| 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 | ||||||||||
If you use these data in a publication, we ask that you please contact us so we can add a link to the list of external MOJAVE publications, and ask that you cite Lister et al., 2018, ApJS, 234, 12 and include the following acknowledgment: "This research has made use of data from the MOJAVE database that is maintained by the MOJAVE team (Lister et al. 2018)"
Important Note: The MOJAVE team, working with the OVRO 40m AGN monitoring team checks and adjusts the flux density scaling of the MOJAVE VLBA data for possible systematics based on near-simultaneous OVRO 40m measurements at 15 GHz. Asterisked entries below denote epochs that have not yet been checked and corrected.
Important Note: The MOJAVE team, working with the OVRO 40m AGN monitoring team checks and adjusts the flux density scaling of the MOJAVE VLBA data for possible systematics based on near-simultaneous OVRO 40m measurements at 15 GHz. Asterisked entries below denote epochs that have not yet been checked and corrected.
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