[Aavso-photometry] asking about observation

[Mike Simonsen]

Evan,

It is very nearly impossible to predict with an reliability when a UGSU will
go into outburst. The three objects you describe in particular, have quite
different outburst cycles.

YC Cnc is your best bet for observing outbursts and a superoutburst in the
time frame of your run. It has a normal outburst cycle of 6-16 days, so it's
very active. Superoutbursts occur about 134 days apart on average. It is in
fact going into outburst again right now.
T Leo only goes off about once every 420 days, and has recently been in
outburst, so your chances of observing an outburst in your observing window
are slim to none. To the best of my recollection  T Leo only exhibits
superoutbursts. No regular or normal outbursts.
Both these systems will be approaching conjunction with the sun in
spring/summer, so they are not ideal in that respect.

OY Car has fairly frequent normal outbursts (2-3 weeks?), with
superoutbursts occurring 325 days apart on average.

If you want to keep abreast of up to the minute reports on these and other
CVs you can scan the Quick Look data at AAVSO:
http://www.aavso.org/data/ql/

Or check the CVnet Home Page for Recent Activity:
http://cvnet.aavso.org

I hope this helps.

Regards,
Mike Simonsen

*********************************
C. E. Scovil Observatory
http://home.mindspring.com/~mikesimonsen/
AAVSO Chart Team
charts at aavso.org
CVnet Administrator
http://cvnet.aavso.org

**********************************

----- Original Message ----- 
From: "Evan Irawan Akbar" <evan at students.as.itb.ac.id>
To: <aavso-photometry at mira.aavso.org>
Sent: Thursday, February 16, 2006 9:06 PM
Subject: [Aavso-photometry] asking about observation


>
> Dear Sir,
>
> I'm sorry, I don't know where I should send this email. So, I just send it
> to your mail address.
>
> I want to observe some of dwarf novae type of SU UMa, but I don't know
when
> their next superoutburst would appear. Here's the list of objects:
> 1. OY Car (10 06 22.43,  -70 14 04.9)
> 2. T Leo  (11 38 26.96,   +3 22 08.1)
> 3. YZ Cnc (08 10 56.62.  +28 08 33.6)
> I'll observe them at Bosscha Observatory, Indonesia (107.5 east, -6.9
south)
> I'm planning to observe them on April-June 2006.
>
> May I know, when do they make outbursts again (the nearest event)?
> Thank you.
>
>
> Best regards,
> Evan Irawan Akbar
>
>  ---------------------------------------------------------
> Evan Irawan Akbar
> Departemen Astronomi
> Institut Teknologi Bandung
> Ganesha 10 - Bandung
> Indonesia - 40132
> (contact: +62817430314)
>
>
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