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    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_04_28 |

Spectral Index Map: | 2006_04_28 |


Multifrequency MOJAVE VLBA Data:

Epoch
8.1 GHz
8.4 GHz
12.1 GHz
2006-04-28
uvf  
uvf  
uvf  

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 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
2013-08-20 BL178BI 779 18 2.3 122 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2013-05-05 BL178BC 840 15 1.8 104 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2012-11-21 BL178AT 928 20 2.1 126 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2012-08-03 BL178AN 640 27 4.2 122 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2011-03-05 BL149DD 506 8.7 1.7 5 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2009-12-17 BL149CE 964 23 2.4 133 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2008-08-25 BL149BB 1317 43 3.3 41 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2007-03-28 BL137P 1736 20 1.1 30 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2006-04-28 BL137D 1379 39 2.8 101 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2005-03-05 BL123C 656 25 3.8 114 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2004-12-02 BL111Q 760 19 2.4 110 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2004-08-09 BL111N 1300 22 1.7 122 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2003-03-29 BL111G 1166 10 0.9 49 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2001-12-30 BR077H 1044 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
2000-12-28 BK068F 637 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
1999-01-02 BG077D 760 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
1997-03-13 BK048B 1191 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
1996-05-16 BK037B 1480 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
1995-04-07 BK016 969 no data FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS
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