[vsnet-newvar 366] New Haseda variable (HadV48)

[Taichi Kato <tkato>]

New Haseda variable (HadV48)

   Katsumi Haseda (Aichi, Japan) reports the discovery of a new variable
star (HadV48).

Some information:

[from vsnet-alert 4585] : (some parts relevant to the earlier wrong
                           identification)
The present light variation may be more signatures of a previously
unrecognized R CrB-type variable star currently entering a decline.
Further observations, including spectroscopy, are urgently requested to
clarify the nature of the object.

[From vsnet-alert 4610]
The new variable by Haseda, which showed a sudden fading as in the initial
report, is identified with

   GSC6870.614 183330.78 -285851.2 (2000.0) 11.56 6
   = TYC2-6870.614.1 (V=11.38, B-V=1.08)

, which has a moderate Tycho color and no IRAS identification.  This star
apparentlt needs to be urgently observed to confirm the nature of the fading.

HadV48
= GSC6870.614 183330.78 -285851.2 (2000.0) 11.56 6
= USNO0600.18505289 183330.806 -285851.19 (2000.0) 11.6 12.3
= 183330.2 -285825 (2000.0) CD-29.15079 10.0
= 183330.6 -285850 (2000.0) 1138 1.08 TYC2-6870.614.1 (11.49 0.14) (12.76 0.30)

  HadV48  E:/RCB: 10.9-(13.0p

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
HadV48         19960318.776  112p  Had.VSOLJ
HadV48         19960522.707  112p  Had.VSOLJ
HadV48         19960525.634  112p  Had.VSOLJ
HadV48         19960815.593  112p  Had.VSOLJ
HadV48         19961029.393  112p  Had.VSOLJ
HadV48         19970317.817  111p  Had.VSOLJ
HadV48         19970517.729  112p  Had.VSOLJ
HadV48         19970606.681  112p  Had.VSOLJ
HadV48         19970629.635  118p  Had.VSOLJ
HadV48         19971019.413  109p  Had.VSOLJ
HadV48         19980228.829  116p  Had.VSOLJ
HadV48         19980307.812  112p  Had.VSOLJ
HadV48         19980328.818  111p  Had.VSOLJ
HadV48         19980402.778  109p  Had.VSOLJ
HadV48         19980425.728  112p  Had.VSOLJ
HadV48         19980429.734  111p  Had.VSOLJ
HadV48         19980503.742  112p  Had.VSOLJ
HadV48         19980522.705  116p  Had.VSOLJ
HadV48         19980615.550  117p  Had.VSOLJ
HadV48         19980629.635  111p  Had.VSOLJ
HadV48         19980814.533  111p  Had.VSOLJ
HadV48         19981009.438  112p  Had.VSOLJ
HadV48         19990313.803  112p  Had.VSOLJ
HadV48         19990831.479  109p  Had.VSOLJ
HadV48         20000212.851  112p  Had.VSOLJ
HadV48         20000313.827  113p  Had.VSOLJ
HadV48         20000401.806  <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>

VSNET Home Page

Return to Daisaku Nogami

---

vsnet-adm@kusastro.kyoto-u.ac.jp