PKS 0338-214 multiwavelength SED

Also known as 2FGL J0340.6-2113, 3FGL J0340.5-2119, 5BZB J0340-2119, BZB J0340-2119, CRATES J034035-211931, PKS B0338-214, TXS 0338-214, WMAP5 J0340-2119.

• Class: BL Lac
• Redshift: z = 0.223
• Position (ICRS): RA 55.14837°, Dec −21.32533°
• Data: 2,974 points (6 upper limits) from 37 catalogues
• Dated data: 2008–2025 (MJD 54791–60968)
• Undated catalogue values: 236
• Frequency range of detections: log ν = 7.9–25.9 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 18 UVOT and 6 XRT
• Largest catalogues (points): ASAS-SN (1,131), ZTF (688), NEOWISE (646), WISEME (118), PACO (102)

Get the data

• The SED as CSV from the MMDC SED API (docs.mmdc.am).
• In Python, with astro-mmdc:

  from astro_mmdc import MMDC
  sed = MMDC().sed.get(ra=55.14837, dec=-21.32533, name="PKS 0338-214")

• The interactive SED plot, with time filtering and modeling (needs JavaScript).

Other BL Lac objects

• PKS 0336-177
• PKS 0301-243
• 1ES 0347-121
• PKS 0302-16
• RBS 0589
• PKS 0426-380

How to cite

Sahakyan, N., Vardanyan, V., Giommi, P., et al. 2024, AJ, 168, 289, doi:10.3847/1538-3881/ad8231 (arXiv:2410.01207).