Common Name: S4 1800+44 MOJAVE 15 GHz [Total intensity movie]   | [Polariz. movie] VLBA 1.4 GHz: University College Cork Program
B1950 Name: 1800+440 2 cm VLBA Image map
J2000 Name: J1801+4404
R.A. and Dec. (J2000): 18h1m32.315s
+44d4'21.900"
AGN Class: LSP HPQ
Redshift: 0.663 (1982MNRAS.200..191W)
Luminosity Distance: 3984 Mpc ; 6.98 pc/mas
Radio Spectrum: Flat
Gamma-ray Association LAT: Y, EGRET: N, TeV: N
Kpc-scale morphology: Two-sided
Jet Speed: Maximum: 444 ± 38 μas/y ; 16.8 ± 1.4 c
Median: 395 ± 28 μas/y ; 14.9 ± 1.0 c
based on 5 moving features
Lister et al. 2021, ApJ,923,30
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_04_28 |

Spectral Index 8-15 GHz Map: | 2006_04_28 |


Multifrequency MOJAVE VLBA Data:

Epoch
8.1 GHz
8.4 GHz
12.1 GHz
2006-04-28
uvf  FITS  PNG  PDF 
uvf  FITS  PNG  PDF 
uvf  FITS  PNG  PDF 

Univ. College Cork VLBA L Band Data:

Epoch
1.35 GHz
1.4 GHz
1.5 GHz
1.7 GHz
2010-03-07
uvf 
uvf 




VLBA 23 GHz: RRIFD Database
Kpc-scale: Reid et al. 1995, AASup, 110,213
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: MOJAVE 1.5 Jy source

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.)
I Image (Nat. Weight) Visibility
Data
Stokes I Radplot Polarization
Image
Full
Montage
2013-08-20 BL178BI 767 18 2.3 123 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2013-05-05 BL178BC 835 14 1.7 101 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-11-21 BL178AT 920 21 2.3 126 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2012-08-03 BL178AN 633 28 4.4 123 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2011-03-05 BL149DD 501 8.3 1.7 5 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2009-12-17 BL149CE 956 20 2.1 135 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2008-08-25 BL149BB 1311 41 3.2 41 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2007-03-28 BL137P 1726 24 1.4 33 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2006-04-28 BL137D 1373 33 2.4 99 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2005-03-05 BL123C 657 21 3.2 117 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2004-12-02 BL111Q 753 17 2.2 102 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2004-08-09 BL111N 1290 17 1.3 120 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2003-03-29 BL111G 1158 13 1.2 48 FITS   PNG   PDF UVF PNG   PDF p:PNG  p:PDF   f:PNG  f:PDF PNG
2001-12-30 BR077H 1049 no data FITS   PNG   PDF UVF PNG   PDF
2000-12-28 BK068F 630 no data FITS   PNG   PDF UVF PNG   PDF
1999-01-02 BG077D 741 no data FITS   PNG   PDF UVF PNG   PDF
1997-03-13 BK048B 1069 no data FITS   PNG   PDF UVF PNG   PDF
1996-05-16 BK037B 1476 no data FITS   PNG   PDF UVF PNG   PDF
1995-04-07 BK016 950 no data FITS   PNG   PDF UVF PNG   PDF
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