[vsnet-newvar 369] New Haseda variable (HadV49)

[Taichi Kato <tkato>]

New Haseda variable (HadV49)

   Katsumi Haseda (Aichi, Japan) reports the discovery of a new variable
star (HadV49).

HadV49 = 181147.2 -292025 (2000.0), Haseda's original report
No cataloged object.

   H. Yamaoka (Kyushu University) reports the possible counterpart on
DSS1(Bj) and 2(R), whose approximate coordinates are 181147.01 -292024.0
(2000.0).  This star is not present in USNO catalogs.  Yamaoka reports
that the star is brighter on DSS2(R) than on DSS1(Bj, faint).  Although the
object is missing in IRAS surveys (unless the object falls outside the
almost complete survey area of the IRAS, 11.9-mag Mira-star is rarely
missing), the star looks like a Mira-type variable with a large amplitude.
However, possibilities still exist than HadV49 may be an other type of
variable star with a large amplitude.  Follow-up observations (even
direct unfiltered CCD imaging would be useful; multicolor photometry is
more welcome) are encouraged during the present bright state.

  HadV49  M:  11.9-(13.1p

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
HadV49         19960318.776  <128p  Had.VSOLJ
HadV49         19960522.707  131p  Had.VSOLJ
HadV49         19960525.641  131p  Had.VSOLJ
HadV49         19960815.593  <130p  Had.VSOLJ
HadV49         19961029.393  <131p  Had.VSOLJ
HadV49         19970317.817  <131p  Had.VSOLJ
HadV49         19970517.729  <130p  Had.VSOLJ
HadV49         19970606.681  <131p  Had.VSOLJ
HadV49         19970629.635  <131p  Had.VSOLJ
HadV49         19971019.413  <122p  Had.VSOLJ
HadV49         19980228.829  121p  Had.VSOLJ
HadV49         19980307.812  119p  Had.VSOLJ
HadV49         19980328.818  <126p  Had.VSOLJ
HadV49         19980402.778  <131p  Had.VSOLJ
HadV49         19980425.725  <130p  Had.VSOLJ
HadV49         19980429.734  <131p  Had.VSOLJ
HadV49         19980503.742  <131p  Had.VSOLJ
HadV49         19980522.705  <130p  Had.VSOLJ
HadV49         19980615.550  <131p  Had.VSOLJ
HadV49         19980629.635  <131p  Had.VSOLJ
HadV49         19990831.475  130p  Had.VSOLJ
HadV49         20000313.827  126p  Had.VSOLJ
HadV49         20000401.801  119p  Had.VSOLJ
HadV49         20000412.787  119p  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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