OK 492 multiwavelength SED

Also known as 2FGL J0957.7+4735, 3FGL J0957.4+4728, 5BZQ J0958+4725, BZQ J0958+4725, CRATES J095819+472514, ROXA J095819.6+472507.7, S40955+476, WMAP5 J1657+4754, WMAP98.

• Class: FSRQ
• Redshift: z = 1.882
• Position (ICRS): RA 149.58197°, Dec 47.41885°
• Data: 2,339 points (16 upper limits) from 34 catalogues
• Dated data: 2008–2024 (MJD 54470–60452)
• Undated catalogue values: 92
• Frequency range of detections: log ν = 8.2–25.4 [Hz] (radio, microwave, infrared, optical, ultraviolet, X-ray, γ-ray)
• Swift measurements analysed by MMDC: 66 UVOT and 16 XRT
• Largest catalogues (points): ZTF (1,881), ASAS-SN (145), WISEME (78), PanSTARRS-LC (69), MMDCOUV (33)

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=149.58197, dec=47.41885, name="OK 492")

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

Other FSRQs

• 4C +40.24
• S4 0917+44
• 4C +55.17
• S4 1030+41
• 4C +38.28
• OL 318

How to cite

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