[vsnet-newvar 2606] New Hatayama variables (HykV1-HykV11)

Hiroyuki Maehara mira at cetus-net.org
Mon Dec 3 17:40:34 JST 2007


K. Hatayama reports the discovery of new variable stars HykV1-HykV11.

------------------------------------------------------------------------
HykV1
= USNO-B1.0 0587-0626235  18 04 34.80  -31 12 17.2 (2000.0)
= IRAS 18013-3112         18 01 20.4   -31 12 29   (1950.0)
= ASAS 180435-3112.3      18 04 35.0   -31 12 18   (2000.0)
= 2MASS J18043478-3112165 18 04 34.79  -31 12 16.6 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV1          20070731.517   123C     Hyk.VSOLJ
HykV1          20070811.494   119C     Hyk.VSOLJ
HykV1          20070913.436   121C     Hyk.VSOLJ
HykV1          20071018.401   102C     Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------
HykV2
= USNO-A2.0 0525-32166963   18 06 04.383 -31 12 44.08 (2000.0)
= USNO-B1.0 0587-0631965    18 06 04.41 -31 12 43.8 (2000.0)
= 2MASS J18060445-3112441   18 06 04.46 -31 12 44.1 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV2          20070731.517   135:C    Hyk.VSOLJ
HykV2          20070811.494   133C     Hyk.VSOLJ
HykV2          20070913.436   121C     Hyk.VSOLJ
HykV2          20071018.401   123C     Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------
HykV3
= GSC 7395.468            18 05 24.25 -32 21 51.5 (2000.0)
= USNO=B1.0 0576-0851638  18 05 24.26 -32 21 51.9 (2000.0)
= 2MASS J18052424-3221514 18 05 24.24 -32 21 51.5 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV3          20070731.517   135C     Hyk.VSOLJ
HykV3          20070815.484   134C     Hyk.VSOLJ
HykV3          20070821.500   130C     Hyk.VSOLJ
HykV3          20070823.452   130C     Hyk.VSOLJ
HykV3          20070911.435   119C     Hyk.VSOLJ
HykV3          20070913.436   118C     Hyk.VSOLJ
HykV3          20070926.442   115C     Hyk.VSOLJ
HykV3          20071018.401   115C     Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------
HykV4
= 2MASS J18053790-3322291 18 05 37.91 -33 22 29.2 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV4          20070731.517   <140C    Hyk.VSOLJ
HykV4          20070921.457   138C     Hyk.VSOLJ
HykV4          20070926.441   134C     Hyk.VSOLJ
HykV4          20071002.454   123C     Hyk.VSOLJ
HykV4          20071018.403   130:C    Hyk.VSOLJ
HykV4          20071024.403   135C     Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------
HykV5
= USNO-B1.0 0557-0652916  18 06 27.45 -34 13 10.4 (2000.0)
= 2MASS J18062738-3413104 18 06 27.67 -34 13 10.1 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV5          20070731.517   140C     Hyk.VSOLJ
HykV5          20070809.512   134C     Hyk.VSOLJ
HykV5          20070812.490   137C     Hyk.VSOLJ
HykV5          20070821.496   134C     Hyk.VSOLJ
HykV5          20070823.456   135C     Hyk.VSOLJ
HykV5          20070913.434   131C     Hyk.VSOLJ
HykV5          20070926.440   125C     Hyk.VSOLJ
HykV5          20071002.453   121C     Hyk.VSOLJ
HykV5          20071018.399   119C     Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------
HykV6
= USNO-A2.0 0525-32480592 18 08 05.991 -30 00 46.54 (2000.0)
= USNO-B1.0 0599-0676150  18 08 05.98 -30 00 45.8 (2000.0)
= USNO-B1.0 0599-0676156  18 08 06.06 -30 00 45.8 (2000.0)
= 2MASS J18080598-3000455 18 08 05.98 -30 00 45.5 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV6          20070731.520   133C     Hyk.VSOLJ
HykV6          20070811.594   136C     Hyk.VSOLJ
HykV6          20070812.495   134C     Hyk.VSOLJ
HykV6          20070823.454   135C     Hyk.VSOLJ
HykV6          20070919.435   121C     Hyk.VSOLJ
HykV6          20070926.443   122C     Hyk.VSOLJ
HykV6          20071002.457   129:C    Hyk.VSOLJ
HykV6          20071011.440   121C     Hyk.VSOLJ
HykV6          20071014.398   123C     Hyk.VSOLJ
HykV6          20071018.403   120C     Hyk.VSOLJ
HykV6          20071023.406   123C     Hyk.VSOLJ
HykV6          20071102.391   121C     Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------
HykV7
= USNO-A2.0 0525-32574704 18 08 41.348 -30 54 42.59 (2000.0)
= USNO-B1.0 0590-0638940  18 08 41.39 -30 54 42.4 (2000.0)
= 2MASS J18084142-3054426 18 08 41.43 -30 54 42.7 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV7          20070821.502   <145C    Hyk.VSOLJ
HykV7          20070823.454   <140C    Hyk.VSOLJ
HykV7          20070919.435   142C     Hyk.VSOLJ
HykV7          20070926.443   139C     Hyk.VSOLJ
HykV7          20071002.457   143:C    Hyk.VSOLJ
HykV7          20071011.440   130C     Hyk.VSOLJ
HykV7          20071014.398   129C     Hyk.VSOLJ
HykV7          20071018.403   126C     Hyk.VSOLJ
HykV7          20071023.406   124C     Hyk.VSOLJ
HykV7          20071102.391   124C     Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------
HykV8
= USNO-B1.0 0591-0653217  18 10 51.05 -30 53 17.9 (2000.0)
= 2MASS J18105110-3053195 18 10 51.11 -30 53 19.6 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV8          20070821.502   <145C    Hyk.VSOLJ
HykV8          20070919.435   <145C    Hyk.VSOLJ
HykV8          20070921.459   <140C    Hyk.VSOLJ
HykV8          20070926.443   132C     Hyk.VSOLJ
HykV8          20071002.457   127:C    Hyk.VSOLJ
HykV8          20071011.440   124C     Hyk.VSOLJ
HykV8          20071014.398   126C     Hyk.VSOLJ
HykV8          20071018.403   122C     Hyk.VSOLJ
HykV8          20071023.406   122C     Hyk.VSOLJ
HykV8          20071102.391   125C     Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------
HykV9
= 2MASS J18111125-3048251 18 11 11.25 -30 48 25.1 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV9          20070919.435   <145C    Hyk.VSOLJ
HykV9          20070921.459   135C     Hyk.VSOLJ
HykV9          20070926.443   130C     Hyk.VSOLJ
HykV9          20071002.457   129:C    Hyk.VSOLJ
HykV9          20071011.440   124C     Hyk.VSOLJ
HykV9          20071014.398   127C     Hyk.VSOLJ
HykV9          20071018.403   122C     Hyk.VSOLJ
HykV9          20071023.406   122C     Hyk.VSOLJ
HykV9          20071102.391   126C     Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------
HykV10
= USNO-B1.0 0594-0657030  18 10 14.97 -30 34 38.1 (2000.0)
= 2MASS J18101502-3034377 18 10 15.02 -30 34 37.8 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV10         20070919.435   <145C    Hyk.VSOLJ
HykV10         20070921.459   <140C    Hyk.VSOLJ
HykV10         20070926.443   <140C    Hyk.VSOLJ
HykV10         20071002.457   134:C    Hyk.VSOLJ
HykV10         20071011.440   121C     Hyk.VSOLJ
HykV10         20071014.398   124C     Hyk.VSOLJ
HykV10         20071018.403   120C     Hyk.VSOLJ
HykV10         20071023.406   118C     Hyk.VSOLJ
HykV10         20071102.391   118C     Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------
HykV11
= 2MASS J18080433-3101203 18 08 04.34 -31 01 20.4 (2000.0)

CCD magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag      code
HykV11         20070731.520   124C     Hyk.VSOLJ
HykV11         20070811.594   126C     Hyk.VSOLJ
HykV11         20070812.495   128C     Hyk.VSOLJ
HykV11         20070821.502   136C     Hyk.VSOLJ
HykV11         20070823.454   132C     Hyk.VSOLJ
HykV11         20070919.435   129C     Hyk.VSOLJ
HykV11         20070921.459   131C     Hyk.VSOLJ
HykV11         20070926.443   140C     Hyk.VSOLJ
HykV11         20071011.440   140C     Hyk.VSOLJ
HykV11         20071018.403   142C     Hyk.VSOLJ
HykV11         20071023.406   <140C    Hyk.VSOLJ

Observer: K. Hatayama (Niigata, Japan)
Instruments: 25cmSCT + ST-9XE (unfiltered)
------------------------------------------------------------------------


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