Comet C/2013 V5 (Oukaimeden)
Abstract
An apparently asteroidal comet discovered by Michel Ory on CCD images obtained with a 0.5-m f/3 reflector at the Oukaimeden Observatory, Marrakech (discovery observations tabulated below), and posted on the Minor Planet Center's NEOCP and PCCP webpages, has been found to show cometary appearance by CCD astrometrists elsewhere. 2013 UT R.A. (2000) Decl. Mag. Observer Nov. 12.14915 7 34 04.03 +22 46 24.4 19.4 Ory 12.15944 7 34 03.61 +22 46 24.7 19.4 " 12.16966 7 34 03.22 +22 46 24.6 19.2 " 12.17988 7 34 02.83 +22 46 24.7 19.4 " Fifty-eight stacked 30-s exposures taken remotely by E. Guido, N. Howes, and M. Nicolini with an iTelescope 0.43-m f/6.8 astrograph at Siding Spring on Nov. 12.6 UT show a diffuse coma about 10" in diameter of red mag 18.4-18.5. L. Buzzi (Varese, Italy, 0.60-m f/4.6 reflector) finds a condensed coma 10" wide, elongated in p.a. 320 deg, on images taken on Nov. 13.1. Sixty stacked 20-s images taken by R. Holmes (Ashmore, IL, USA, 0.61-m f/4.5 astrograph; measured by L. Buzzi and three others) on Nov. 13.4 show an obvious round coma 8".9 in diameter with a broad tail 11".1 long in p.a. 279.2 deg. Peter Birtwhistle (Great Shefford, Berkshire, England, 0.40-m f/6 Schmidt-Cassegrain reflector; Nov. 13.2) found the object to appear essentially stellar but slightly softer on the western side, with a possible faint extension 9" long in p.a. 285 deg. H. Sato (Tokyo, Japan; remotely with an iTelescope 0.51-m f/6.8 astrograph; Nov. 13.7) writes that eight stacked 60-s exposures show a strongly condensed coma 15" in diameter with a faint, fan-like tail 25" long toward p.a. 300 degrees; the luminance-filter magnitude as measured within a circular aperture of radius 8".8 was 18.3. Sixty stacked 60-s taken by Holmes with a 0.81-m f/4 astrograph on Nov. 14.4 (measaured by S. Foglia and six others) show a round, compact coma of diameter 8" and a wide tail 12" long in p.a. 295 deg. The available astrometry, the following parabolic orbital elements by G. V. Williams, and an ephemeris appear on MPEC 2013-V95. T = 2014 Sept.27.9365 TT Peri. = 314.3941 Node = 278.6185 2000.0 q = 0.627849 AU Incl. = 154.9264
- Publication:
-
Central Bureau Electronic Telegrams
- Pub Date:
- November 2013
- Bibcode:
- 2013CBET.3713....1G