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Observation Summary for Variable Star HR DEL

Total observations:	13,540		Minimum magnitude:	15.100	Maximum magnitude:	3.320
First observation:	JD 2439680.406000	\	8 Jul 1967 21:44:38.400000 UT	Latest observation:	JD 2460418.610000	\	18 Apr 2024 02:38:24.000000 UT

Observation Method	Number of Observations
Visual	11,714
Photographic	6
CCD	1,810
CMOS	10

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Summary by Year and Month

Year	Total	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
2024	7	3	0	2	2	0	0	0	0	0	0	0	0
2023	84	4	0	2	3	3	8	8	9	17	13	14	3
2022	112	6	1	2	3	4	12	11	18	11	27	9	8
2021	99	3	0	2	3	3	5	13	9	21	19	15	6
2020	136	9	0	3	3	9	12	11	18	27	14	19	11
2019	156	2	2	3	2	4	10	15	38	31	19	11	19
2018	97	8	2	2	3	4	11	7	16	13	15	10	6
2017	151	5	1	3	4	10	6	12	20	24	17	29	20
2016	186	3	2	4	5	7	8	16	31	35	23	34	18
2015	167	16	3	2	4	4	15	17	20	40	20	16	10
2014	1,930	10	1	4	3	5	14	1,635	159	23	28	23	25
2013	187	3	0	1	3	5	7	22	30	37	33	24	22
2012	174	10	1	3	1	6	14	8	32	28	14	28	29
2011	136	6	0	3	5	5	2	12	16	26	26	20	15
2010	128	7	0	1	3	5	10	10	27	22	23	13	7
2009	114	1	0	0	0	6	10	14	26	15	13	19	10
2008	119	4	0	0	0	1	9	15	11	22	32	13	12
2007	147	5	0	0	0	0	1	14	33	25	29	22	18
2006	77	3	0	0	0	0	0	6	13	10	17	17	11
2005	77	3	0	0	0	0	0	0	21	16	6	18	13
2004	97	5	0	0	0	1	2	3	18	26	19	11	12
2003	148	4	0	0	0	1	4	22	31	31	25	16	14
2002	126	6	0	0	2	2	4	16	19	26	17	20	14
2001	160	5	0	0	2	8	16	13	27	20	21	26	22
2000	144	5	0	0	0	1	5	18	36	27	18	19	15
1999	189	1	0	1	2	3	17	24	21	28	43	24	25
1998	159	2	0	0	2	7	5	16	45	25	24	22	11
1997	95	2	0	1	4	8	3	13	16	17	20	6	5
1996	130	1	0	1	1	5	7	25	25	20	17	18	10
1995	166	5	0	2	1	4	7	29	46	21	27	16	8
1994	124	2	0	2	0	1	7	23	23	19	22	8	17
1993	129	0	0	3	0	2	5	15	26	25	22	14	17
1992	121	0	0	0	1	3	5	19	22	18	25	15	13
1991	172	8	0	1	2	3	8	15	37	27	30	22	19
1990	189	3	1	2	1	7	5	47	27	30	35	16	15
1989	255	6	0	2	2	9	27	37	54	31	39	35	13
1988	283	9	5	5	6	11	17	35	39	52	45	40	19
1987	357	16	8	10	10	15	28	36	55	54	56	47	22
1986	358	17	6	10	7	16	35	39	29	54	63	48	34
1985	232	9	3	9	6	11	21	29	30	29	39	32	14
1984	255	9	1	3	6	5	23	40	30	42	46	25	25
1983	216	6	1	4	4	4	16	23	33	33	41	28	23
1982	201	2	0	9	4	9	12	27	30	39	23	23	23
1981	176	3	2	3	5	11	13	22	31	30	28	15	13
1980	151	5	1	2	7	12	6	8	20	24	28	20	18
1979	116	7	1	1	3	5	8	6	22	23	18	14	8
1978	84	3	0	1	1	5	5	4	17	16	13	13	6
1977	63	2	0	1	2	2	1	9	9	15	10	7	5
1976	127	7	1	1	5	6	10	23	34	10	13	11	6
1975	240	14	0	2	2	8	22	17	50	48	41	16	20
1974	216	2	4	1	0	13	13	31	35	32	25	39	21
1973	197	6	0	12	8	6	22	21	26	25	22	31	18
1972	203	2	0	4	6	15	16	29	28	36	24	30	13
1971	275	7	1	2	15	27	13	43	27	45	49	32	14
1970	357	16	9	13	19	14	33	43	56	48	38	36	32
1969	566	27	12	14	45	22	100	77	65	58	62	55	29
1968	1,004	65	26	81	70	92	116	125	137	92	92	64	44
1967	1,175	0	0	0	0	0	0	74	145	281	236	214	225