Open a color composite thumbnail image of M33-4M33-4 (J013413.55+303342.0)


Target Notes

Open a color composite thumbnail image of M33-4

Classification: -

Object 4 in Khan et al. 2012. Not bright in visual wavelengths. Five stars of comparable brightness within 2 arc seconds and on the edge of a clump containing stars about one magnitude brighter in all bands. Never really fit well. Only non-detects are really reliable so far. A very red object more than 5 arcsec to the SE.

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 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>16.570-Open a thumbnail image of M33-4 in filter V on MJD 56140.370
----> 13.59-Open a thumnail image of M33-4 in filter R on MJD 56140.370
----
56599.17>16.870-Open a thumbnail image of M33-4 in filter V on MJD 56599.170
 18.65± 0.08TXOpen a thumnail image of M33-4 in filter B on MJD 56599.170
 17.69± 0.06TXOpen a thumnail image of M33-4 in filter R on MJD 56599.170
----
56976.16 18.50± 0.06XOpen a thumbnail image of M33-4 in filter V on MJD 56976.160
 19.11± 0.09XOpen a thumnail image of M33-4 in filter B on MJD 56976.160
 17.67± 0.06-Open a thumnail image of M33-4 in filter R on MJD 56976.160
----
56982.22 18.79± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 56982.220
 18.66± 0.08XOpen a thumnail image of M33-4 in filter B on MJD 56982.220
 18.11± 0.07-Open a thumnail image of M33-4 in filter R on MJD 56982.220
----
57038.13 18.66± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 57038.130
> 16.96XOpen a thumnail image of M33-4 in filter B on MJD 57038.130
 17.84± 0.06-Open a thumnail image of M33-4 in filter R on MJD 57038.130
----
57310.13>16.640-Open a thumbnail image of M33-4 in filter V on MJD 57310.130
 18.94± 0.14TXOpen a thumnail image of M33-4 in filter B on MJD 57310.130
 17.65± 0.06XOpen a thumnail image of M33-4 in filter R on MJD 57310.130
----
57328.19 18.73± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 57328.190
 18.52± 0.08XOpen a thumnail image of M33-4 in filter B on MJD 57328.190
 17.77± 0.07-Open a thumnail image of M33-4 in filter R on MJD 57328.190
----
57335.18 18.69± 0.09XOpen a thumbnail image of M33-4 in filter V on MJD 57335.180
---- 18.27± 0.08-Open a thumnail image of M33-4 in filter R on MJD 57335.180
----
57401.10 18.54± 0.06TXOpen a thumbnail image of M33-4 in filter V on MJD 57401.100
> 17.01-Open a thumnail image of M33-4 in filter B on MJD 57401.100
--------
57406.10>14.170-Open a thumbnail image of M33-4 in filter V on MJD 57406.100
> 12.05-Open a thumnail image of M33-4 in filter B on MJD 57406.100
 17.79± 0.07TOpen a thumnail image of M33-4 in filter R on MJD 57406.100
 18.14± 0.16TXOpen a thumnail image of M33-4 in filter I on MJD 57406.100
57634.37 18.72± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 57634.370
Open a thumbnail image of M33-4 in filter V on MJD 57634.370
 18.38± 0.09XOpen a thumnail image of M33-4 in filter B on MJD 57634.370
Open a thumnail image of M33-4 in filter B on MJD 57634.370
 18.18± 0.08AOpen a thumnail image of M33-4 in filter R on MJD 57634.370
Open a thumnail image of M33-4 in filter R on MJD 57634.370
> 16.43-Open a thumnail image of M33-4 in filter I on MJD 57634.370
57638.43 18.78± 0.08XOpen a thumbnail image of M33-4 in filter V on MJD 57638.430
-------- 18.73± 0.17XOpen a thumnail image of M33-4 in filter I on MJD 57638.430
57687.13>16.760XOpen a thumbnail image of M33-4 in filter V on MJD 57687.130
 18.05± 0.07XOpen a thumnail image of M33-4 in filter B on MJD 57687.130
 18.09± 0.07-Open a thumnail image of M33-4 in filter R on MJD 57687.130
> 15.78-Open a thumnail image of M33-4 in filter I on MJD 57687.130
57964.33 18.37± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 57964.330
 19.01± 0.12-Open a thumnail image of M33-4 in filter B on MJD 57964.330
 17.80± 0.07-Open a thumnail image of M33-4 in filter R on MJD 57964.330
> 15.84-Open a thumnail image of M33-4 in filter I on MJD 57964.330
58045.16 18.65± 0.09XOpen a thumbnail image of M33-4 in filter V on MJD 58045.160
Open a thumbnail image of M33-4 in filter V on MJD 58045.160
 18.44± 0.11XOpen a thumnail image of M33-4 in filter B on MJD 58045.160
Open a thumnail image of M33-4 in filter B on MJD 58045.160
 17.87± 0.07-Open a thumnail image of M33-4 in filter R on MJD 58045.160
Open a thumnail image of M33-4 in filter R on MJD 58045.160
----
58073.20 18.51± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 58073.200
 18.88± 0.18-Open a thumnail image of M33-4 in filter B on MJD 58073.200
--------
58103.18>16.120-Open a thumbnail image of M33-4 in filter V on MJD 58103.180
------------
58108.11 18.58± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 58108.110
 18.67± 0.10-Open a thumnail image of M33-4 in filter B on MJD 58108.110
----> 14.47-Open a thumnail image of M33-4 in filter I on MJD 58108.110
58312.39 18.78± 0.08TXOpen a thumbnail image of M33-4 in filter V on MJD 58312.390
> 15.74-Open a thumnail image of M33-4 in filter B on MJD 58312.390
--------
58317.37 18.85± 0.09XOpen a thumbnail image of M33-4 in filter V on MJD 58317.370
 18.54± 0.08-Open a thumnail image of M33-4 in filter B on MJD 58317.370
 18.09± 0.07XOpen a thumnail image of M33-4 in filter R on MJD 58317.370
----
58341.34 18.67± 0.09XOpen a thumbnail image of M33-4 in filter V on MJD 58341.340
-------- 18.52± 0.12XOpen a thumnail image of M33-4 in filter I on MJD 58341.340
58342.40>15.840-Open a thumbnail image of M33-4 in filter V on MJD 58342.400
 18.31± 0.11TXOpen a thumnail image of M33-4 in filter B on MJD 58342.400
 18.03± 0.09TOpen a thumnail image of M33-4 in filter R on MJD 58342.400
----
58375.14>16.470XOpen a thumbnail image of M33-4 in filter V on MJD 58375.140
---- 17.59± 0.05-Open a thumnail image of M33-4 in filter R on MJD 58375.140
----
58420.10 18.37± 0.08TXOpen a thumbnail image of M33-4 in filter V on MJD 58420.100
> 16.89-Open a thumnail image of M33-4 in filter B on MJD 58420.100
----> 15.53-Open a thumnail image of M33-4 in filter I on MJD 58420.100
58433.00>16.160-Open a thumbnail image of M33-4 in filter V on MJD 58433.000
---- 17.58± 0.06TOpen a thumnail image of M33-4 in filter R on MJD 58433.000
> 15.32-Open a thumnail image of M33-4 in filter I on MJD 58433.000
58672.39>15.760-Open a thumbnail image of M33-4 in filter V on MJD 58672.390
---- 17.88± 0.08TOpen a thumnail image of M33-4 in filter R on MJD 58672.390
> 14.68-Open a thumnail image of M33-4 in filter I on MJD 58672.390
58695.36 18.88± 0.09XOpen a thumbnail image of M33-4 in filter V on MJD 58695.360
 18.77± 0.07-Open a thumnail image of M33-4 in filter B on MJD 58695.360
 18.19± 0.06XOpen a thumnail image of M33-4 in filter R on MJD 58695.360
----
58784.12 18.75± 0.08XOpen a thumbnail image of M33-4 in filter V on MJD 58784.120
 18.51± 0.07XOpen a thumnail image of M33-4 in filter B on MJD 58784.120
--------
58812.22 18.45± 0.07TXOpen a thumbnail image of M33-4 in filter V on MJD 58812.220
--------> 16.47-Open a thumnail image of M33-4 in filter I on MJD 58812.220
58902.07 18.49± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 58902.070
---- 17.81± 0.06-Open a thumnail image of M33-4 in filter R on MJD 58902.070
----
59059.38 19.32± 0.09-Open a thumbnail image of M33-4 in filter V on MJD 59059.380
 18.77± 0.08XOpen a thumnail image of M33-4 in filter B on MJD 59059.380
--------
59081.26 18.73± 0.11XOpen a thumbnail image of M33-4 in filter V on MJD 59081.260
---- 18.13± 0.06-Open a thumnail image of M33-4 in filter R on MJD 59081.260
----
59084.34-------- 18.21± 0.05TXOpen a thumnail image of M33-4 in filter R on MJD 59084.340
----
59161.07 18.86± 0.10XOpen a thumbnail image of M33-4 in filter V on MJD 59161.070
 18.58± 0.11XOpen a thumnail image of M33-4 in filter B on MJD 59161.070
 17.87± 0.06-Open a thumnail image of M33-4 in filter R on MJD 59161.070
----
59171.09 18.29± 0.06TXOpen a thumbnail image of M33-4 in filter V on MJD 59171.090
--------> 15.91-Open a thumnail image of M33-4 in filter I on MJD 59171.090
59227.08 18.79± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 59227.080
 19.97± 0.16XOpen a thumnail image of M33-4 in filter B on MJD 59227.080
 18.28± 0.07-Open a thumnail image of M33-4 in filter R on MJD 59227.080
----
59415.36 18.66± 0.10XOpen a thumbnail image of M33-4 in filter V on MJD 59415.360
---- 18.35± 0.07-Open a thumnail image of M33-4 in filter R on MJD 59415.360
----
59441.39 18.68± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 59441.390
 18.73± 0.08XOpen a thumnail image of M33-4 in filter B on MJD 59441.390
--------
59463.30 18.59± 0.06TXOpen a thumbnail image of M33-4 in filter V on MJD 59463.300
Open a thumbnail image of M33-4 in filter V on MJD 59463.300
--------> 16.28-Open a thumnail image of M33-4 in filter I on MJD 59463.300
59523.15 18.59± 0.06XOpen a thumbnail image of M33-4 in filter V on MJD 59523.150
---- 18.19± 0.06-Open a thumnail image of M33-4 in filter R on MJD 59523.150
----
59525.15 18.60± 0.08XOpen a thumbnail image of M33-4 in filter V on MJD 59525.150
> 17.33-Open a thumnail image of M33-4 in filter B on MJD 59525.150
--------
59546.15 18.67± 0.06TXOpen a thumbnail image of M33-4 in filter V on MJD 59546.150
--------> 16.31-Open a thumnail image of M33-4 in filter I on MJD 59546.150
59551.11>16.790-Open a thumbnail image of M33-4 in filter V on MJD 59551.110
> 16.99-Open a thumnail image of M33-4 in filter B on MJD 59551.110
--------
59583.15 18.63± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 59583.150
---- 18.19± 0.06-Open a thumnail image of M33-4 in filter R on MJD 59583.150
----
59608.07 18.69± 0.19TXOpen a thumbnail image of M33-4 in filter V on MJD 59608.070
--------> 15.58-Open a thumnail image of M33-4 in filter I on MJD 59608.070
59794.35 18.73± 0.07TXOpen a thumbnail image of M33-4 in filter V on MJD 59794.350
------------
59823.24 18.71± 0.10XOpen a thumbnail image of M33-4 in filter V on MJD 59823.240
 18.54± 0.08XOpen a thumnail image of M33-4 in filter B on MJD 59823.240
--------
59851.13 18.37± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 59851.130
---- 18.02± 0.10-Open a thumnail image of M33-4 in filter R on MJD 59851.130
----
59854.22 18.50± 0.07TOpen a thumbnail image of M33-4 in filter V on MJD 59854.220
> 17.04-Open a thumnail image of M33-4 in filter B on MJD 59854.220
--------
59879.12>16.800-Open a thumbnail image of M33-4 in filter V on MJD 59879.120
--------> 15.94-Open a thumnail image of M33-4 in filter I on MJD 59879.120
Open a thumnail image of M33-4 in filter I on MJD 59879.120
59904.12 18.53± 0.06XOpen a thumbnail image of M33-4 in filter V on MJD 59904.120
 18.58± 0.09-Open a thumnail image of M33-4 in filter B on MJD 59904.120
 17.95± 0.06XOpen a thumnail image of M33-4 in filter R on MJD 59904.120
> 16.35-Open a thumnail image of M33-4 in filter I on MJD 59904.120
59932.13 18.68± 0.08XOpen a thumbnail image of M33-4 in filter V on MJD 59932.130
---- 18.40± 0.08-Open a thumnail image of M33-4 in filter R on MJD 59932.130
----
60172.37 18.80± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 60172.370
 18.59± 0.07XOpen a thumnail image of M33-4 in filter B on MJD 60172.370
--------
60205.15 18.90± 0.12XOpen a thumbnail image of M33-4 in filter V on MJD 60205.150
---- 17.80± 0.06-Open a thumnail image of M33-4 in filter R on MJD 60205.150
----
60227.12>16.400-Open a thumbnail image of M33-4 in filter V on MJD 60227.120
--------> 15.46-Open a thumnail image of M33-4 in filter I on MJD 60227.120
60262.13 18.80± 0.14XOpen a thumbnail image of M33-4 in filter V on MJD 60262.130
 18.38± 0.06XOpen a thumnail image of M33-4 in filter B on MJD 60262.130
 17.91± 0.07XOpen a thumnail image of M33-4 in filter R on MJD 60262.130
----
60290.15 18.67± 0.08XOpen a thumbnail image of M33-4 in filter V on MJD 60290.150
 18.80± 0.14XOpen a thumnail image of M33-4 in filter B on MJD 60290.150
----> 16.08-Open a thumnail image of M33-4 in filter I on MJD 60290.150
60292.18 18.53± 0.06XOpen a thumbnail image of M33-4 in filter V on MJD 60292.180
---- 18.26± 0.07-Open a thumnail image of M33-4 in filter R on MJD 60292.180
----
60342.08 18.66± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 60342.080
---- 18.09± 0.07-Open a thumnail image of M33-4 in filter R on MJD 60342.080
----
60504.38 18.88± 0.08XOpen a thumbnail image of M33-4 in filter V on MJD 60504.380
 18.70± 0.09XOpen a thumnail image of M33-4 in filter B on MJD 60504.380
 18.36± 0.08-Open a thumnail image of M33-4 in filter R on MJD 60504.380
----
60529.36 18.70± 0.08XOpen a thumbnail image of M33-4 in filter V on MJD 60529.360
-------- 18.64± 0.10XOpen a thumnail image of M33-4 in filter I on MJD 60529.360
60556.24 18.71± 0.08XOpen a thumbnail image of M33-4 in filter V on MJD 60556.240
 18.57± 0.07XOpen a thumnail image of M33-4 in filter B on MJD 60556.240
 18.16± 0.07-Open a thumnail image of M33-4 in filter R on MJD 60556.240
----
60594.10>16.410-Open a thumbnail image of M33-4 in filter V on MJD 60594.100
--------> 15.38-Open a thumnail image of M33-4 in filter I on MJD 60594.100
60612.14 18.69± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 60612.140
---- 17.89± 0.07-Open a thumnail image of M33-4 in filter R on MJD 60612.140
----
60651.14 18.77± 0.07XOpen a thumbnail image of M33-4 in filter V on MJD 60651.140
 18.55± 0.07XOpen a thumnail image of M33-4 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

Open a plot of photometry for M33-4Open a plot of color for M33-4

Key for Plot Variability Photometry Table Target Notes

Variability

Plot/Graph Photometry Table Target Notes

There are not yet enough observations (fewer than three epochs) of this star to reliably determine if it could be variable or not

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 [0.00 mag]B [0.00 mag]R [0.82 mag]
B [0.00 mag]-.-- (0)
R [0.82 mag]-.-- (0)-.-- (1)
I [0.00 mag]-.-- (0)-.-- (0) -.-- (0)

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 M33-4

Opens a plot to assess correlation between bands for M33-4

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)		--- | ---
R
(I|R)		--- | ------ | ---
I
(I|R)		--- | ------ | --- --- | ----

Back to catalog index

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

Generated on 2026-01-19 14:34:50 UT-5