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[vsnet-newvar 1063] New Nakamura variable (NryV1)

New Nakamura variable (NryV1)

   Yuji Nakamura (Suzuka, Mie, Japan) reports the discovery of a new variable
star (NryV1).

NryV1
(Nakamura's original position 192350.2 -050051, error ~20 arcsec)
= USNO0825.15684442 192349.642 -050042.60 (2000.0) 13.9 17.3
= IRAS19211-0506 192110.4 -050639 (1950.0)
    F12=1.10  F25=0.69  F60=0.40L F100=2.29L
    VAR=93 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
= 192349.6 -050046 (2000.0) IRAS19211-0506 1.081 0.710 0.400L 2.308L 93%
= 192349.6 -050046 (2000.0) SSC19211-0506 1.081 0.710 0.400L 2.308L

  NryV1  M  12.1-(14.0p

Photographic magnitude estimates by VSOLJ members

object         YYYYMMDD(UT)   mag  code
NryV1          20000708.623 <140p  Nry.VSOLJ
NryV1          20010519.666 <140p  Nry.VSOLJ
NryV1          20010713.620  135p  Nry.VSOLJ
NryV1          20010724.641  121p  Nry.VSOLJ
NryV1          20010731.670  130p  Nry.VSOLJ  (20cm f/4 reflector)
NryV1          20010814.568  129p  Nry.VSOLJ
NryV1          20010822.583  131p  Nry.VSOLJ

Observer's code:
  Nry: Y. Nakamura (Suzuka, Mie, Japan)
       Instruments: f=200mm f/4 lens + Tri-X, unfiltered unless otherwise
                    commented

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