-139873 in filter V on MJD 60651.140
 17.76± 0.05-V-139873 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 V-139873Plot of color for V-139873

Key for Plot Variability Photometry Table Target Notes

Variability

Plot/Graph Photometry Table Target Notes

From the data available in this survey, it is not possible to tell with certainty if 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 [0.21 mag]B [0.21 mag]R [0.16 mag]
B [0.21 mag]0.55 (34)
R [0.16 mag]0.65 (35)0.50 (20)
I [0.38 mag]0.07 (22)0.02 (9)0.00 (9)

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 V-139873

Plot to assess correlation between bands for V-139873

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)		0.44 | 1.00
R
(I|R)		0.48 | 1.041.28 | 0.05
I
(I|R)		0.21 | 0.570.08 | 0.450.12 | 0.50

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