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: Natural weight:   PNG PDF FITS Circular Beam:   PNG PDF FITS Tapered Beam:   PNG PDF FITS 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 |
Epoch (YYYY-MM-DD) | VLBA Code | VLBA I (mJy) |
VLBA P (mJy) |
VLBA P (%) |
VLBA EVPA (deg.) |
I Image (Nat. Weight) | Visibility Data |
Stokes I Radplot | Polarization Image |
Full Montage |
2012-09-08 | BL186 | 2867 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2012-01-14 | BL178AF | 2371 | 104 | 4.4 | 125 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2011-02-20 | BL149DB | 1688 | 33 | 2.0 | 63 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2010-01-16 | BL149CG | 3504 | 132 | 3.8 | 22 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2008-11-26 | BL149BF | 3825 | 190 | 5.0 | 104 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2007-09-06 | BL149AG | 2163 | 56 | 2.6 | 94 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2007-04-30 | BK134C | 2064 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2006-03-09 | BL137B | 1882 | 34 | 1.8 | 92 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2002-11-02 | BC119A | 1381 | 27 | 1.9 | 51 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 2002-02-18 | BR077K | 1228 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2001-12-30 | BR077H | 1324 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 2000-12-28 | BK068F | 971 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1997-06-01 | BG064 | 746 | 28 | 3.7 | 170 | FITS PNG PDF | UVF | PNG PDF | p:PNG p:PDF f:PNG f:PDF | PNG | 1996-10-27 | BK037D | 600 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1996-07-10 | BK037C | 616 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1996-05-16 | BK037B | 693 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1995-01-20 | BP14 | 1103 | no data | FITS PNG PDF | UVF | PNG PDF | PNG | 1994-08-31 | BZ004 | 851 | no data | FITS PNG PDF | UVF | PNG PDF | PNG |
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