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[vsnet-j 419] Possible Nova in Pup: prediscovery observations by Y. Nakamura
- Date: Fri, 5 Jan 2001 20:23:09 +0900 (JST)
- To: CBAT@CFA.HARVARD.EDU, vsnet-alert, vsnet-campaign-nova
- From: Taichi Kato <tkato>
- Subject: [vsnet-j 419] Possible Nova in Pup: prediscovery observations by Y. Nakamura
- Cc: GREEN@CFA.HARVARD.EDU, kazuyoshi.kanatsu@nifty.ne.jp, vsnet-j
- Sender: owner-vsnet-j@kusastro.kyoto-u.ac.jp
Possible Nova in Pup: prediscovery observations by Y. Nakamura
Yuji Nakamura (Suzuka, Mie, Japan) reports the following prediscovery
observations on his patrol films. The object was unseen on his Sep. 26.780
exposure, giving a conservative upper limit of 12.0 (probably fainter than
12.5). The major rise of the object took between 2000 Sep. 26 and Nov. 23
(Haseda's observation).
object YYYYMMDD(UT) mag observer
PUPnova2000 20000926.780 <120p Y. Nakamura
PUPnova2000 20001128.748 88p Y. Nakamura
PUPnova2000 20001229.733 91p Y. Nakamura
Observer: Yuji Nakamura (Suzuka, Mie, Japan),
Instruments: 200-mm lens (f/4) Tri-X film (unfiltered)
exposure time: 14m, 11m, 10m, respectively.
Comparison stars: Tycho-2 V-magnitude (re-calibrated by T. Kato)