Common Name: | 4C +69.21 | MOJAVE 15 GHz [Total intensity movie]   | [Polariz. movie] | VLBA 1.4 GHz: BG246 |
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B1950 Name: | 1642+690 | ![]() |
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J2000 Name: | J1642+6856 | ||||||||||
R.A. and Dec. (J2000): | 16h42m7.849s +68d56'39.756" |
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AGN Class: | LSP HPQ | ||||||||||
Redshift: | 0.751 (Lawrence et al. 1986, AJ 91, 494) | Luminosity Distance: | 4646 Mpc ; 7.35 pc/mas | ||||||||
Radio Spectrum: | Flat | ||||||||||
Gamma-ray Association | LAT: , EGRET: N, TeV: N | ||||||||||
Kpc-scale morphology: | Two-sided | ||||||||||
Jet Speed: | Maximum: 346 ± 6 μas/y ; 14.54 ± 0.26 c Median: N/A ; based on 5 moving features Lister et al. 2019, ApJ,874,43 |
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Separation Versus Time Plot: | PNG PDF | ||||||||||
Stacked 15 GHz Stokes I VLBA images: Uniform weight:   PNG PDF Natural weight:   PNG PDF Circular Beam:   PNG PDF Tapered Beam:   PNG PDF Stacking for 1994-2015:   FITS Stacked 15 GHz Polarization VLBA images: Method I:   Cumulative GIF, pol PNG, I FITS, P FITS, m FITS, EVPA FITS Method II:   std EVPA PNG, FITS Rotation Measure 8-15 GHz Map: | 2006_03_09 | Spectral Index 8-15 GHz Map: | 2006_03_09 | Multifrequency MOJAVE VLBA Data:
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VLBA 23 GHz: |
Kpc-scale: O'Dea, Barvainis, and Challis 1988, AJ, 96, 435 | |||||||||
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Fermi LAT and 15 GHz VLBA Light Curves![]() |
VLBA 43 GHz: Cheng et al. 2020 |
Multiepoch Radio Spectrum: |
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Comments: | Promoted 1.5 Jy source; VCV2001 list as galaxy w/ V = 20.5 but Lawrence et al. 1996 find broad emission lines; Arsioli 2018 claims LAT detection |
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