[BAA Comets] Very rare outburst of Comet 174P/Echeclus / Asteroid (60558) Echeclus
Andrew Mickleburgh
andrew.mickleburgh at ntlworld.com
Tue Aug 30 15:24:17 BST 2016
All,
Data from last night,
COD Z99
CON A.Mickleburgh, 38 Clixby Close, Cleethorpes. United Kingdom, DN35 0HS [andrew.mickleburgh at ntlworld.com]
OBS A. Mickleburgh
MEA A.Mickleburgh
TEL 0.356-m f/8 Schmidt-Cassegrain + CCD
ACK MPCReport file updated 2016.08.30 05:09:27
AC2 andrew.mickleburgh at ntlworld.com
NET UCAC-4
60558 KC2016 08 30.12680 01 26 55.04 +07 03 44.0 15.4 V Z99
60558 KC2016 08 30.13409 01 26 54.96 +07 03 43.4 15.4 V Z99
60558 KC2016 08 30.14138 01 26 54.89 +07 03 42.8 15.4 V Z99
----- end -----
OBSERVER: A. Mickleburgh
CONTACT: A.Mickleburgh, 38 Clixby Close, Cleethorpes. United Kingdom, DN35 0HS [andrew.mickleburgh at ntlworld.com]
TELESCOPE: 0.356-m f/8 Schmidt-Cassegrain + CCD
EXPOSURE JD: Mid-exposure, not corrected for light time
-----------------------------------------------------
JD mag SNR ZeroPt Design.
-----------------------------------------------------
2457630.62680 15.380 V 230.23 26.257 60558
2457630.63409 15.387 V 210.50 26.264 60558
2457630.64138 15.377 V 171.63 26.267 60558
----- end -----
Regards,
Andy Mickleburgh
-----Original Message-----
From: Comets-disc [mailto:comets-disc-bounces at britastro.org] On Behalf Of denis buczynski
Sent: 29 August 2016 02:34
To: BAA Comets discussion list
Subject: Re: [BAA Comets] Very rare outburst of Comet 174P/Echeclus / Asteroid (60558) Echeclus
Hello all,I was able to get some images just now in hazy skies. My measurements confirm the brightening.
Here is my astrometry
COD I81
OBS D.Buczynski
MEA D.Buczynski
TEL 0.35-m Schmidt-Cassegrain + CCD + f/6 focal reducer
ACK MPCReport file updated 2016.08.29 01:11:12
AC2 buczynski8166 at btinternet.com
NET UCAC-4
0174P C2016 08 29.03671 01 27 04.87 +07 05 21.8 15.3 N I81
0174P C2016 08 29.03816 01 27 04.85 +07 05 21.7 15.2 N I81
0174P C2016 08 29.03997 01 27 04.85 +07 05 21.4 15.3 N I81
0174P C2016 08 29.04215 01 27 04.81 +07 05 21.2 15.2 N I81
0174P C2016 08 29.04364 01 27 04.80 +07 05 21.1 15.2 N I81
0174P C2016 08 29.04651 01 27 04.77 +07 05 20.8 15.2 N I81Denis Buczynski
From: Richard Miles <rmiles.btee at btinternet.com>
To: Observadores_cometas at yahoogroups.com; asvcometsection at yahoogroups.com; comets-ml at yahoogroups.com; BAA Comets discussion list <comets-disc at britastro.org>; les_cometes at yahoogroupes.fr
Cc: Alan Fitzsimmons <afitzsimmonsqub at gmail.com>; Colin Snodgrass <c.d.b.snodgrass at gmail.com>; Meabh Hyland <mhyland02 at qub.ac.uk>
Sent: Monday, 29 August 2016, 1:39
Subject: [BAA Comets] Very rare outburst of Comet 174P/Echeclus / Asteroid (60558) Echeclus
Comet 174P has within the last 24 hours undergone a strong (2.6 mag)
outburst as detected by Paul Camilleri observing from Blue Mountains
Observatory, Leura, NSW, Australia (MPC Q68). Time of outburst appears to
have been 2016 August 28.2 +/-0.4. Paul has asked me to alert observers.
Here are the results of my photometric measurements of some of Paul
Camilleri's images:
COD Q68
COM Filter: Clear
COM Photometric aperture: 5.2" radius
OBS P. Camilleri
MEA R. Miles
TEL 0.30-m f/5.4 Schmidt-Cassegrain + CCD
ACK MPCReport file updated 2016.08.28 22:20:00
NET UCAC-4
0174P C2016 08 27.71786 01 27 15.82 +07 07 18.5 17.76N
Q68
0174P C2016 08 27.74484 01 27 15.60 +07 07 16.1 17.92N
Q68
0174P C2016 08 28.68603 01 27 07.86 +07 05 55.1 15.21N
Q68
0174P C2016 08 28.70610 01 27 07.68 +07 05 53.3 15.23N
Q68
----- end -----
Here is confirmation of the outburst using one of the 1.0-m LCOGT telescopes
at Sutherland, South Africa:
COD K92
COM Filter: SDSS-r'
COM Photometric aperture: 5.6" radius
OBS R. Miles, LCOGT
MEA R. Miles
TEL 1.0-m f/8.0 Ritchey-Chretien + CCD
ACK MPCReport file updated 2016.08.28 23:56:45
AC2 rmiles at baa.u-net.com
NET UCAC-4
0174P C2016 08 28.98523 01 27 05.32 +07 05 28.8 15.27N
K92
0174P C2016 08 28.98742 01 27 05.30 +07 05 28.8 15.27N
K92
0174P C2016 08 28.98960 01 27 05.28 +07 05 28.6 15.29N
K92
----- end -----
Further confirmation from LCOGT, Tenerife. Single measurement - other images
affected by mist.
COD Z21
COM Filter: SDSS-r'
COM Photometric aperture: 5.7" radius
OBS R. Miles, LCOGT
MEA R. Miles
TEL 0.40-m f/8 Schmidt-Cassegrain + CCD
ACK MPCReport file updated 2016.08.29 00:16:16
NET UCAC-4
0174P C2016 08 28.98311 01 27 05.38 +07 05 27.6 15.25N
Z21
----- end -----
Jean-François Soulier has also provided accurate astrometry/photometry as
follows:
COD C10
COM Filter: Clear
COM Photometric aperture: 6.5" radius
CON JEAN-FRANCOIS SOULIER [jean-francois.soulier2 at wanadoo.fr]
OBS J.-F. Soulier
MEA J.-F. Soulier
TEL 0.30-m f/3.8 Newtonian reflector + CCD
ACK MPCReport file updated 2016.08.28
AC2 jean-francois.soulier2 at wanadoo.fr
NET UCAC-4
0174P C2016 08 28.94562 01 27 05.67 +07 05 30.3 15.44N
C10
0174P C2016 08 28.96921 01 27 05.47 +07 05 28.3 15.37N
C10
0174P C2016 08 28.99322 01 27 05.26 +07 05 26.2 15.33N
C10
----- end -----
This object appears to have undergone two outbursts since its discovery in
2000 by Steward Observatory (Spacewatch) as a then asteroidal object. That
of 2005 December / 2006 January was slighly brighter than this one and was
associated with the appearance of a disintegrating chunk of material, which
was well observed with large telescopes. The object was subsequently
assigned a number as a periodic comet. A second outburst of 2011 May was
considerably fainter than the present event. It is currently 16 months after
perihelion (q = 5.82 AU,Q = 15.54 AU, Period = 34.9 yr).
Observers are strongly urged to monitor the development of this most rare
outburst.
Richard Miles
British Astronomical Association
_______________________________________________
Comets-disc mailing list
Comets-disc at britastro.org
http://lists.britastro.org/mailman/listinfo/comets-disc
_______________________________________________
Comets-disc mailing list
Comets-disc at britastro.org
http://lists.britastro.org/mailman/listinfo/comets-disc
More information about the Comets-disc
mailing list