Comets - C/2018 C2 Lemmon - CK18C020
Type Hyperbolic Perihelion Date 2 June 2018 Perihelion Distance (q) 2.0 Aphelion Distance (Q) n/a Period (Years)   n/a Eccentricity (e)   1.0 Inclination (i)   34.5 Click for NASA orbit diagram
Hills Observatory: 1 January 2013 to 14 August 2018
COMETS COMETS
DEEP SKY DEEP SKY
An asteroidal object of 20th magnitude was found in Mt Lemmon Survey images taken with the 1.5m reflector on 5 February 2018. It was placed on the PCCP as ZC82561, because it had a slightly hyperbolic orbit, but no cometary activity had been detected. It was therefore given a cometary letter designation with an A/ prefix. On 22 March, images taken with the 3.6m Canada-France-Hawaii showed a broad faint tail, though with only a marginal coma. The designation was therefore changed to C/. Date 10x10 mag Error Kphot mag Coma ' 10-Apr-18 16.65 0.02 16.1 0.5 21-Apr-18 16.29 0.02 15.4 0.6 06-May-18 16.11 0.01 16.0 0.3 16-May-18 15.75 0.01 15.2 0.4 02-Jul-18 15.73 0.05 15.5 0.2 13-Jul-18 16.06 0.03 15.6 0.3 05-Aug-18   16.50   0.01   16.2   0.3