[vsnet-newvar 395] New Haseda variable (HadV54)

[Taichi Kato <tkato>]

New Haseda variable (HadV54)

   Katsumi Haseda (Aichi, Japan) reports the discovery of a new variable
star (HadV54).  The bright apperance in USNO suggests that the variable
is of Mira-type.

HadV54
= USNO0750.11100563 172559.463 -140312.66 (2000.0) 12.3 15.8
= IRAS17231-1400 172309.4 -140040 (1950.0)
    F12=0.91  F25=0.48  F60=0.40L F100=1.58L
    VAR=81 LRS=-1
 possibly IIIa: variable star with more evolved O-rich c.s. shell
 or VIb: variable star with relatively hot dust close to
      the star and relatively cold dust at large distance
      may be O-rich
 or VII: variable star with more evolved C-rich circumstellar shell
= 172559.5 -140312 (2000.0) FSC17231-1400 0.846 0.371 0.337L 2.319L
= 172559.5 -140314 (2000.0) IRAS17231-1400 0.913 0.499 0.400L 1.597L 81%
= 172559.5 -140314 (2000.0) SSC17231-1400 0.913 0.499 0.400L 1.597L

  HadV54  M:  13.0-(14.3p

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
HadV54         19970416.788  <143p  Had.VSOLJ
HadV54         19970606.656  <143p  Had.VSOLJ
HadV54         19980328.797  <143p  Had.VSOLJ
HadV54         19980429.699  <143p  Had.VSOLJ
HadV54         19980522.658  <143p  Had.VSOLJ
HadV54         19990213.837  <143p  Had.VSOLJ
HadV54         19990316.823  <143p  Had.VSOLJ
HadV54         19990830.474  <143p  Had.VSOLJ
HadV54         20000206.826  <143p  Had.VSOLJ
HadV54         20000428.728  130p  Had.VSOLJ

Observer's code:
  Had: K. Haseda (Aichi, Japan)
       Instruments: 10cm F4.0 twin patrol camera +T-Max400(120)

Relayed from Katsumi Haseda <haseda@mxs.mesh.ne.jp>

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