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[vsnet-obs 19727] New Haseda variable (HadV15)

New Haseda variable (HadV15)

   Katsumi Haseda (Aichi, Japan) reports the discovery of a new variable
star (HadV15).

HadV15
= USNO0450.22063096 154713.583 -390414.95 (2000.0) 15.9 14.3
= IRAS15439-3854 154355.1 -385458 (1950.0)
    F12=1.20  F25=0.63  F60=0.40L F100=10.96L
    VAR=11 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
= 154711.1 -390405 (2000.0) FSC15438-3854 1.174 0.589 0.522L 3.944L
= 154713.8 -390412 (2000.0) IRAS15439-3854 1.238 0.618 0.400L 10.860L 11%
= 154713.8 -390412 (2000.0) SSC15439-3854 1.238 0.618 0.400L 10.860L

  HadV15    M: range 12.2-<13.2p
  (Possible classfication based on the IRAS identification.  The USNO
   color may be in error).

Photographic magnitude estimates by VSOLJ members

object         YYMMDD(UT)   mag  code
HadV15         960318.747  <132p  Had.VSOLJ
HadV15         970309.785  <132p  Had.VSOLJ
HadV15         980129.853  <132p  Had.VSOLJ
HadV15         980205.838  <132p  Had.VSOLJ
HadV15         980226.825  <132p  Had.VSOLJ
HadV15         980305.813  <132p  Had.VSOLJ
HadV15         980615.535  125p  Had.VSOLJ
HadV15         980617.557  125p  Had.VSOLJ
HadV15         990313.775  120p  Had.VSOLJ

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

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