Comet Garradd position?

[gregbradley]

I tried imaging Comet Garradd last night as I knew it was near M15.
But I don't think I found it. I imaged a galaxy that looked like it might be a comet!

Does anyone know the current RA and Dec of the comet?

Greg.

[gregbradley]

I think I answered my own question.

Here is a link:

http://www.ast.cam.ac.uk/~jds/09p1.uk

Greg.

[mithrandir (Andrew)]

http://ssd.jpl.nasa.gov/horizons.cgi#top

Current Settings

Ephemeris Type [change] : OBSERVER
Target Body [change] : Comet C/2009 P1 (Garradd)
Observer Location [change] : Geocentric [500]
Time Span [change] : Start=2011-08-04, Stop=2011-08-14, Step=1 d
Table Settings [change] : defaults
Display/Output [change] : plain text

Ephemeris

**************************************************************************************************************
 Date__(UT)__HR:MN     R.A._(ICRF/J2000.0)_DEC  T-mag  N-mag            delta      deldot    S-O-T /r    S-T-O
**************************************************************************************************************
$$SOE
 2011-Aug-04 00:00     21 26 22.17 +13 14 58.7   9.15  12.09 1.50364531185998 -20.4520217 148.3178 /L  12.6909
 2011-Aug-05 00:00     21 22 47.95 +13 34 23.9   9.12  12.06 1.49212644319200 -19.4326429 148.6665 /L  12.6114
 2011-Aug-06 00:00     21 19 09.65 +13 53 36.1   9.09  12.04 1.48120055458583 -18.3989132 148.9210 /L  12.5655
 2011-Aug-07 00:00     21 15 27.42 +14 12 33.5   9.06  12.01 1.47087555473186 -17.3521519 149.0769 /L  12.5556
 2011-Aug-08 00:00     21 11 41.43 +14 31 14.2   9.03  11.99 1.46115858042285 -16.2937127 149.1304 /L  12.5837
 2011-Aug-09 00:00     21 07 51.87 +14 49 36.4   9.00  11.97 1.45205597549600 -15.2249883 149.0792 /T  12.6510
 2011-Aug-10 00:00     21 03 58.93 +15 07 38.1   8.97  11.95 1.44357326706331 -14.1474150 148.9220 /T  12.7586
 2011-Aug-11 00:00     21 00 02.84 +15 25 17.5   8.94  11.94 1.43571513855345 -13.0624787 148.6590 /T  12.9066
 2011-Aug-12 00:00     20 56 03.83 +15 42 32.7   8.92  11.92 1.42848539978928 -11.9717191 148.2916 /T  13.0948
 2011-Aug-13 00:00     20 52 02.15 +15 59 22.0   8.89  11.91 1.42188695463137 -10.8767339 147.8222 /T  13.3222
 2011-Aug-14 00:00     20 47 58.06 +16 15 43.5   8.87  11.90 1.41592176701413  -9.7791803 147.2547 /T  13.5874
$$EOE
**************************************************************************************************************

or for Stellarium

[Garradd_C2009_P1]
# Data taken from JPL/HORIZONS
# correct for the specified time frame:
# Start Time : A.D. 2011-Aug-04 00:00:00.0000 UT      
# Stop Time  : A.D. 2011-Aug-04 00:00:00.0000 UT      
name                        = Comet Garradd (C/2009 P1)             
parent                      = Sun
coord_func                  = comet_orbit
radius                      = 10
oblateness                  = 0.0
albedo                      = 1
lighting                    = true
halo                        = true
color                       = 1.0,1.0,1.0
tex_halo                    = star16x16.png
tex_map                     = nomap.png
orbit_Epoch                 = 
 2011-Aug-04 00:00:00.000     21 26 22.17 +13 14 58.7   9.15  12.09 1.50364531185998 -20.4520217 148.3178 /L  12.6909

orbit_TimeAtPericenter      = 2011
orbit_PericenterDistance    = 2011
orbit_Eccentricity          = 2011
orbit_ArgOfPericenter       = 2011
orbit_AscendingNode         = 2011
orbit_Inclination           = 2011

# use M1 and k1 for the total magnitude of comets
#  absolute_magnitude = M1  brightness when 1 AU from sun and 1 AU from earth
#  slope_parameter = 0.4*k1 rate of brightening when approaching the sun
type                        = comet
absolute_magnitude          = 4.8
slope_parameter             = 3.6

[gregbradley]

I tried that position for the 4th of Aug and didn't pick up anything.

Hmmm. I wonder where it is.

Greg.

[jjjnettie (Jeanette)]

I took my image of Garrad in the wee hours of this morning.
http://www.iceinspace.com.au/forum/s...ad.php?t=78957
It stood out very well in my framing shots of 10sec @ iso6400.