[vsnet-alert 5441] RZ Leo: most recent outbursts

[Patrick Schmeer <extpasc@rz.uni-sb.de>]

On Thu, Dec 21, 2000 at 02:33:03AM +0900, Taichi Kato wrote in
[vsnet-alert 5438]:

> RZ Leo: call for immediate follow-up observations!
> 
>    As reported by Rod Stubbings in [vsnet-alert 5437], the possible WZ Sge
> type dwarf nova RZ Leo is undergoing an extremely rare outburst!
> Despite a number of unconfirmed possible sighting reports, the last
> time when the outburst of this star was observed dates back to 1987!
 
On 1989 Mar. 10.9 UT I observed RZ Leo at mv= 13.5 - that one was probably a
normal outburst (see also IAUC 4757).

On 1990 Oct. 27 Gerald Dyck made a 12.8 mag estimate - apparently another
normal outburst.

The last recorded (likely) superoutburst occurred on 1987 Nov. 28 (cf. IAUC 
4504).

On the basis of the last four recorded outbursts I get a mean cycle length
of 527 days. The supercycle may be 13 years!
 
Regards,
Patrick 
 
P.S.:
RZ Leo is one of the top-priority objects on my program. Unfortunately I
could not observe this likely SU UMa-type dwarf nova the last days due to
overcast skies.

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