New variable stars discovered in
digitised archival photographic plates
from the Moscow Plate Archive
Note: This webpage is made with a python script which can be found here. The script pulls plots from various folders for each star, other information from an excel sheet and creates this webpage with the general style of my website and the tables as per choice. This can be extended to any number of data-units (stars here), and no manual HTML scripting would be needed!

1

J2000 Coordinates: 22 34 48.43 +57 07 10.2Magnitude range: 15.8-16.6J-K colour index: 0.4
Local Object ID: 4186Local sub-field: -1_-4Distance (arcsec) from SNAD match: 0.02
Period from MPA: 0.55Period from ZTF-zg: 0.55Period from ZTF-zi: -Period from ZTF-zr: 0.55
Comment: All is well.
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

2

J2000 Coordinates: 22 42 37.33 +50 37 37.7Magnitude range: 16-17.2J-K colour index: 0.47
Local Object ID: 349Local sub-field: 00_03Distance (arcsec) from SNAD match: 0.02
Period from MPA: 0.46Period from ZTF-zg: 0.46Period from ZTF-zi: MultiplePeriod from ZTF-zr: 0.46
Comment: All is well.
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zi Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zi Periodogram
ZTF-zi #1 period
ZTF-zi #2 period
ZTF-zi #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

3

J2000 Coordinates: 22 42 16.89 +50 04 04.6Magnitude range: 16.1-17.5J-K colour index: 1.06
Local Object ID: 1681Local sub-field: 00_04Distance (arcsec) from SNAD match: 0.04
Period from MPA: 0.99(!)Period from ZTF-zg: 0.49,0.99Period from ZTF-zi: -Period from ZTF-zr: 0.49
Comment: Not sure what is happening, there seems to be some periodicity, need input.
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

4

J2000 Coordinates: 22 45 24.41 +56 16 51.5Magnitude range: 16.1-16.8J-K colour index: 0.75
Local Object ID: 4088Local sub-field: 00_-3Distance (arcsec) from SNAD match: 0.269
Period from MPA: Long periodPeriod from ZTF-zg: -Period from ZTF-zi: -Period from ZTF-zr: -
Comment: The ZTF match is too far, so ignore the data from ZTF. Looks like an L in our data.
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zi Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zi Periodogram
ZTF-zi #1 period
ZTF-zi #2 period
ZTF-zi #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

5

J2000 Coordinates: 22 41 47.89 +50 17 10.8Magnitude range: 15.2-15.8J-K colour index: 0.3
Local Object ID: 3944Local sub-field: 00_04Distance (arcsec) from SNAD match: 0.06
Period from MPA: 1Period from ZTF-zg: 1Period from ZTF-zi: -Period from ZTF-zr: 1
Comment: All is well.
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

6

J2000 Coordinates: 22 51 05.66 +57 33 21.1Magnitude range: 14-14.4J-K colour index: 0.389
Local Object ID: 2639Local sub-field: 01_-5Distance (arcsec) from SNAD match: 0.01
Period from MPA: -Period from ZTF-zg: -Period from ZTF-zi: -Period from ZTF-zr: -
Comment: Long period, shows variation in plates but seems different in ZTF data.
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zi Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zi Periodogram
ZTF-zi #1 period
ZTF-zi #2 period
ZTF-zi #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

7

J2000 Coordinates: 22 48 55.09 +57 15 19.8Magnitude range: 15.8-16.4J-K colour index: 0.378
Local Object ID: 1070Local sub-field: 01_-5Distance (arcsec) from SNAD match: 0.06
Period from MPA: 2.59Period from ZTF-zg: 0.1,0.3,2.59Period from ZTF-zi: InconclusivePeriod from ZTF-zr: Multiple
Comment: A little weak case, but periodicity is seen in all data.
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zi Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zi Periodogram
ZTF-zi #1 period
ZTF-zi #2 period
ZTF-zi #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

8

J2000 Coordinates: 22 56 35.78 +55 26 53.9Magnitude range: 16-17J-K colour index: 0.3
Local Object ID: 494Local sub-field: 02_-3Distance (arcsec) from SNAD match: 0.08
Period from MPA: 1.33Period from ZTF-zg: 1.33Period from ZTF-zi: -Period from ZTF-zr: 1.33
Comment: All is well.
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

9

J2000 Coordinates: 22 52 36.28 +56 54 54.1Magnitude range: 15.6-16.2J-K colour index: 0.3
Local Object ID: 4139Local sub-field: 02_-4Distance (arcsec) from SNAD match: 0.06
Period from MPA: 1.12Period from ZTF-zg: -Period from ZTF-zi: -Period from ZTF-zr: 1.12
Comment: Period confirmed by ZTF-zr
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

10

J2000 Coordinates: 22 38 28.08 +57 19 18.3Magnitude range: 15.3-15.8J-K colour index: 0.58
Local Object ID: 20182Local sub-field: 01_-5Distance (arcsec) from SNAD match: 0.02
Period from MPA: 0.99(!)Period from ZTF-zg: -Period from ZTF-zi: -Period from ZTF-zr: -
Comment: Good L
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zi Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zi Periodogram
ZTF-zi #1 period
ZTF-zi #2 period
ZTF-zi #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

11

J2000 Coordinates: *22 42 20.77 +57 38 26.6Magnitude range: 17.5-16J-K colour index: -
Local Object ID: 20213Local sub-field: 00_-5Distance (arcsec) from SNAD match: 0.528
Period from MPA: -Period from ZTF-zg: -Period from ZTF-zi: -Period from ZTF-zr: -
Comment: Ignore the lightcurve and periodogram here, they are of another star(s) entirely (hence the *). Near this star, in our data we see a flare/nova in some images. Prof. Samus' comment: "very interesting, in the flare image the star is actually different"
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zi Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zi Periodogram
ZTF-zi #1 period
ZTF-zi #2 period
ZTF-zi #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

12

J2000 Coordinates: 23 36 17.66 +56 48 04.7Magnitude range: 16.3-17.6J-K colour index: 0.39
Local Object ID: 2881Local sub-field: -1_-4Distance (arcsec) from SNAD match: -
Period from MPA: 0.59Period from ZTF-zg: -Period from ZTF-zi: -Period from ZTF-zr: -
Comment: Looks like EW, star not found in ZTF.
MPA Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period

13

J2000 Coordinates: 22 52 53.13 +48 57 16.8Magnitude range: 14.8-15.6J-K colour index: 0.367
Local Object ID: 219Local sub-field: 02_05Distance (arcsec) from SNAD match: 0.09
Period from MPA: 0.125Period from ZTF-zg: -Period from ZTF-zi: -Period from ZTF-zr: -
Comment: Weak case, should be rejected?
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

14

J2000 Coordinates: 22 52 14.33 +49 34 14.9Magnitude range: 12.8-13J-K colour index: 0.7
Local Object ID: 2081Local sub-field: 02_05Distance (arcsec) from SNAD match: -
Period from MPA: 0.99Period from ZTF-zg: -Period from ZTF-zi: -Period from ZTF-zr: -
Comment: Not found in ZTF, weak case, but possibly variable.
MPA Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period

15

J2000 Coordinates: 22 57 45.30 +56 24 24.6Magnitude range: 15.2-15.7J-K colour index: nan
Local Object ID: 1714Local sub-field: 02_-4Distance (arcsec) from SNAD match: 0.02
Period from MPA: -Period from ZTF-zg: -Period from ZTF-zi: InconclusivePeriod from ZTF-zr: -
Comment: Good L
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zi Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zi Periodogram
ZTF-zi #1 period
ZTF-zi #2 period
ZTF-zi #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period

16

J2000 Coordinates: 22 53 01.41 +48 55 32.6Magnitude range: 13-14.5J-K colour index: 0.65
Local Object ID: 104Local sub-field: 02_05Distance (arcsec) from SNAD match: 0.08
Period from MPA: 1.99Period from ZTF-zg: -Period from ZTF-zi: -Period from ZTF-zr: -
Comment: Weak case, should be rejected?
MPA Lightcurve
ZTF-zg Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period

17

J2000 Coordinates: 22 43 32.35 +48 58 20.4Magnitude range: 14.8-15.1J-K colour index: 0.14
Local Object ID: 136Local sub-field: 00_05Distance (arcsec) from SNAD match: 0.01
Period from MPA: 4000Period from ZTF-zg: -Period from ZTF-zi: InconclusivePeriod from ZTF-zr: -
Comment: Seemed like an L in our data, seems normal in ZTF.
MPA Lightcurve
ZTF-zg Lightcurve
ZTF-zi Lightcurve
ZTF-zr Lightcurve
MPA Periodogram
MPA #1 period
MPA #2 period
MPA #3 period
ZTF-zg Periodogram
ZTF-zg #1 period
ZTF-zg #2 period
ZTF-zg #3 period
ZTF-zi Periodogram
ZTF-zi #1 period
ZTF-zi #2 period
ZTF-zi #3 period
ZTF-zr Periodogram
ZTF-zr #1 period
ZTF-zr #2 period
ZTF-zr #3 period