C/2018 U1 (Lemmon)
DEPARTED
Type: Hyperbolic
Perihelion date: 2 November 2021
Perihelion distance (q): 5.0
Aphelion distance (Q) : n/a
Period (years): n/a
Eccentricity (e): 1.00
Inclination (i): 108.3
JPL orbit diagram
COBS lightcurve
An apparently asteroidal object of 20th magnitude was found in Mt Lemmon Survey
images taken with the 1.5m reflector on 27 October 2018. It was placed on the PCCP
as ZU8D586 and follow up observations showed that it was slightly diffuse.
Observations (VEMag = visual equivalent magnitude)
Date
10x10 mag
Error
VEmag
Coma '
08-Jun-19
18.57
0.04
18.4
0.2
25-Jun-19
18.61
0.15
18.6
0.2
08-Aug-19
18.43
0.07
18.4
0.2
27-Aug-19
18.27
0.02
18.0
0.2
03-Sep-19
18.28
0.04
17.4
0.3
18-Sep-19
18.26
0.06
18.1
0.2
30-Sep-19
18.22
0.11
18.0
0.2
16-Oct-19
18.19
0.11
18.1
0.2
26-May-20
17.19
0.01
17.0
0.2
20-Feb-21
15.7
0.4
19-Mar-21
15.3
0.4
14-Apr-21
15.2
0.4
04-May-21
14.6
0.4
14-May-21
14.7
0.4
04-Jun-21
15.35
0.02
14.7
0.4
14-Jun-21
15.23
0.03
14.8
0.4
01-Jul-21
15.37
0.03
15.0
0.4