VLA calibrator information for 2246-1206

This page summarizes the information for 2246-1206 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
 ===================================================================
 2246-121   J2000  A 22h46m18.231976s -12d06'51.277340"  Aug01         
 2243-123   B1950  A 22h43m39.792800s -12d22'40.293000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P P P P       2.40
   6cm    C  P P P P       2.80
 3.7cm    X  P P P P       2.40
   2cm    U  P P P P       2.60
 0.7cm    Q  S S S S       1.6

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)
201901191.714J2246-1206
201909111.722J2246-1206
201909151.999J2246-1206
S-band data (filled triangles)
201708091.929J2246-1206
201711011.953J2246-1206
201711011.965J2246-1206
201711131.990J2246-1206
201711221.873J2246-1206
201803041.468J2246-1206
201812022.185J2246-1206
201904082.209J2246-1206
201904112.126J2246-1206
201905032.291J2246-1206
201905062.295J2246-1206
201905072.276J2246-1206
201905092.248J2246-1206
201905152.205J2246-1206
201905202.235J2246-1206
201905232.216J2246-1206
201905292.160J2246-1206
201905312.184J2246-1206
201906042.173J2246-1206
201906062.203J2246-1206
201906082.148J2246-1206
201906122.187J2246-1206
201906172.176J2246-1206
201906192.176J2246-1206
201906192.159J2246-1206
201906192.123J2246-1206
201906192.177J2246-1206
201906212.126J2246-1206
201906222.175J2246-1206
201906272.153J2246-1206
201906272.099J2246-1206
201906272.096J2246-1206
201906272.081J2246-1206
201906282.137J2246-1206
201906282.084J2246-1206
201906282.185J2246-1206
201906292.246J2246-1206
201907112.228J2246-1206
201907112.217J2246-1206
201907112.190J2246-1206
201907112.149J2246-1206
201907112.166J2246-1206
201907112.180J2246-1206
201907112.165J2246-1206
201907112.176J2246-1206
201907122.131J2246-1206
201907122.088J2246-1206
201907122.092J2246-1206
201907122.183J2246-1206
201907132.249J2246-1206
201907142.262J2246-1206
201907142.148J2246-1206
201907152.249J2246-1206
201907162.258J2246-1206
201907172.235J2246-1206
201907172.217J2246-1206
201907172.147J2246-1206
201907192.202J2246-1206
201907192.188J2246-1206
201907192.144J2246-1206
201907202.226J2246-1206
201907212.161J2246-1206
201907222.221J2246-1206
201907222.137J2246-1206
201907232.220J2246-1206
201907242.217J2246-1206
202009132.069J2246-1206
202111171.912J2246-1206
202111201.881J2246-1206
202201301.853J2246-1206
202202041.868J2246-1206
202202151.824J2246-1206
C-band data (open squares)
201908032.019PhJ2246-1206
201908031.976PhJ2246-1206
201908042.014PhJ2246-1206
202206281.530J2246-1206
X-band data (X-crosses)
201802252.230J2246-1206
201802252.235J2246-1206
202006011.753J2246-1206
U-band data (filled squares)
201709052.097J2246-1206
201709062.152J2246-1206