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[vsnet-alert 2723] U Sco comparison stars (Granslo)

From owner-vsnet-obs@kusastro.kyoto-u.ac.jp Sun Feb 28 08:37 JST 1999
Date: Sun, 28 Feb 1999 00:37:40 +0100
From: "Bjorn H. Granslo" <b.h.granslo@astro.uio.no>
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Subject: [vsnet-obs 19465] U Sco observation 1999 Feb 27 (GRL)
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*** Recurrent nova U Scorpii in rare outburst ***

Visual observation by Bjorn H. Granslo (Fjellhamar, Norway):

  Date 1999      Estimates  Class  Mag    Instrument
Feb. 27.185 UT  B-3;6=V,7+3   1    9.6   20.3-cm SCT(100x)

Due to clouds U Sco was only clearly seen for a few minutes.

List of bright comparison stars:
Id   R.A. (2000.0) Decl   V-mag  sV     B-V   sB-V  Star name
     h  m   s    o  '  "
 1  16 22 53.6 -17 01 09   6.87  0.01  +0.36  0.01  TYC 6206-1804
 2  16 27 01.7 -17 46 07   7.23  0.01  +0.50  0.01  TYC 6207-0172 
 3  16 20 29.4 -18 41 25   7.80  0.01  +1.25  0.02  TYC 6206-0807
 4  16 20 34.4 -17 04 54   8.36  0.02  +1.10  0.03  TYC 6206-1762
 A  16 24 41.4 -17 33 39   8.62  0.02  +0.51  0.02  TYC 6207-0834
 5  16 22 51.9 -17 09 10   8.94  0.02  +1.20  0.04  TYC 6206-0179
 B  16 21 04.0 -17 41 51   9.25  0.03  +0.70  0.03  TYC 6206-0554
 C  16 24 56.8 -18 04 51   9.60  0.03  +1.57  0.10  TYC 6207-0472
 6  16 24 26.0 -17 44 43   9.67  0.03  +0.56  0.04  TYC 6207-0102
 7  16 21 56.9 -17 30 56   9.91  0.04  +0.66  0.06  TYC 6206-0256
 8  16 21 36.0 -17 37 28  10.15  0.06  +1.64: 0.26  TYC 6206-0442
 D  16 23 16.1 -17 50 15  10.68  0.07  +0.50  0.08  TYC 6206-0320
 E  16 22 25.8 -18 02 59  10.71  0.09  +1.56: 0.42  TYC 6206-0757
 9  16 23 08.4 -17 41 09  11.08  0.14  +1.18: 0.36  TYC 6206-0535

Positions, magnitudes and B-V colours (with uncertainties) are
taken from the Tycho Catalogue (ESA 1997). Letter identifications
(A-E) are due to 'The Astronomer' (GMH 870516).

                             Yours sincerely,
                             Bjorn H. Granslo

---
Observation reformatted to VSNET format:
SCOU 990227.185 96 GRL

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