VLA calibrator information for 2212+0152

This page summarizes the information for 2212+0152 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
 ===================================================================
 2212+018   J2000  C 22h12m37.9770s    01d52'51.151"
 2210+016   B1950  C 22h10m05.1330s    01d37'59.500"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P P P P       2.65
   6cm    C  S P P P       1.10                      300
 3.7cm    X  S P P P       0.60                      300
 0.7cm    Q  W W W W       0.14

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

Results from CASA pipeline flux density mining:
Observing date (UT)Flux density (Jy/bm)Source name used
L-band data ("VLA Y-arm" symbols)
201706302.806J2212+0152
201804202.714J2212+0152
201805302.690J2212+0152
201909122.697J2212+0152
S-band data (filled triangles)
201706302.143J2212+0152
201709101.647J2212+0152
201801051.677J2212+0152
201909021.555J2212+0152
C-band data (open squares)
201711200.889J2212+0152
201711270.891J2212+0152
201711300.898J2212+0152
201712040.902J2212+0152
201712060.884J2212+0152
201712060.889J2212+0152
201712110.893J2212+0152
201712220.889J2212+0152
201712230.891J2212+0152
201712260.887J2212+0152
201712280.902J2212+0152
201712290.879J2212+0152
201712290.891J2212+0152
201712300.892J2212+0152
201712300.889J2212+0152
201712310.896J2212+0152
201801010.892J2212+0152
201801030.874J2212+0152
201801030.884J2212+0152
201801050.890J2212+0152
201801060.901J2212+0152
201801060.890J2212+0152
201908140.899J2212+0152
X-band data (X-crosses)
201908110.542J2212+0152
201909300.513J2212+0152
202006010.604J2212+0152