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[AZ-Observing] Comet C/2003 G3 (SOHO)
- From: Brian Skiff <Brian.Skiff@xxxxxxxxxx>
- To: amastro@xxxxxxxxxxxxxxx, az-observing@xxxxxxxxxxxxx
- Date: Sat, 12 Apr 2003 00:09:54 -0700 (MST)
A Minor Planet Electronic Circular issued this evening details the
discovery of a new SOHO comet (of which there are several hundred). But this
one was unusual in that it is not a Kreutz-type sungrazer, but instead
evidently survived a relatively distant perihelion passage, and an ephemeris
for the coming weeks was provided.
The implication is that it might actually be visible from the ground
as it emerges from the Sun in the evening. The orbit and 10-day ephemeris
are copied below from: http://cfa-www.harvard.edu/mpec/K03/K03G63.html
Searches with substantial aperture very deep into twilight under excellent
conditions would be indicated, since the comet is likely to be very faint.
Getting astrometry would be useful, too, of course!
\Brian
-------------------------------------------------------------------------------
Observer details:
249 SOHO. SOHO-LASCO coronagraphs C3 and C2. Comet detection by J. Sachs,
measurements by D. Hammer, reduction by B. G. Marsden.
Orbital elements:
C/2003 G3 (SOHO)
T 2003 Apr. 5.30 TT MPC
q 0.0168 (2000.0) P Q
Peri. 174.63 +0.05042 -0.98262
Node 87.61 -0.92284 +0.02257
e 1.0 Incl. 169.70 -0.38186 -0.18427
>From 48 observations 2003 Apr. 4.
Ephemeris:
C/2003 G3 (SOHO)
Date TT R. A. (2000) Decl. Delta r Elong. Phase m1 m2
2003 04 11 02 31.49 +13 03.2 1.013 0.335 19.1 78.6
2003 04 16 03 21.77 +16 22.7 1.147 0.518 26.8 61.0
2003 04 21 03 57.67 +18 18.2 1.299 0.673 30.7 49.7
2003 04 26 04 24.85 +19 28.9 1.458 0.813 32.4 41.5
2003 05 01 04 46.38 +20 14.0 1.617 0.941 32.6 35.2
2003 05 06 05 04.08 +20 43.7 1.774 1.062 32.0 30.2
2003 05 11 05 19.09 +21 03.3 1.926 1.176 30.6 26.0
2003 05 16 05 32.13 +21 16.1 2.074 1.285 28.9 22.3
2003 05 21 05 43.68 +21 24.1 2.216 1.389 26.8 19.1
2003 05 26 05 54.08 +21 28.5 2.353 1.490 24.4 16.3
2003 05 31 06 03.58 +21 30.2 2.484 1.588 21.8 13.7
The above orbit is very uncertain, but inclinations near 170 deg
seem to fit the observations more satisfactorily than those near 10
deg.
Brian G. Marsden (C) Copyright 2003 MPC M.P.E.C. 2003-G63
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