Comet C/2018 Y1 (Iwamoto)
Image of comet C/2018 Y1 (Iwamoto), passing the open clusters M38 and NGC 1907 in Auriga. Obtained on 2019 Feb. 28 (21h40-22h47UT) with 15-cm, f/6 Maksutov-Cassegrain astrograph
and Canon EOS 6D DSLR. Exposure time was 66 minutes at ISO 3200.
Copyright © 2019 by H. Mikuz, Črni Vrh Observatory.
Comet Observation database (COBS) saw first light in 2010 and is maintained by Crni Vrh Observatory. It is a free and unique service for comet observers worldwide which allows submission, display and analysis of comet data in a single location.
Amateur astronomers can make valuable contributions to comet science by observing comets and submitting their observations to COBS as professional astronomers typically do not have telescope time required to acquire regular observations. We therefore encourage comet observers worldwide to submit their observations and contribute to the COBS database.
Registered observers may submit observations using a web based form which which stores the observations in an SQL database and stores them in ICQ format. Observations may be queried and plotted in the web site or exported for further processing, analysis and publication. The database currently contains more than 240000 comet observations of more than 1200 different comets and represents the largest available database of comet observations.
The data stored in COBS is freely available to everyone who honors our data usage policy. Please cite COBS as the reference if you use it for comet studies.
Light-curve of C/2018 Y1 (Iwamoto) (Apr 23, 2019).
Type Comet name Obs date Mag App T Pow Dia DC Tail PA Observer V 123 2019 04 22.89 13.7 53.1L 155 1.1 3 HAR11 C 38 2019 04 22.14 14.6 10.6R a180 2.1 6.9m265 RAMaa C 46 2019 04 22.13 13.6 10.5R a180 6 RAMaa C 46 2019 04 21.91 15.3 10.0R A742 1.3 FRIaa C 2015O1 2019 04 21.88 15.6 10.0R B164 1.6 FRIaa V 123 2019 04 21.86 13.1 30.0L 96 1 3 HAR11 C 2018Y1 2019 04 21.84 12.3 10.0R A622 3.7 FRIaa C 2018L2 2019 04 16.10 14.7 10.0R A141 0.8 FRIaa C 2016R2 2019 04 16.05 15.4 10.0R A983 1.3 FRIaa C 2010U3 2019 04 15.97 16.4 10.0R E168 1.2 FRIaa C 64 2019 04 15.88 15.7 10.0R A983 1.2 FRIaa C 2018Y1 2019 04 15.84 12.1 10.0R A742 4.8 FRIaa V 123 2019 04 09.90 13.8 53.1L 155 0.8 3 HAR11 C 2018W2 2019 04 08.90 15.9 20.0L C480 0.8 0.01 75 LEHaa V 123 2019 04 08.88 12.5 53.1L 155 1 3 HAR11more...
Comet Mag Trend Observable When visible
45N 45S
C/2016 M1 (PANSTARRS) 12.0 fade 48N to 90S Early evening Best evening
123P/West-Hartley 13.0 fade 90N to 65S Best morning Best evening
C/2018 Y1 (Iwamoto) 13.0 fade 90N to 56S Evening Early evening
29P/Schwassmann-Wachmann 13.5 steady 90N to 81S Early evening Early evening
C/2017 M4 (ATLAS) 13.5 steady 55N to 90S Best morning Best morning
C/2017 T2 (PANSTARRS) 13.5 bright 90N to 82S Early evening Early evening
78P/Gehrels 14.0 steady 90N to 75S Poor elongation Poor elongation
C/2018 N2 (ASASSN) 14.0 steady 84N to 90S Poor elongation Poor elongation
The observable region is an approximate indication of the latitude at which the comet may be seen. The period when visible is calculated for latitude 45°N and 45°S.
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