VLA calibrator information for 2202+4216

This page summarizes the information for 2202+4216 as found in the original VLA calibrator list and, if found there, a link to search the NRAO VLA Archive Survey (NVAS) for calibrator data before 2010. Furthermore, a table with the most recent approximate flux densities, starting from 2017 as mined from the VLA CASA pipeline is presented.

If shown at the top, we have recovered the original, pre-WIDAR ANTSOL flux density solutions from the period roughly 2000-2007; symbols as explained next.
The mined data are plotted (gray, on the left hand side) as function of (log) frequency on the top and as function of time on the bottom. The frequency band symbols in the bottom panel follow the symbols as outlined in the top panel:

4-band  (~75 MHz) horizontal stripe       X-band (~10.0 GHz) cross
P-band (~350 MHz) open triangle        U/Ku-band (~15.0 GHz) filled square
L-band (~1.5 GHz) VLA-Y shape             K-band (~22.2 GHz) open circle
S-band (~3.0 GHz) filled triangle      A/Ka-band (~33.2 GHz) 6-pointed star
C-band (~6.0 GHz) open square             Q-band (~45.0 GHz) filled circle
Assume a 10% flux density error on each point, up to 30% for the higher frequency data points. The dashed lines in the frequency plot indicate the approximate spectral index in the frequency band (tied to the measured flux density).
Depending on the spectral behavior, different receiver observing bands (as indicated with the log-frequency axis) may have very different typical flux densities. Note that there can be significant flux density changes for different array configurations, which start date is indicated at the top of the time-line figure. Calendar years are separated by vertical dotted lines.
If shown, a curve depicts a fit to the (unweighted) average data for each band (if there are more than two bands with measured flux densities). The fit equation is listed at the top where the x-coordinate represents the base-10 log of the frequency (GHz) and the y-coordinate represents the base-10 log of the flux density (mJy/bm). The fit may use more data than shown and is using data with different time stamps, which means typically different flux densitities in a single band for genuine variable sources (and/or observed in different array configurations).
Depending on the variability of the source, array configuration and the quality of the data, this fit may, or may not, be representative for the data!

(Click on the figure for a larger view in a new tab/window)

 Original (outdated) VLA calibrator list information: 
 IAU NAME EQUINOX  PC RA(hh,mm,ss)    DEC(ddd,mm,ss)   POS.REF ALT.NAME
 ===================================================================
 2202+422   J2000  A 22h02m43.291377s  42d16'39.979940"  Aug01  BLLAC  
 2200+420   B1950  A 22h00m39.362500s  42d02'08.591000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P P P P       6.07
   6cm    C  P P P P       5.40
 3.7cm    X  P P P P       3.95
   2cm    U  P P P P       3.50
 0.7cm    Q  S S S S       2.5

Default NVAS search around this position (in new tab/window)

WARNING: multiple positions found, using first one 330.6803807 +42.2777722 330.6803808 +42.2777722 Results from CASA pipeline flux density mining:
Observing date (UT)Flux density (Jy/bm)Source name used
L-band data ("VLA Y-arm" symbols)
201705291.854J2202+4216
201707152.068J2202+4216
201707272.098J2202+4216
201707312.072J2202+4216
201708012.097J2202+4216
201708022.087J2202+4216
201708211.981J2202+4216
201712301.997J2202+4216
201907291.522J2202+4216
S-band data (filled triangles)
201705292.070J2202+4216
201708212.160J2202+4216
C-band data (open squares)
201708212.433J2202+4216
201711092.161J2202+4216
202206133.391J2202+4216
X-band data (X-crosses)
201802101.479J2202+4216
201903211.776J2202+4216
201903231.701J2202+4216
202208236.117J2202+4216
A-band data (6-pointed stars)
202110205.219J2202+4216
201909101.6842202+422