Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J18395972-1025415

TCP J18395972-1025415   2019 10 29.3974*  18 39 59.72 -10 25 41.5   9.4 U             Sct       N 0

2019 10 29.0578

Crowded field; several progenitor candidates are within few arc seconds. The transient is confirmed by recent ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) observations: 2019 October 28.064 UT, gmag. fainter than 17.1; 29.058, gmag. 11.56. No previous eruptions (or outbursts) were recorded since 2015 February 7; complete data and light curve at https://asas-sn.osu.edu/light_curves/f4d4863d-ca2a-4238-9adb-04bdd551bac9 --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2019 10 29.4526

Follow-up obs. : 2019 10 29.4526, position 18 39 59.54 -10 25 42.2, mag 9.4 U. Akira TAKAO (Kitakyushu, JAPAN)

2019 10 29.48

The Pan-STARRS1 source PSO J183959.479-102542.589 (zmag. 20.19; J2000.0 position end figures 59.48s, 42.6") is 1" from the position reported by Takao-san. --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2019 10 29.421

Mag.= 9.8, position end figures 59s.64, 42".4, independent discovered on three frames by H. Nishimura, Shizuoka-ken, Japan, using Canon EOS 6D digital camera + 200-mm f/3.2 lens.

2019 10 29.05

Already discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN) on 2019 Oct. 29.05 UT and reported on Oct. 29 at 02:07:49 UTC as ASASSN-19aad = AT 2019tpb: https://wis-tns.weizmann.ac.il/object/2019tpb --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2019 10 29.469

K.Itagaki,Follow-up. 2019 10 29.469 18 39 59.70 -10 25 41.5 Mag.= 9.0 http://k-itagaki.jp/images/PN-sct.jpg

2019 10 29.54

The Pan-STARRS1 source PSO J183959.711-102541.689 (imag. 20.81, zmag. 19.96; J2000.0 position end figures 59.71s, 41.7") is only 0.2" from the position reported by Itagaki-san. --- Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2019 10 29.462

Mag.= 9.8, position end figures 59s.86, 40".8 observed by S. Kaneko, Shizuoka-ken, Japan, using Canon 6D digital camera + 200-mm f/3.0 lens.

2019 10 29.749

Visual magnitude estimate: 2019 Oct. 29.749 UT, 9.3 (P. Schmeer, Bischmisheim, Germany).

2019 10 30.4248

This object seems to be getting brighter rapidly. Mag 8.3 U at 2019 10 30.4289. Akira TAKAO (Kitakyushu, JAPAN)