Color composite thumbnail image of V-058746V-058746 (J013335.33+304146.1)



Target Notes

Color composite thumbnail image of V-058746

Classification: foreground

In a crowd but > 3 mag brighter than all around it. Two LGGS within about 2 magnitudes fainter within 5--6 arcseconds.

Find In Simbad Query LGGS Massey (2016) at VizieR Query CAT WISE (Eisenhardt et al., 2020) at VizieR Query Gaia EDR3 (2020) at VizieR
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
56140.39 17.55± 0.04bV-058746 in filter V on MJD  56140.390
---- 16.88± 0.10bV-058746 in filter R on MJD  56140.390
----
56593.16 17.60± 0.04bV-058746 in filter V on MJD  56593.160
18.47± 0.04bV-058746 in filter B on MJD  56593.160
--------
56599.19 17.56± 0.04bV-058746 in filter V on MJD  56599.190
18.37± 0.04bV-058746 in filter B on MJD  56599.190
16.87± 0.06bV-058746 in filter R on MJD  56599.190
----
56976.19 17.55± 0.04bV-058746 in filter V on MJD  56976.190
18.39± 0.06bV-058746 in filter B on MJD  56976.190
16.87± 0.06bV-058746 in filter R on MJD  56976.190
----
57328.16 17.50± 0.04bV-058746 in filter V on MJD  57328.160
18.30± 0.04bV-058746 in filter B on MJD  57328.160
16.83± 0.04bV-058746 in filter R on MJD  57328.160
----
57406.10 17.54± 0.06bV-058746 in filter V on MJD  57406.100
18.23± 0.10bV-058746 in filter B on MJD  57406.100
16.79± 0.05bV-058746 in filter R on MJD  57406.100
16.49± 0.07bV-058746 in filter I on MJD  57406.100
57634.38 17.49± 0.04bV-058746 in filter V on MJD  57634.380
18.35± 0.06bV-058746 in filter B on MJD  57634.380
16.86± 0.06bV-058746 in filter R on MJD  57634.380
16.54± 0.09bV-058746 in filter I on MJD  57634.380
57988.41 17.53± 0.05bV-058746 in filter V on MJD  57988.410
18.39± 0.05bV-058746 in filter B on MJD  57988.410
--------
58043.10 17.50± 0.04bV-058746 in filter V on MJD  58043.100
---- 16.81± 0.04bV-058746 in filter R on MJD  58043.100
16.52± 0.07bV-058746 in filter I on MJD  58043.100
58103.17 17.53± 0.05bV-058746 in filter V on MJD  58103.170
18.39± 0.05bV-058746 in filter B on MJD  58103.170
--------
58108.14 17.55± 0.05bV-058746 in filter V on MJD  58108.140
18.37± 0.07bV-058746 in filter B on MJD  58108.140
---- 16.49± 0.08bV-058746 in filter I on MJD  58108.140
58317.39 17.50± 0.05bV-058746 in filter V on MJD  58317.390
---- 16.88± 0.07bV-058746 in filter R on MJD  58317.390
----
58341.40 17.61± 0.06bV-058746 in filter V on MJD  58341.400
18.41± 0.08bV-058746 in filter B on MJD  58341.400
16.98± 0.07bV-058746 in filter R on MJD  58341.400
16.53± 0.10bV-058746 in filter I on MJD  58341.400
58373.15 17.45± 0.06bV-058746 in filter V on MJD  58373.150
18.43± 0.07bV-058746 in filter B on MJD  58373.150
--------
58433.00 17.62± 0.06bV-058746 in filter V on MJD  58433.000
---- 16.83± 0.05bV-058746 in filter R on MJD  58433.000
16.55± 0.06bV-058746 in filter I on MJD  58433.000
58673.38 17.50± 0.03bV-058746 in filter V on MJD  58673.380
18.35± 0.05bV-058746 in filter B on MJD  58673.380
--------
58750.19 17.52± 0.04bV-058746 in filter V on MJD  58750.190
---- 16.85± 0.05bV-058746 in filter R on MJD  58750.190
----
58779.18 17.52± 0.04bV-058746 in filter V on MJD  58779.180
18.22± 0.05bV-058746 in filter B on MJD  58779.180
--------
58902.06 17.49± 0.04AbV-058746 in filter V on MJD  58902.060
V-058746 in filter V on MJD  58902.060
---- 16.81± 0.04bV-058746 in filter R on MJD  58902.060
16.49± 0.07bV-058746 in filter I on MJD  58902.060
59056.38 17.55± 0.04bV-058746 in filter V on MJD  59056.380
18.33± 0.06bV-058746 in filter B on MJD  59056.380
16.84± 0.05bV-058746 in filter R on MJD  59056.380
16.49± 0.07bV-058746 in filter I on MJD  59056.380
59081.33 17.52± 0.03bV-058746 in filter V on MJD  59081.330
18.32± 0.06bV-058746 in filter B on MJD  59081.330
16.89± 0.03bV-058746 in filter R on MJD  59081.330
----
59082.32 17.56± 0.02bV-058746 in filter V on MJD  59082.320
18.41± 0.04bV-058746 in filter B on MJD  59082.320
V-058746 in filter B on MJD  59082.320
16.86± 0.04bV-058746 in filter R on MJD  59082.320
V-058746 in filter R on MJD  59082.320
----
59084.29-------- 16.83± 0.06TbV-058746 in filter R on MJD  59084.290
----
59161.11 17.54± 0.03bV-058746 in filter V on MJD  59161.110
18.61± 0.05bV-058746 in filter B on MJD  59161.110
16.95± 0.05bV-058746 in filter R on MJD  59161.110
----
59171.11 17.50± 0.04AbV-058746 in filter V on MJD  59171.110
V-058746 in filter V on MJD  59171.110
18.39± 0.04bV-058746 in filter B on MJD  59171.110
---- 16.53± 0.07AbV-058746 in filter I on MJD  59171.110
V-058746 in filter I on MJD  59171.110
59227.09 17.50± 0.03AbV-058746 in filter V on MJD  59227.090
V-058746 in filter V on MJD  59227.090
18.44± 0.05AbV-058746 in filter B on MJD  59227.090
V-058746 in filter B on MJD  59227.090
16.84± 0.04bV-058746 in filter R on MJD  59227.090
----
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-058746Plot of color for V-058746

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 [0.40 mag]B [0.17 mag]R [0.19 mag]
B [0.40 mag]0.04 (19)
R [0.19 mag]0.17 (17)0.46 (11)
I [0.07 mag]0.12 (9)0.31 (6)0.17 (7)

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-058746

Plot to assess correlation between bands for V-058746

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)
0.51 | 1.44
R
(I|R)
0.31 | 1.117.10 | 0.04
I
(I|R)
0.10 | 2.920.12 | 2.370.12 | 2.19

Back to catalog index


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

Generated on 2021-11-06 16:53:54 UT-5