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[vsnet-alert 5216] V854 Cen Apparent Decline
- Date: Mon, 28 Aug 2000 20:20:48 +1000
- To: "vsnet-alert" <vsnet-alert@kusastro.kyoto-u.ac.jp>
- From: "Peter F Williams" <pfwilliams@onaustralia.com.au>
- Subject: [vsnet-alert 5216] V854 Cen Apparent Decline
- Cc: "vsnet-rcb" <vsnet-rcb@kusastro.kyoto-u.ac.jp>, "vsnet-obs" <vsnet-obs@kusastro.kyoto-u.ac.jp>, "Frank Bateson-VSS,RASNZ" <varstar@voyager.co.nz>, "AAVSO Observations" <observations@aavso.org>
- Reply-To: <pfwilliams@onaustralia.com.au>
- Sender: owner-vsnet-alert@kusastro.kyoto-u.ac.jp
The RCB star V854 Cen may have commenced to decline as indicated by the
following visual observations:
STAR YYMMDD(UT) MAG OBSERVER
CENV854 20000804.390 73 WPX
CENV854 20000807.410 73 WPX
CENV854 20000809.407 73 WPX
CENV854 20000810.931 73 WPX
CENV854 20000814.409 74 WPX
CENV854 20000817.368 73 WPX
CENV854 20000821.385 74 WPX
CENV854 20000824.434 76 WPX
CENV854 20000826.388 78 WPX
CENV854 20000828.396 80 WPX
Maximum brightness shown above is very near the recently much quoted
ephemeris of Lawson (JD 2447400.6 + 43.2 days; August 07 = JD 2451763) and
considering the relatively rapid fade to magnitude 8, this may be the much
anticipated decline. If correct, this will be the first decline since 1999
May and the 14th fade since regular observation of V854 Cen commenced in
1986 July.
Observations over the next few days will confirm if this is correct.
Regards
Peter Williams
Heathcote NSW
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