記事タイトル:Comet C/2002 Y1 (Juels-Holvorcem) 

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[2005年5月11日 5時8分6秒]

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[2005年5月11日 1時23分48秒]

お名前: 佐藤 裕久   
Charles W. Juels (Fountain Hills、アリゾナ州)とPaulo R. Holvorcem (Campinas、
ブラジル)は、Fountain Hillsの0.12-m屈折望遠鏡+CCDから得た画像から彗星が発見した。
Holvorcemの報告によれば、12月28.5日UT頃に得た5つの45秒露光と1つの90秒露光を一緒に
加えることで1.8′のコマが明らかになった。
NEO Confirmation Pageに掲載された後、他の数人の観測者が外見は彗星上であることを
報告した。D. T. Durig (Cordell-Lorenz天文台、Sewanee、テネシー州)は、0.3-m反射
+CCDに300秒の露光で30″のコマとより広い2.5′の拡散した輝きが見える。

発見位置は次のとおり、

     2002 UT             R.A. (2000) Decl.        m1
     Dec. 28.43892   13 24 01.30   +16 49 16.3   15.1

暫定放物線軌道要素と位置推算表は次のとおり、

Orbital elements:
    C/2002 Y1 (Juels-Holvorcem)
T 2003 Apr. 10.532 TT                                   MPC
q   0.67088              (2000.0)            P               Q
                   Peri.  131.057       +0.687707       +0.692595
                   Node   166.893       -0.235385       -0.070885
e   1.0            Incl.  106.303       +0.686770       -0.717835
From 17 observations 2002 Dec. 28-29.

Ephemeris:
    C/2002 Y1 (Juels-Holvorcem)
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase   m1
2002 12 22    13 12.47   +14 38.4    1.987    2.055    79.8    28.1  15.6
2002 12 27    13 21.32   +16 17.1    1.842    1.985    83.4    29.5  15.3
2003 01 01    13 31.02   +18 17.1    1.698    1.915    86.8    30.8  15.0
2003 01 06    13 41.85   +20 43.0    1.558    1.844    90.1    32.2  14.6
2003 01 11    13 54.19   +23 40.3    1.424    1.772    93.0    33.7  14.3
2003 01 16    14 08.66   +27 15.3    1.296    1.700    95.5    35.2  13.9
2003 01 21    14 26.15   +31 34.3    1.178    1.627    97.2    36.9  13.5
2003 01 26    14 48.12   +36 41.2    1.073    1.553    98.0    38.9  13.1
2003 01 31    15 16.86   +42 33.1    0.984    1.480    97.4    41.3  12.7
2003 02 05    15 55.99   +48 51.6    0.917    1.406    95.2    44.3  12.3
2003 02 10    16 50.41   +54 50.5    0.874    1.331    91.2    47.8  11.9
2003 02 15    18 03.44   +59 12.5    0.859    1.257    85.5    51.5  11.7
2003 02 20    19 28.34   +60 39.7    0.871    1.183    78.8    55.0  11.4

(IAUC 8039、MPEC 2002-Y50)
[2002年12月30日 20時13分2秒]

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