The third realization of the International Celestial Reference Frame by very long baseline interferometry

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Table 10.

Coordinates at epoch 2015.0 for the 4536 sources included in the S/X band frame.

Source identification		Cat. ^(c)	hfill Right ascension	Declination	Coordinate uncertainty		Correl. ^(d)	Epoch of sessions ^(e)			Observations ^(f)
ICRF designation ^(a)	IERS name ^(b)		(h m s)	(° ′ ″)	(s)	(″)		Mean	First	Last	N_ses	N_del	N_rat
ICRF J000020.3−322101	2357−326	V	00 00 20.39997606	−32 21 01.2337415	0.00000804	0.0002624	−0.0602	56559.8	52306.7	57776.0	4	237	0
ICRF J000027.0+030715	2357+028		00 00 27.02251377	03 07 15.6463606	0.00005931	0.0003421	−0.0119	57974.7	57974.7	57974.7	1	28	0
ICRF J000053.0+405401	2358+406	V	00 00 53.08106320	40 54 01.8096518	0.00001504	0.0002670	−0.1654	56460.2	50242.8	57809.9	3	152	0
ICRF J000105.3−155107	2358−161	V	00 01 05.32873479	−15 51 07.0752302	0.00000702	0.0002261	−0.2106	56338.4	50632.3	58137.6	4	316	0
ICRF J000107.0+605122	2358+605	V	00 01 07.09981547	60 51 22.7980875	0.00003378	0.0001948	0.1619	57160.2	52306.7	57836.8	3	172	0
ICRF J000108.6+191433	2358+189		00 01 08.62156616	19 14 33.8017136	0.00000260	0.0000472	-0.0314	55771.9	50085.5	58205.8	168	3584	0

Notes. The coordinates reported in the table may be propagated at other epochs using Eqs. (6) and (7). The content printed here corresponds to the entries for the first six sources. The table in its entirety is available in electronic form at the CDS.

^(a)

The ICRF designations were derived from the source coordinates with the format ICRF JHHMMSS.s+DDMMSS or ICRF JHHMMSS.s−DDMMSS, according to the original ICRF prescriptions.

^(b)

The complete format for the IERS names, constructed from previous B1950.0 coordinates, includes acronym and epoch and is IERS BHHMM+DDd or IERS BHHMM−DDd.

^(c)

The ICRF3 defining sources are identified with a “D” in this column. Additionally, the sources observed solely with the VLBA are marked with a “V”.

^(d)

The value given in this column indicates the correlation coefficient between the estimated right ascension and declination coordinates.

^(e)

The values given in these three columns are expressed as Modified Julian Date (MJD), i.e., JD − 2 400 000.5.

^(f)

The three columns indicate the number of sessions in which the source was observed (N_ses) and the number of delay and delay rate observations used to estimate its coordinates (N_del and N_rat).

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