Common Name: 4C +69.21 MOJAVE 15 GHz [Total intensity movie]   | [Polariz. movie] VLBA 1.4 GHz: BG246
B1950 Name: 1642+690 2 cm VLBA Image map
J2000 Name: J1642+6856
R.A. and Dec. (J2000): 16h42m7.849s
+68d56'39.756"
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: Y, 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
Separation Versus Time Plot: PNG    PS
Stacked epoch 15 GHz VLBA images:
Uniform weight: [PS]   [GIF]
Natural weight: [PS]   [GIF]
Circular Beam : [PS]   [GIF]
Tapered Beam: [PS]   [GIF]
Pushkarev et al. 2017 :   FITS

Rotation Measure Map: | 2006_03_09 |

Spectral Index Map: | 2006_03_09 |


Multifrequency MOJAVE VLBA Data:

Epoch
8.1 GHz
8.4 GHz
12.1 GHz
2006-03-09
uvf  
uvf  
uvf  

VLBA 23 GHz:
Kpc-scale: O'Dea, Barvainis, and Challis 1988, AJ, 96, 435
23 GHz Image
Kpc Image

Fermi LAT and 15 GHz VLBA Light Curves

Fermi LAT and 15 GHz VLBA Light Curves
VLBA 43 GHz: Cheng et al. 2020
Multiepoch Radio Spectrum:
43 GHz Image
Radio Spectrum
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 group, has discovered a systematic error in the flux densities of all VLBA 15 GHz observations taking place after a date that lies between 2019 April 16 and 2019 May 16. All observations after that date have correlated flux densities that are between 10% and 20% too low. The MOJAVE team and NRAO are currently investigating the issue.

Asterisked entries below denote epochs that have not yet been corrected for the VLBA flux density scaling problem.
Epoch
(Y-M-D)
VLBA Code VLBA I
(mJy)
VLBA P
(mJy)
VLBA
P (%)
VLBA
EVPA (deg.)
I Image (Nat. Weight) Tapered I Image Tapered I Image (Widefield) Visibility
Data
Stokes I Radplot Pol.
Image
2012-09-08 BL186 2874 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
2012-01-14 BL178AF 2385 100 4.2 124 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2011-02-20 BL149DB 1712 39 2.3 63 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2010-01-16 BL149CG 3519 127 3.6 24 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2008-11-26 BL149BF 3838 184 4.8 103 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2007-09-06 BL149AG 2179 60 2.7 93 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2007-04-30 BK134C 2105 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
2006-03-09 BL137B 1928 48 2.5 89 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2002-11-02 BC119A 1414 30 2.1 54 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
2002-02-18 BR077K 1253 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
2001-12-30 BR077H 1342 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
2000-12-28 BK068F 1001 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
1997-06-01 BG064 774 21 2.7 162 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
1996-10-27 BK037D 624 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
1996-07-10 BK037C 672 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
1996-05-16 BK037B 722 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
1995-01-20 BP14 1165 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
1994-08-31 BZ004 899 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
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