Comet C/2019 Y4 (ATLAS)
Comet C/2019 Y4 (ATLAS) obtained on 2020 Mar. 23 (21h53-22h23UT) with 19-cm, f/4 Flat Field Camera and Canon EOS 6D DSLR. Exposure time was 15x120 seconds at ISO 1600. FOV is 1.7° x 1.1°.
Copyright © 2020 by H. Mikuz, Črni Vrh Observatory.tory.
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Light-curve of C/2017 T2 (PANSTARRS) (Apr 05, 2020).
| Type | Comet name | Obs date | Mag | App | T | Pow | Dia | DC | Tail | PA | Obs |
|---|---|---|---|---|---|---|---|---|---|---|---|
| V | C/2019 Y1 | 2020 04 05.13 | 8.6 | 25.4 | T | 96 | 3.4 | 4 | COLac | ||
| V | C/2019 Y1 | 2020 04 05.13 | 8.7 | 28.0 | T | 112 | 3 | 3 | CSO | ||
| V | C/2019 Y4 | 2020 04 05.10 | 9.2: | 25.4 | T | 96 | 2.5 | 4/ | COLac | ||
| V | C/2019 Y4 | 2020 04 04.97 | 8.8 | 10.0 | B | 25 | 5 | 4 | SCI | ||
| V | C/2017 T2 | 2020 04 04.86 | 8.6 | 25.4 | T | 96 | 2.9 | 4/ | COLac | ||
| C | C/2019 Y1 | 2020 04 04.85 | 8.0 | 40.0 | Y | a180 | 4.89 | KIIaa | |||
| C | C/2019 Y4 | 2020 04 04.84 | 8.5 | 40.0 | Y | a180 | 6.2 | KIIaa | |||
| C | C/2017 T2 | 2020 04 04.84 | 8.2 | 40.0 | Y | a180 | 6.2 | KIIaa | |||
| V | C/2017 T2 | 2020 04 04.83 | 9.9 | 28.0 | T | 112 | 2.5 | 2 | CSO | ||
| V | C/2019 Y4 | 2020 04 04.82 | 9.0 | 28.0 | T | 112 | 2.5 | 2 | CSO | ||
| V | C/2017 T2 | 2020 04 04.82 | 8.5: | 10.0 | B | 25 | & 3 | 3/ | SCI | ||
| V | C/2019 Y1 | 2020 04 04.78 | 7.4 | 10.0 | B | 25 | & 5 | 4 | SCI | ||
| C | C/2019 Y4 | 2020 04 03.90 | 8.7 | 9.0 | R | B129 | 9.4 | JAMaa | |||
| V | C/2017 T2 | 2020 04 03.89 | 9.6: | 25.4 | T | 96 | 3 | 4 | COLac | ||
| C | C/2019 Y4 | 2020 04 03.22 | 8.4 | 10.6 | R | a720 | 19.8 | HER02 | |||
| C | C/2019 Y4 | 2020 04 03.22 | 9.6 | 10.6 | R | a720 | 8.2 | HER02 | |||
| V | C/2019 Y4 | 2020 04 03.14 | [9.5 | 15.0 | T | 36 | AGUaa | ||||
| V | C/2019 Y1 | 2020 04 03.11 | 8.5 | 5.0 | B | 10 | 3 | 7 | GUZ | ||
| V | C/2017 T2 | 2020 04 03.10 | 8.5 | 5.0 | B | 10 | 5 | 4 | GUZ | ||
| V | C/2019 Y4 | 2020 04 03.09 | 8.2 | 5.0 | B | 19 | 8 | 4 | GUZ |
| Comet name | Mag | Trend | Observable | Visiblity 45N |
Visiblity 45S |
|---|---|---|---|---|---|
| C/2019 Y4 (ATLAS) | 8.0 | bright | 90N to 22S | All night | Never up |
| C/2017 T2 (PANSTARRS) | 8.5 | bright | 90N to 20S | All night | Never up |
| C/2019 Y1 (ATLAS) | 8.5 | bright | 90N to 37S | All night | Never up |
| 210P/Christensen | 11.5 | bright | 90N to 78S | Poor elongation | Poor elongation |
| 58P/Jackson-Neujmin | 12.5 | bright | 86N to 90S | Early evening | Early evening |
| C/2008 Y12 (SOHO) | 12.5 | bright | 56N to 90S | Best morning | Best morning |
| C/2018 N2 (ASASSN) | 13.5 | fade | 90N to 35S | All night | Never up |
| C/2020 A2 (Iwamoto) | 14.0 | fade | 90N to 43S | All night | Never up |
| 29P/Schwassmann-Wachmann | 14.0 | steady | 90N to 72S | 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.
In order to unify the camera type abbreviation keys of all Moravian instrument models, we had to change some of the currently used camera type keys.
CBET 4740 & MPEC 2020-G05, issued on 2020, April 01, announce the discovery of a comet (magnitude ~17) in infrared images obtained with the Near-Earth Object Wide-field Infrared Survey Explorer (or NEOWISE; formerly the WISE earth-orbitingsatellite; cf. CBET 4225). The new comet has been designated C/2020 F3 (NEOWISE).
CBET 4739 & MPEC 2020-G04, issued on 2020, April 01, announce the discovery of a comet by R. Wainscoat on CCD images obtained on Mar. 22.6 UT with the Pan-STARRS1 1.8-m Ritchey-Chretien reflector at Haleakala, which he then noticed (via posting at the Minor Planet Center's NEOCP webpage) was apparently identical with an apparently asteroidal object (magnitude ~19) discovered on CCD images taken the previous night with a 0.5-m f/2 Schmidt reflector at Haleakala, Hawaii, in the course of the "Asteroid Terrestrial-Impact Last Alert System" (ATLAS) search program. The new comet has been designated C/2020 F2 (ATLAS).
Scientists have detected ammonium salts on the surface of Comet 67P/Churyumov-Gerasimenko (shown in this image bellow) by analysing data collected by the Visible, Infrared and Thermal Imaging Spectrometer (VIRTIS) on ESA’s Rosetta mission between August 2014 and May 2015.
MPEC 2020-C111, issued on 2020, February 06, announces the discovery of a comet (magnitude ~20) by D. Rankin in the course of the Mt. Lemmon Survey (G96), in images taken on 2020, Jan 29 with a 1.5-m reflector + 10K CCD. The new comet has been designated C/2020 B3 (Rankin).
