Rotation Period in 2019 Apparition(NND2)

Object	NNTB dark spot	ID	NND2

Period		Data Count	30
Rotation Period	9h55m39.9s±1.6s	Refernce Date	2019/06/10
Drift Rate (deg./day)	-0.017±0.040	Refernce Longitude	98.4±1.2
Limiting Date	2019/01/24－2019/03/25	Latitude	+38.5±0.4
Limiting Longitude	102.7－98.1	Wind Velocity (m/sec)	-2.7±0.4

No.	Date	Time	Longitude	Sys.	PCF	Object	Location	Latitude	Observer	Est. Longitude	Error
1	2019/01/24	21:39	101.0	2	C	D SPOT	NNTB	+37.9	Kumamori, Teruaki	100.7	+0.3
2	2019/01/24	21:44	99.8	2	C	D SPOT	NNTB	+38.0	Einaga, Hideo	100.7	-0.9
3	2019/01/29	21:32	100.2	2	C	D SPOT	NNTB	+38.8	Kumamori, Teruaki	100.6	-0.4
4	2019/02/07	13:58	101.1	2	C	D SPOT	NNTB	+38.3	Maxson, Paul	100.5	+0.6
5	2019/02/12	21:40	102.7	2	C	D SPOT	NNTB	+39.2	Go, Christopher	100.4	+2.3
6	2019/02/17	21:15	102.4	2	C	D SPOT	NNTB	+38.5	Kumamori, Teruaki	100.3	+2.1
7	2019/02/19	03:20	99.5	2	C	D SPOT	NNTB	+38.3	Foster, Clyde	100.3	-0.8
8	2019/02/24	02:28	100.7	2	C	D BAR	NNTB	+38.3	Foster, Clyde	100.2	+0.5
9	2019/02/24	21:34	101.1	2	C	D SPOT	NNTB	+38.5	Einaga, Hideo	100.2	+0.9
10	2019/02/26	03:37	101.2	2	C	D BAR	NNTB	+38.2	Foster, Clyde	100.2	+1.0
11	2019/03/01	21:02	98.5	2	C	D SPOT	NNTB	+37.2	Kumamori, Teruaki	100.1	-1.6
12	2019/03/03	02:35	99.6	2	C	D SPOT	NNTB	+38.2	Foster, Clyde	100.1	-0.5
13	2019/03/05	03:33	99.5	2	C	D SPOT	NNTB	+38.2	Foster, Clyde	100.0	-0.5
14	2019/03/06	21:07	98.1	2	C	D SPOT	NNTB	+38.9	Go, Christopher	100.0	-1.9
15	2019/03/08	02:17	100.1	2	C	D SPOT	NNTB	+38.3	Foster, Clyde	100.0	+0.1
16	2019/03/08	21:11	98.6	2	C	D SPOT	NNTB	+37.9	Kumamori, Teruaki	100.0	-1.4
17	2019/03/09	08:20	99.6	2	C	D BAR	NNTB	+38.9	Carvalho, Fabio	100.0	-0.4
18	2019/03/09	18:46	99.2	2	C	D BAR	NNTB	+38.2	Wesley, Anthony	100.0	-0.8
19	2019/03/10	03:11	99.0	2	C	D BAR	NNTB	+38.5	Foster, Clyde	99.9	-0.9
20	2019/03/10	13:02	100.0	2	C	D SPOT	NNTB	+38.2	Maxson, Paul	99.9	+0.1
21	2019/03/11	19:43	99.4	2	C	D SPOT	NNTB	+38.9	Suzuki, Kunihiko	99.9	-0.5
22	2019/03/13	02:43	99.7	2	C	D SPOT	NNTB	+38.2	Foster, Clyde	99.9	-0.2
23	2019/03/13	20:40	98.2	2	C	D SPOT	NNTB	+39.0	Miyazaki, Isao	99.9	-1.7
24	2019/03/13	21:01	99.4	2	C	D SPOT	NNTB	+38.4	Kumamori, Teruaki	99.9	-0.5
25	2019/03/16	19:50	98.4	2	C	D SPOT	NNTB	+39.1	Kumamori, Teruaki	99.8	-1.4
26	2019/03/18	19:32	100.0	2	C	D SPOT	NNTZ	+38.8	Wesley, Anthony	99.8	+0.2
27	2019/03/22	03:13	101.6	2	C	D SPOT	NNTB	+38.6	Foster, Clyde	99.7	+1.9
28	2019/03/23	19:28	101.2	2	C	D SPOT	NNTB	+38.8	Wesley, Anthony	99.7	+1.5
29	2019/03/23	20:42	100.5	2	C	D SPOT	NNTB	+38.8	Go, Christopher	99.7	+0.8
30	2019/03/25	21:29	101.6	2	C	D SPOT	NNTB	+38.6	Go, Christopher	99.7	+1.9