Common Name: 4C +04.42 MOJAVE 15 GHz [Total intensity movie]   | [Polariz. movie] VLBA 1.4 GHz: University College Cork Program
B1950 Name: 1219+044 2 cm VLBA Image map
J2000 Name: J1222+0413
R.A. and Dec. (J2000): 12h22m22.550s
+4d13'15.776"
AGN Class: LSP NLSY1
Redshift: 0.9665 (2025arXiv250314745D)
Luminosity Distance: 6359 Mpc ; 7.97 pc/mas
Radio Spectrum: Flat
Gamma-ray Association LAT: Y, EGRET: N, TeV: N
Kpc-scale morphology: Two-sided
Jet Speed: Maximum: 13 ± 5 μas/y ; 0.64 ± 0.24 c
Median: N/A ;
based on 2 moving features
Lister et al. 2021, ApJ,923,30
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: | Not available |

Spectral Index 8-15 GHz Map: | 2006_05_24 |


Multifrequency MOJAVE VLBA Data:

Epoch
8.1 GHz
8.4 GHz
12.1 GHz
2006-05-24
uvf  FITS  PNG  PDF 
uvf  FITS  PNG  PDF 
uvf  FITS  PNG  PDF 

VLBA 23 GHz:
Kpc-scale: Kharb, Lister, and Cooper 2010, ApJ 710, 764
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: NLSY1 (Yao 2015), MOJAVE 1.5QC sample

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.
Epoch
(YYYY-MM-DD)
VLBA Code VLBA I
(mJy)
VLBA P
(mJy)
VLBA
P (%)
VLBA
EVPA (deg.)
Stokes I Image
(Nat. weight)
Visibility
Data
Stokes I Radplot Polarization Image
(Nat. weight)
Full
Montage
2025-08-31 * BK255AK
2025-01-06 * BK255AD 1444 3.7 0.3 132 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2024-08-20 * BK255AA 1062 14 1.3 76 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2024-04-07 * BL286BD 1208 25 2.1 89 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2023-08-18 * BL286AY 1423 21 1.5 46 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2023-02-04 * BL286AR 653 3.9 0.6 66 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2022-05-21 BL286AK 573 17 2.9 74 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2021-12-10 BL286AD 1182 38 3.2 56 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2021-10-23 BL286AC 1254 36 2.8 55 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2020-12-24 BL229BL 763 13 1.7 104 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2018-12-16 BL229AT 544 5.7 1.0 33 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2015-11-25 BL193AY 667 24 3.6 75 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2010-10-25 BL149CT 929 6.0 0.6 5 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2010-09-01 BG204B 1093 13 1.2 48 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2009-10-27 BL149CC 1023 4.9 0.5 46 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2008-11-19 BL149BE 1120 24 2.2 47 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2007-06-03 BL149AA 916 11 1.2 56 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2006-05-24 BL137E 1178 < 1.4 < 1.2 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2005-07-24 BL123J 793 4.5 0.6 115 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2005-03-23 BL123D 767 12 1.6 103 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2003-06-15 BL111I 851 6.2 0.7 2 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2002-06-15 BL111B 917 1.5 0.2 175 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
1996-05-02 BE10B 622 no data FITS   PNG   PDF UVF PNG   PDF PNG
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