Common Name: 4C +21.55 MOJAVE 15 GHz [Total intensity movie]   | [Polariz. movie] VLBA 1.4 GHz:
B1950 Name: 2031+216 2 cm VLBA Image map
J2000 Name: J2033+2146
R.A. and Dec. (J2000): 20h33m32.031s
+21d46'22.410"
AGN Class: LSP Quasar
Redshift: 0.1735 (Healey et al. 2008, ApJS 175, 97)
Luminosity Distance: 829 Mpc ; 2.92 pc/mas
Radio Spectrum: Steep
Gamma-ray Association LAT: N, EGRET: N, TeV: N
Kpc-scale morphology: Two-sided
Jet Speed: Maximum: Unknown ;
Median: Unknown ;
Separation Versus Time Plot: Not available   
Stacked epoch 15 GHz VLBA images:
Uniform weight: [PS]   [GIF]
Natural weight: [PS]   [GIF]
Circular Beam : [PS]   [GIF]
Tapered Beam: [PS]   [GIF]

Rotation Measure Map: | Not available |

Spectral Index Map: | Not available |


VLBA 23 GHz:
Kpc-scale: VLA Sky Survey
23 GHz Image
Kpc Image

Fermi LAT and 15 GHz VLBA Light Curves

Fermi LAT and 15 GHz VLBA Light Curves
VLBA 43 GHz:
Multiepoch Radio Spectrum:
43 GHz Image
Radio Spectrum
Comments: Robopol control sample; large classical triple in VLASS

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
2021-07-04 * BL273L
2020-11-21 * BL273H 308 0.6 0.2 3 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2020-08-01 * BL229BH 312 < 0.3 < 1.0 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2020-05-08 * BL273E1 304 0.9 0.3 136 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2020-04-09 * BL273E 296 1.3 0.4 38 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2019-12-31 * BL229BD 275 2.9 1.1 68 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2019-10-11 * BL273B 317 < 0.3 < 0.9 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2019-06-29 BL229AY 335 0.5 0.1 162 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2018-12-16 BL229AT 298 1.3 0.4 135 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2018-05-31 BL229AO 288 1.6 0.6 28 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2017-07-30 BL229AJ 309 0.7 0.2 131 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
2017-05-25 BL229AH 291 0.8 0.3 12 FITS   PNG   PS FITS   PNG   PS PNG   PS uvf   PNG   PS PNG   PS
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