Month: September 2018

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Observation: AT2018gfh

AT2018gfh, Type unknown in UGC 12914
Discovered 2018-09-11.799 by PMO-Tsinghua Supernova Survey (PTSS), mag 18.5 at discovery
R.A. = 00h01m38s.450, Decl. = +23°29’02”.81

Observer: Cedric Raguenaud, SW France, GSNST
2018-09-12.858
Unconfirmed. Nothing is visible that close to the galaxy core.
0.25m/f4 reflector + CCMOS, 0.5″/pixel
6x300s, bin 1×1

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Observation: AT2018fjy

AT2018fjy, Type unknown
Discovered 2018-08-16.326 by ZTF, mag 14.19 at discovery
R.A. = 18h42m58s.200, Decl. = +73°42’28”.36

Observer: Cedric Raguenaud, GSNST
2018-08-31.934
Approx mag 18.65CV ±0.02, ZP=29.679mag
Note: the coordinates match that of  Gaia DR2 2267874403102366464, mag about 20 (g band)
0.25m/f4 reflector + CCMOS 0.5″/pixel
6x300s, bin 1×1

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Observation: AT2018fml

AT2018fml, Type unknown
Discovered 2018-08-23.199 by Gaia, mag 17.31 at discovery
R.A. = 16h52m04s.965, Decl. = +76°08’10”.68

Observer: Cedric Raguenaud, SW France, GSNST
2018-08-31.910
Approx mag 16.99CV ±0.01, ZP=29.204mag
Note: the candidate is extremely close to the core of the host galaxy (possibly PS1 199362530224694805). The luminosity of that galaxy is probably about 20 (g&r&i mag).
0.25m/f4 reflector + CCMOS 0.5″/pixel
6x300s, bin 1×1

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SN 2018fub

Supernova SN 2018fub in 2MASX J00403068-5041153.
Date of Observations: 2018-09-07.237
CV Magnitude: +17.71 +/- 0.06
Observer: Malhar R. Kendurkar, GSNST Team

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Observation: AT2018fna

AT2018fna, dwarf nova = HS 1857+7127 = V416 Draconis
Discovered 2018-08-24.946 by Gaia, mag 14 at discovery
R.A. = 18h57m20s.376, Decl. = +71°31’18”.77

Observer: Cedric Raguenaud, SW France, GSNST
2018-09-01.146
Approx mag 16.16CV ±0.00, ZP=29.574mag
0.25m/f4 reflector + CCMOS 0.5″/pixel
6x300s, bin 1×1