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[vsnet-newvar 1513] New Haseda variable (HadV106)
- Date: Tue, 6 Aug 2002 11:56:49 +0900 (JST)
- To: dubois@simbad.u-strasbg.fr, gerard@simbad.u-strasbg.fr, samus@sai.msu.su, vsnet-newvar@ooruri.kusastro.kyoto-u.ac.jp
- From: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
- Subject: [vsnet-newvar 1513] New Haseda variable (HadV106)
- Cc: vsnet-campaign-unknown@ooruri.kusastro.kyoto-u.ac.jp, vsnet-unknown@ooruri.kusastro.kyoto-u.ac.jp, vsolj-obs@ooruri.kusastro.kyoto-u.ac.jp
- Sender: owner-vsnet-newvar@ooruri.kusastro.kyoto-u.ac.jp
New Haseda variable (HadV106)
Katsumi Haseda (Aichi, Japan) reports the discovery of a new variable
star (HadV106). Although the amplitude and the IRAS flux may suggest a
Mira-type variable, the object may have been systematically bright before
2001. The current fading therefore may be a temporary one rather than a
result of pulsation. Further search for archival photographs is encouraged.
HadV106
= GSC2160.1512 202626.07 +243039.0 (2000.0) 11.37 1
= USNO1125.16227839 202626.094 +243038.59 (2000.0) 11.5 14.5
= 2MASS 202626.088 +243038.88 (2000.0) 0.000 0.000 0.000
= IRAS20242+2420 202416.3 +242042 (1950.0)
F12=1.58 F25=0.63 F60=0.40L F100=6.92L
VAR= 0 LRS=-1
possibly II: variable star with 'young' O-rich circumstellar shell
or VII: variable star with more evolved C-rich circumstellar shell
or VIa: non-variable star with relatively cold dust at large
distance, may be carbon-rich
= 202625.5 +243035 (2000.0) IRAS20242+2420 1.648 0.614 0.400L 7.166L 0%
= 202625.5 +243035 (2000.0) SSC20242+2420 1.648 0.614 0.400L 7.166L
= 202625.9 +243038 (2000.0) 1158 1.93 TYC2-2160.1512.1 (11.78 0.14) (14.06 0.44)
HadV106 M: 11.3-13.2p
Photographic magnitude estimates by VSOLJ members
object YYYYMMDD(UT) mag code
HadV106 19981108.434 113p Had.VSOLJ
HadV106 19990322.809 115p Had.VSOLJ
HadV106 19990517.760 115p Had.VSOLJ
HadV106 19990611.668 114p Had.VSOLJ
HadV106 20000604.719 113p Had.VSOLJ
HadV106 20000810.624 113p Had.VSOLJ
HadV106 20001207.419 116p Had.VSOLJ
HadV106 20010225.824 122p Had.VSOLJ
HadV106 20010615.653 124p Had.VSOLJ
HadV106 20011106.461 120p Had.VSOLJ
HadV106 20020508.676 130p Had.VSOLJ
HadV106 20020527.726 <124p Had.VSOLJ
HadV106 20020710.711 132p Had.VSOLJ
HadV106 20020722.598 <130p Had.VSOLJ
HadV106 20020731.575 <130p Had.VSOLJ
Observer's code:
Had: K. Haseda (Aichi, Japan)
Instruments: 10cm F4.0 twin patrol camera +T-Max400(120)
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