CRF-K-2025 Catalog
Generated 2026 May 05 at USNO (Gordon et al., AJ, 2026)
The catalog text file can be downloaded from: CRF-K-2025a.table.txt
The AJ paper can be accessed at: arXiv:2605.27629
Embedded Files
NEW K-BAND CATALOG: CRF-K-2025 published!
Catalog Column Descriptions:
ICRF name.
IERS name.
IVS name.
'Y' indicates the source was in ICRF3-K, 'D' indicates it is an ICRF3 defining source.
J2000 Right Ascension.
J2000 Declination.
RA scaled uncertainty times cosine(delta) (mas).
Declination scaled uncertainty (mas).
Correlation between RA and declination.
Mean MJD.
Total estimated K band flux.
Unresolved K band flux (as seen on the longest baselines).
Type of object.
AB = blazar, AL = BL Lac object, AQ = quasar, AR = LINER-type AGN, AS = Seyfert galaxy, A1 = Seyfert 1 galaxy,
A2 = Seyfert 2 galaxy, G = radio galaxy, I = IR source, R = radio source, V = visual sourceRedshift.
Gaia G magnitude.
Number of K band VLBI sessions the source has been observed in.
Total number of K band observations.
Note: type, redshift and magnitudes were taken from the OCARS catalogs at http://www.gaoran.ru/english/as/ac/vlbi/ocars.txt
Malkin, Z., 2018, ApJS, 239:20, A new version of the OCARS catalog of Optical Characteristics of Astrometric Radio Sources. https://doi.org/10.3847/1538-4365/aae777
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