M31/M33 Catalog: Photometry for M31-003930.79


Open a color composite thumbnail image of M31-003930.79M31-003930.79 (J003930.79+401841.1)


Target Notes

Open a color composite thumbnail image of M31-003930.79

Classification: -

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
Query Kaluzny et al. (1998) M31 Survey at VizieR
Query POINT-AGAPE An et al. (2004) M31 Survey at VizieR

Photometry Table

Download table (txt) Key to Flags in Table Key For Images Plot/Graph Variability
MJDV*ImageB*ImageR*ImagesI*Images
56604.11 16.99± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 56604.110
 17.43± 0.04-Open a thumnail image of M31-003930.79 in filter B on MJD 56604.110
 16.71± 0.05-Open a thumnail image of M31-003930.79 in filter R on MJD 56604.110
----
56930.16 17.00± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 56930.160
 17.43± 0.04-Open a thumnail image of M31-003930.79 in filter B on MJD 56930.160
 16.72± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 56930.160
----
56951.10 17.03± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 56951.100
 17.46± 0.03-Open a thumnail image of M31-003930.79 in filter B on MJD 56951.100
 16.73± 0.05-Open a thumnail image of M31-003930.79 in filter R on MJD 56951.100
----
57307.14 17.06± 0.04AOpen a thumbnail image of M31-003930.79 in filter V on MJD 57307.140
Open a thumbnail image of M31-003930.79 in filter V on MJD 57307.140
 17.53± 0.04AOpen a thumnail image of M31-003930.79 in filter B on MJD 57307.140
Open a thumnail image of M31-003930.79 in filter B on MJD 57307.140
 16.73± 0.04AOpen a thumnail image of M31-003930.79 in filter R on MJD 57307.140
Open a thumnail image of M31-003930.79 in filter R on MJD 57307.140
----
57340.22 16.94± 0.06-Open a thumbnail image of M31-003930.79 in filter V on MJD 57340.220
-------- 16.37± 0.08-Open a thumnail image of M31-003930.79 in filter I on MJD 57340.220
57635.32 17.04± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 57635.320
 17.45± 0.04-Open a thumnail image of M31-003930.79 in filter B on MJD 57635.320
 16.76± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 57635.320
 16.43± 0.05-Open a thumnail image of M31-003930.79 in filter I on MJD 57635.320
57963.35 16.95± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 57963.350
 17.39± 0.03-Open a thumnail image of M31-003930.79 in filter B on MJD 57963.350
---- 16.34± 0.07-Open a thumnail image of M31-003930.79 in filter I on MJD 57963.350
58035.07 16.93± 0.06-Open a thumbnail image of M31-003930.79 in filter V on MJD 58035.070
---- 16.67± 0.07-Open a thumnail image of M31-003930.79 in filter R on MJD 58035.070
----
58077.14 17.00± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 58077.140
 17.42± 0.03-Open a thumnail image of M31-003930.79 in filter B on MJD 58077.140
---- 16.39± 0.07-Open a thumnail image of M31-003930.79 in filter I on MJD 58077.140
58317.33 16.96± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 58317.330
-------- 16.42± 0.07-Open a thumnail image of M31-003930.79 in filter I on MJD 58317.330
58339.32 17.00± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 58339.320
 17.43± 0.04-Open a thumnail image of M31-003930.79 in filter B on MJD 58339.320
 16.70± 0.05-Open a thumnail image of M31-003930.79 in filter R on MJD 58339.320
----
58373.13 16.98± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 58373.130
 17.37± 0.05-Open a thumnail image of M31-003930.79 in filter B on MJD 58373.130
--------
58672.36 16.91± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 58672.360
---- 16.68± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 58672.360
 16.36± 0.05-Open a thumnail image of M31-003930.79 in filter I on MJD 58672.360
58695.27 16.95± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 58695.270
 17.40± 0.04-Open a thumnail image of M31-003930.79 in filter B on MJD 58695.270
--------
58779.11 16.99± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 58779.110
---- 16.70± 0.03-Open a thumnail image of M31-003930.79 in filter R on MJD 58779.110
----
59019.39 16.96± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 59019.390
 17.38± 0.07-Open a thumnail image of M31-003930.79 in filter B on MJD 59019.390
--------
59059.26 16.99± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 59059.260
 17.43± 0.03-Open a thumnail image of M31-003930.79 in filter B on MJD 59059.260
 16.70± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 59059.260
----
59081.20 16.98± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 59081.200
-------- 16.35± 0.07-Open a thumnail image of M31-003930.79 in filter I on MJD 59081.200
59131.16 16.97± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 59131.160
 17.38± 0.04-Open a thumnail image of M31-003930.79 in filter B on MJD 59131.160
--------
59166.23 16.98± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 59166.230
-------- 16.40± 0.07-Open a thumnail image of M31-003930.79 in filter I on MJD 59166.230
59194.18 16.91± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 59194.180
---- 16.63± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 59194.180
----
59380.38 16.94± 0.06-Open a thumbnail image of M31-003930.79 in filter V on MJD 59380.380
---- 16.64± 0.06-Open a thumnail image of M31-003930.79 in filter R on MJD 59380.380
----
59441.35 17.00± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 59441.350
 17.44± 0.03-Open a thumnail image of M31-003930.79 in filter B on MJD 59441.350
--------
59463.12 16.95± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 59463.120
-------- 16.39± 0.06-Open a thumnail image of M31-003930.79 in filter I on MJD 59463.120
59483.13 16.92± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 59483.130
---- 16.63± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 59483.130
----
59523.06 16.96± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 59523.060
 17.43± 0.04-Open a thumnail image of M31-003930.79 in filter B on MJD 59523.060
--------
59548.11 16.97± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 59548.110
---- 16.66± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 59548.110
 16.38± 0.06-Open a thumnail image of M31-003930.79 in filter I on MJD 59548.110
59759.37 16.91± 0.05-Open a thumbnail image of M31-003930.79 in filter V on MJD 59759.370
 17.35± 0.05-Open a thumnail image of M31-003930.79 in filter B on MJD 59759.370
 16.61± 0.05-Open a thumnail image of M31-003930.79 in filter R on MJD 59759.370
----
59794.29 17.00± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 59794.290
-------- 16.37± 0.06-Open a thumnail image of M31-003930.79 in filter I on MJD 59794.290
59849.14 16.91± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 59849.140
-------- 16.43± 0.06-Open a thumnail image of M31-003930.79 in filter I on MJD 59849.140
59903.06 17.02± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 59903.060
 17.51± 0.03-Open a thumnail image of M31-003930.79 in filter B on MJD 59903.060
 16.71± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 59903.060
----
59932.07 16.94± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 59932.070
-------- 16.26± 0.06-Open a thumnail image of M31-003930.79 in filter I on MJD 59932.070
60152.35 16.97± 0.05-Open a thumbnail image of M31-003930.79 in filter V on MJD 60152.350
 17.40± 0.06-Open a thumnail image of M31-003930.79 in filter B on MJD 60152.350
--------
60175.20 16.98± 0.04-Open a thumbnail image of M31-003930.79 in filter V on MJD 60175.200
---- 16.66± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 60175.200
 16.44± 0.06-Open a thumnail image of M31-003930.79 in filter I on MJD 60175.200
60201.17 16.92± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 60201.170
 17.37± 0.03-Open a thumnail image of M31-003930.79 in filter B on MJD 60201.170
--------
60262.08 16.92± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 60262.080
-------- 16.35± 0.06-Open a thumnail image of M31-003930.79 in filter I on MJD 60262.080
60498.35 16.99± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 60498.350
-------- 16.33± 0.06-Open a thumnail image of M31-003930.79 in filter I on MJD 60498.350
60506.30 16.97± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 60506.300
---- 16.70± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 60506.300
----
60529.34 16.93± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 60529.340
 17.37± 0.04-Open a thumnail image of M31-003930.79 in filter B on MJD 60529.340
--------
60556.21 16.99± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 60556.210
---- 16.67± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 60556.210
 16.36± 0.07-Open a thumnail image of M31-003930.79 in filter I on MJD 60556.210
60592.06 16.89± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 60592.060
 17.39± 0.04-Open a thumnail image of M31-003930.79 in filter B on MJD 60592.060
 16.64± 0.04-Open a thumnail image of M31-003930.79 in filter R on MJD 60592.060
----
60649.12 16.96± 0.03-Open a thumbnail image of M31-003930.79 in filter V on MJD 60649.120
-------- 16.33± 0.07-Open a thumnail image of M31-003930.79 in filter I on MJD 60649.120
60880.37 16.98± 0.07-Open a thumbnail image of M31-003930.79 in filter V on MJD 60880.370
 17.41± 0.08-Open a thumnail image of M31-003930.79 in filter B on MJD 60880.370
--------
61053.12 17.09± 0.08-Open a thumbnail image of M31-003930.79 in filter V on MJD 61053.120
---- 16.81± 0.09-Open a thumnail image of M31-003930.79 in filter R on MJD 61053.120
----
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

Open a plot of photometry for M31-003930.79Open a plot of color for M31-003930.79

Key for Plot Variability Photometry Table Target Notes

Variability

Plot/Graph Photometry Table Target Notes

It is 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 [0.20 mag]B [0.18 mag]R [0.20 mag]
B [0.18 mag]0.69 (22)
R [0.20 mag]0.82 (21)0.55 (10)
I [0.18 mag]0.07 (18)1.00 (3)0.16 (5)

Magnitude-Magnitude Plots

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

Opens a plot to assess correlation between bands for M31-003930.79

Opens a plot to assess correlation between bands for M31-003930.79

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)		1.19 | 0.94
R
(I|R)		1.08 | 1.352.22 | 0.06
I
(I|R)		0.17 | 1.40--- | --- 0.30 | 1.30

Back to catalog index

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

Generated on 2026-10-12 15:55:15 UT-5