KOR01

Эфемерида кометы здесь http://cfa-www.harvard.edu/iau/Ephem...ts/2004H6.html
Удачных наблюдений!

KOR01

2004
May 22.81, 7.5:, 1'.5 (C. E. Drescher, Leyburn, Queensland,
Australia, 25x100 binoculars; alt. 7 deg; twilight);
[First positive obs. Comet found after start of twilight during wide
sweep of Eridanus searching for the SWAN candidate.]

May 27.80, 7.2*, 2'.5 (C. E. Drescher, Warrill View, Queensland,
Australia, 25x100 binoculars; alt. 10 deg);
[Round highly condensed coma DC=7 (no tail detected). Corrected for
extinction (w). Comet also easily seen in 12x50B from 4 deg altitude.]

Colin Drescher
Brisbane, Australia

KOR01

An new SOHO-SWAN comet was announced. Quote from IAUC 8346:

"On May 13, the Central Bureau was informed apparently
independently by X.-m. Zhou, K. Cernis, and M. Mattiazzo of the
existence of a possible unknown comet on the low-resolution
ultraviolet SWAN images taken from the SOHO spacecraft. As there
have been numerous never-confirmed reports to the Central Bureau of
such objects over the last couple of years, despite a great
exertion of effort to have them confirmed by ground-based observers,
we proceeded with caution to try and get solid confirming evidence
of a real comet. Reports trickled in (as can be seen from the
table below), but successive attempts to produce search ephemerides
met with some negative results that indicated some of the early
positions were apparently not of the new comet."

I calculated a first preliminary orbit from the available positions:

Orbital elements:
C/2004 H6 (SWAN)
Perihelion 2004 May 14.314538 TT
Epoch 2004 May 15.0 TT = JDT 2453140.5 Hoenig
q 0.779408 (2000.0) P Q
Peri. 271.96070 0.23789055 0.70920595
Node 315.80158 0.55787207 -0.65909122
e 1.0 Incl. 107.83214 -0.79510177 -0.25025122
From 10 observations 2004 May. 14-25;

Ephemerides:
Da Mon Year RA Dec delta r elong mag
-- --- ---- ------------ ------------ ------ ------ ----- ---
27 May 2004 03 24 54.618 -13 01 21.54 1.3644 0.8174 36.6 8.8
28 May 2004 03 23 08.223 -13 04 42.35 1.3544 0.8234 37.3 8.8
29 May 2004 03 21 20.751 -13 07 42.02 1.3439 0.8297 38.1 8.8
30 May 2004 03 19 32.141 -13 10 21.08 1.3331 0.8365 38.8 8.9
31 May 2004 03 17 42.322 -13 12 40.10 1.3218 0.8436 39.7 8.9
1 Jun 2004 03 15 51.218 -13 14 39.64 1.3101 0.8511 40.5 8.9
2 Jun 2004 03 13 58.740 -13 16 20.30 1.2980 0.8589 41.4 8.9
3 Jun 2004 03 12 04.792 -13 17 42.70 1.2856 0.8671 42.3 8.9
4 Jun 2004 03 10 09.265 -13 18 47.47 1.2727 0.8756 43.2 8.9
5 Jun 2004 03 08 12.041 -13 19 35.26 1.2595 0.8843 44.2 9.0
6 Jun 2004 03 06 12.986 -13 20 06.73 1.2460 0.8934 45.1 9.0
7 Jun 2004 03 04 11.954 -13 20 22.56 1.2321 0.9027 46.1 9.0
8 Jun 2004 03 02 08.785 -13 20 23.42 1.2179 0.9123 47.2 9.0
9 Jun 2004 03 00 03.302 -13 20 09.98 1.2034 0.9221 48.2 9.0
10 Jun 2004 02 57 55.315 -13 19 42.87 1.1887 0.9322 49.3 9.0
11 Jun 2004 02 55 44.615 -13 19 02.73 1.1736 0.9425 50.4 9.0
12 Jun 2004 02 53 30.979 -13 18 10.16 1.1582 0.9531 51.5 9.0
13 Jun 2004 02 51 14.167 -13 17 05.71 1.1426 0.9638 52.6 9.0
14 Jun 2004 02 48 53.918 -13 15 49.92 1.1268 0.9748 53.8 9.0
15 Jun 2004 02 46 29.957 -13 14 23.27 1.1108 0.9859 55.0 9.0

Sebastian

------------------------------------------------------
Sebastian F. Hцnig
Institut fьr Theoretische Astrophysik
Tiergartenstr. 15
69121 Heidelberg
Tel.: 06221-54-8988
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Bogomolov_

Анимашка симпатичная:

http://sohowww.nascom.nasa.gov/data/...ion-comets.gif

KOR01

Снимок кометы сделанный Велло Табуром

Timur

Красивенькая, но похоже, что у нас она плохо видна будет из-за -13 градусов...