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: , 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: [PDF]   [GIF]
Natural weight: [PDF]   [GIF]
Circular Beam : [PDF]   [GIF]
Tapered Beam: [PDF]   [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, 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. Observations after that date have correlated flux densities that are between 10% and 20% too low. We have adjusted the flux density scaling of the MOJAVE VLBA data up to 2022 Jan 3 based on near-simultaneous OVRO 40m measurements at 15 GHz.

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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