VLA calibrator information for 0920+4441

This page summarizes the information for 0920+4441 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
 ===================================================================
 0920+446   J2000  A 09h20m58.458480s  44d41'53.985020"  Aug01         
 0917+449   B1950  A 09h17m41.919200s  44d54'39.625000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  S S X X       0.70           20
   6cm    C  P P P P       1.00
 3.7cm    X  P P P P       1.18
   2cm    U  P P P P       1.50
 0.7cm    Q  S S S S       0.9

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)
201907261.066J0920+4441
201910041.105J0920+4441
202201271.065J0920+4441
S-band data (filled triangles)
201908091.147J0920+4441
201909191.204J0920+4441
201910041.207J0920+4441
C-band data (open squares)
201711121.447J0920+4441
201712191.410J0920+4441
201712221.391J0920+4441
201712301.497J0920+4441
201801031.435J0920+4441
201801081.400J0920+4441
201801181.425J0920+4441
201801251.439J0920+4441
201801261.430J0920+4441
201801291.435J0920+4441
201802151.399J0920+4441
201803221.491J0920+4441
201908091.314J0920+4441
201908131.356J0920+4441
202101191.374J0920+4441
202206281.378J0920+4441
X-band data (X-crosses)
201710292.014J0920+4441
201710312.014J0920+4441
201711022.007J0920+4441
201711032.006J0920+4441
201711041.790J0920+4441
201711042.045J0920+4441
201711052.005J0920+4441
201711062.014J0920+4441
201711072.186J0920+4441
201711081.990J0920+4441
201711092.187J0920+4441
201711102.183J0920+4441
201711111.804J0920+4441
201711112.004J0920+4441
201711121.797J0920+4441
201711121.999J0920+4441
201711131.774J0920+4441
201711141.781J0920+4441
201711151.786J0920+4441
201711161.799J0920+4441
201711171.773J0920+4441
201711181.831J0920+4441
201711191.841J0920+4441
201711201.847J0920+4441
201711211.787J0920+4441
201711221.819J0920+4441
201711241.801J0920+4441
201711251.820J0920+4441
201711261.816J0920+4441
201711271.820J0920+4441
201711281.810J0920+4441
201711292.038J0920+4441
201711301.863J0920+4441
201712011.893J0920+4441
201712021.846J0920+4441
201712031.831J0920+4441
201712041.813J0920+4441
201712051.831J0920+4441
201712061.842J0920+4441
201712071.857J0920+4441
201712081.867J0920+4441
201712091.852J0920+4441
201712101.855J0920+4441
201712111.845J0920+4441
201712121.852J0920+4441
201712131.852J0920+4441
201712141.840J0920+4441
201712152.101J0920+4441
201712161.849J0920+4441
201712161.854J0920+4441
201712171.826J0920+4441
201712181.843J0920+4441
201712191.857J0920+4441
201712201.842J0920+4441
201712211.842J0920+4441
201712221.852J0920+4441
201712231.850J0920+4441
201712241.870J0920+4441
201712261.858J0920+4441
201712271.851J0920+4441
201712281.884J0920+4441
201712292.127J0920+4441
201712301.860J0920+4441
201712311.844J0920+4441
201801011.868J0920+4441
201801021.852J0920+4441
201801031.865J0920+4441
201801041.884J0920+4441
201801051.881J0920+4441
201801062.078J0920+4441
201801071.820J0920+4441
201801081.866J0920+4441
201801092.205J0920+4441
201801102.051J0920+4441
201801112.094J0920+4441
201801121.899J0920+4441
201801132.126J0920+4441
201801141.894J0920+4441
201801151.896J0920+4441
201801161.910J0920+4441
201801171.877J0920+4441
201801181.885J0920+4441
201801191.887J0920+4441
201801202.276J0920+4441
201801212.139J0920+4441
201801221.897J0920+4441
201801231.890J0920+4441
201801242.105J0920+4441
201801251.892J0920+4441
201801261.911J0920+4441
201801271.891J0920+4441
201801281.915J0920+4441
201803221.921J0920+4441
201902271.632J0920+4441
201903021.629J0920+4441
201903051.619J0920+4441
201903081.607J0920+4441
201903111.627J0920+4441
201903141.592J0920+4441
201903171.631J0920+4441
201903201.635J0920+4441
201903231.582J0920+4441
201903261.621J0920+4441
201903291.540J0920+4441
201904011.609J0920+4441
201904041.584J0920+4441
201904071.588J0920+4441
201904101.517J0920+4441
201904131.609J0920+4441
201904151.508J0920+4441
201904191.586J0920+4441
201904221.594J0920+4441
201904251.521J0920+4441
201904271.520J0920+4441
201904301.544J0920+4441
201905041.566J0920+4441
201905061.488J0920+4441
201905091.519J0920+4441
201905121.480J0920+4441
201905151.552J0920+4441
201905181.511J0920+4441
201905211.302J0920+4441
201905241.490J0920+4441
201905281.532J0920+4441
201905311.525J0920+4441
201906021.499J0920+4441
201906061.516J0920+4441
201906081.492J0920+4441
201906111.506J0920+4441
201906141.473J0920+4441
201906171.498J0920+4441
201906201.485J0920+4441
201906231.490J0920+4441
201906261.538J0920+4441
201907021.466J0920+4441
201907051.489J0920+4441
201907121.448J0920+4441
201907201.456J0920+4441
201907231.447J0920+4441
201907261.417J0920+4441
201908021.365J0920+4441
201908061.362J0920+4441
201908091.397J0920+4441
201908161.386J0920+4441
201908201.321J0920+4441
201908231.339J0920+4441
201908271.357J0920+4441
201909191.535J0920+4441
201909261.345J0920+4441
201909291.335J0920+4441
201910101.331J0920+4441
201910111.354J0920+4441
201910121.366J0920+4441
201910131.358J0920+4441
201910141.384J0920+4441
201910171.339J0920+4441
202103271.740J0920+4441
202104221.740J0920+4441
202203051.834J0920+4441
202208131.635J0920+4441
U-band data (filled squares)
201706172.335J0920+4441
201909191.791J0920+4441
202101111.969J0920+4441
202204212.082J0920+4441
K-band data (open circles)
202106221.989J0920+4441
Q-band data (filled circles)
201706172.843J0920+4441