Lunar occultation of double stars

Lunar occultation of double stars - Project OLED

OBSERVING PROGRAMME - MARCH 2025

The programme for this month includes targets from the following campaigns:

Double star WDS programme
Gaia DR3 nonsingle star programme

DOUBLE STAR WDS PROGRAMME

The table below shows the occultations of the WDS programmme for MARCH 2025. Please report observations by writing an email to enrique.velasco@uam.es.

For more accurate predictions on these occultations for your position, visit this link and choose "WDS (double stars)" as the "Object catalogue". A summary of these predictions, with detailed information for each observer of the project, can be found here.

Urg.¹	Day²	UTC³	Star (WDS)⁴	RA⁵	DEC⁶	Mags.⁷	Año⁸	# obs⁹	Sep.¹⁰	PA¹¹	Type¹²	Flux¹³	Illum.¹⁴	Def.¹⁵	γ¹⁶	hSun¹⁷	hMoon¹⁸	Map¹⁹	Map²⁰
B	6	18:52:17	J05029+2802	5 2 53.63	+28 2 22.7	10.0/10.3/ 9.4	2016	8	1.4	258	I	0.58/0.42	51.2	927	29	-9	76	mapa	mapa
B	6	20:03:13	J05053+2740	5 5 15.46	+27 39 35.9	10.4/10.4/ 9.6	2016	19	2.0	140	I	0.50/0.50	51.8	915	135	-22	66	mapa	mapa
B	6	22:20:29	J05098+2802A,BC	5 9 45.06	+28 1 50.2	6.0/ 9.1/ 6.0	2017	68	11.3	29	I	0.94/0.06	52.8	899	48	-45	42	mapa	mapa
A	6	22:21:03	J05098+2802BC	5 9 45.44	+28 2 1.6	9.1/ 9.7/ 8.6	2007	42	0.2	99	I	0.63/0.37	52.8	898	47	-45	41	mapa	mapa
B	6	22:41:54	J05101+2733	5 10 3.87	+27 33 23.4	7.0/ 9.3/ 6.9	2015	24	314.6	353	I	0.89/0.11	53.0	810	154	-50	33	mapa	mapa
A	7	01:03:16	J05165+2753	5 16 28.95	+27 52 30.3	10.6/10.6/ 9.8	2008	3	4.9	271	I	0.50/0.50	54.1	882	65	-54	13	mapa	mapa
A	7	21:35:52	J06105+2837	6 10 27.16	+28 36 30.6	10.2/10.2/ 9.4	1930	0	0.1	---	I	0.50/0.50	63.3	583	43	-38	61	mapa	mapa
B	8	22:24:55	J07128+2713AB	7 12 49.08	+27 13 30.2	7.2/ 7.3/ 6.5	2019	439	0.8	304	I	0.51/0.49	73.5	444	69	-45	62	mapa	mapa
B	9	00:40:52	J07171+2641	7 17 3.36	+26 41 23.3	7.0/ 7.7/ 6.5	2016	14	0.2	235	I	0.66/0.34	74.4	473	113	-54	37	mapa	mapa
A	9	20:46:28	J08077+2444	8 7 41.25	+24 44 19.5	9.9/ 9.9/ 9.1	1987	0	0.1	---	I	0.50/0.50	81.6	249	65	-29	74	mapa	mapa
A	9	21:04:50	J08081+2443	8 8 6.09	+24 42 54.7	9.9/ 9.9/ 9.1	1932	0	0.1	---	I	0.50/0.50	81.7	225	61	-32	74	mapa	mapa
A	11	22:08:28	J09529+1534	9 52 56.95	+15 33 34.3	10.1/10.1/ 9.3	1982	0	0.1	---	I	0.50/0.50	94.7	94	104	-42	64	mapa	mapa
B	16	23:06:44	J13324-1240	13 32 24.72	-12 39 47.1	7.6/ 8.6/ 7.2	2015	32	48.1	78	E	0.71/0.29	-93.6	70	337	-47	23	mapa	mapa
B	17	01:14:16	J13347-1313AB	13 34 40.48	-13 12 51.5	6.3/ 7.3/ 5.9	2019	104	0.4	67	E	0.71/0.29	-93.2	106	318	-49	35	mapa	mapa
B	17	02:19:45	J13358-1329	13 35 47.44	-13 28 42.6	8.1/10.5/ 8.0	2018	3	0.1	343	E	0.90/0.10	-93.0	117	311	-43	37	mapa	mapa
B	18	01:21:38	J14194-1831AB	14 19 25.83	-18 31 25.0	7.3/10.7/ 7.3	2015	12	3.6	355	E	0.96/0.04	-87.7	98	239	-46	29	mapa	mapa
B	18	03:22:48	J14220-1848	14 21 57.16	-18 47 51.9	9.2/10.9/ 9.0	2015	6	1.3	238	E	0.82/0.18	-87.1	198	267	-33	31	mapa	mapa
B	19	03:01:03	J15100-2243	15 10 0.22	-22 43 14.8	8.2/10.3/ 8.0	2016	21	2.0	131	E	0.88/0.12	-80.3	155	347	-36	27	mapa	mapa
B	23	04:31:53	J18494-2904	18 49 26.40	-29 4 40.3	9.9/10.2/ 9.3	2016	13	2.1	152	E	0.56/0.44	-43.0	-	236	-20	13	mapa	mapa
B	24	05:14:09	J19483-2640	19 48 19.85	-26 39 31.0	9.4/ 9.7/ 8.8	2016	14	1.7	102	E	0.58/0.42	-32.6	-	288	-12	14	mapa	mapa

¹ Degree of urgency of the observation. A: High. B: Low.
² Day of occultation.
³ UTC of occultation in Madrid (in black), Barcelona (green), La Laguna (red) and Marseille (blue). Note that some events might be visible in some places and not in others.
⁴ ID number of star in WDS (Washington Double Star) catalogue.
⁵ J2000.0 right ascension (hh mm ss.ss).
⁶ J2000.0 declination (dd mm ss.s).
⁷ Magnitude of components and total magnitude.
⁸ Year of last observation.
⁹ Total number of observations.
¹⁰ Last measurement of separation between components, in arcseconds.
¹¹ Last measurement of position angle, in degrees.
¹² Type of occultation. I: ingress. E: egress.
¹³ Fractional change of flux in reference to combined flux. The two values refer to ingress or egress of each component.
¹⁴ % fraction of illuminated area of Moon (positive, waxing Moon; negative, waning Moon).
¹⁵ Distance from contact to Moon terminator, in arcseconds.
¹⁶ Position angle of contact in ° (from N to E).
¹⁷ Height of Sun above horizon in reference location at contact time, in °.
¹⁸ Height of Moon above horizon in reference location at contact time, in °.
¹⁹ Visibility map.
²⁰ Contact map for observers.

For more accurate predictions on these occultations for your position, visit this link and choose "WDS (double stars)" as the "Object catalogue".

GAIA DR3 NONSINGLE STAR PROGRAMME

The observing programme for MARCH 2025 includes a short list of stars from the Gaia DR3 nonsingle star catalogue for which occultation work can confirm duplicity. A summary of these predictions, with detailed information for each observer of the project, can be found here.

General information on the programme can be found in this link.

Day	Gaia DR3 id	PPM/TYC id	mag.	Type			UTC (hh.mmss)
					Tenerife	Madrid	Asturias	Barcelona	Marseille	Chatillon
6	155520731429831040	94060	9.9	I	19.5610	20.4600	---	---	---	---
7	3436493497781220992	95636	9.6	I	23.3435	---	---	---	---	---
8	3433139678079221376	1886-1039-1	9.8	I	---	---	---	---	01.4309	01.3335
8	884025254452754560	1886-1039-1	9.5	I	---	---	---	---	18.4941	18.2419
9	871420350072079872	97371	7.0	I	01.5400	---	---	---	---	---
11	636622214644663296	1407-257-1	9.9	I	00.2716	---	---	---	---	---
12	616443431791326592	126946	7.4	I	01.5014	01.1713	01.0827	01.2025	01.1950	01.0933
14	3800328217601784064	157908	10.0	I	---	---	03.3516	03.4347	03.3018	---
16	3627211554917616896	195969	9.7	E	05.1355	05.1416	05.0537	05.1749	05.1635	05.0557
19	6231444182909587968	263866	9.2	E	01.4849	---	---	---	---	---
20	6235482349824907904	264959	10.0	E	02.0440	---	---	---	---	---
21	6033008932869196928	266082	8.7	E	---	02.2942	---	02.2432	---	---
21	6033032950328939264	266110	9.2	E	02.4236	---	---	---	---	---
21	6032831563565213056	266145	9.2	E	03.4941	---	---	---	---	---
21	6030110345389661312	733017	10.0	E	06.4413	---	---	---	---	---

ACKNOWLEDGEMENTS

Information on the stars in the tables above has been collected with the help of the and web tools.

Last revised 03 Mar 25
E. Velasco
Agrupación Astronómica de Madrid
Universidad Autónoma de Madrid
Spain