VLA calibrator information for 2355+4950

This page summarizes the information for 2355+4950 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
 ===================================================================
 2355+498   J2000  B 23h55m09.458169s  49d50'08.340000"  Aug01         
 2352+495   B1950  B 23h52m37.783500s  49d33'26.799000"
 -----------------------------------------------------
 BAND        A B C D    FLUX(Jy)    UVMIN(kL)  UVMAX(kL)
 =====================================================
  20cm    L  P P P P       2.36
   6cm    C  P P P P       1.60
 3.7cm    X  P P P P       1.00
   2cm    U  S S S S       0.90
 0.7cm    Q  W W W W       0.28

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)
201706192.206J2355+4950
201710121.043J2355+4950
201711091.514J2355+4950
201711171.044J2355+4950
201901212.042J2355+4950
201902081.962J2355+4950
201907262.439J2355+4950
201907262.407J2355+4950
201907263.455J2355+4950
201907272.440J2355+4950
201907272.428J2355+4950
201907282.438J2355+4950
201907292.491J2355+4950
201907292.507J2355+4950
201907312.451J2355+4950
201908222.450J2355+4950
201908222.452J2355+4950
201908242.419J2355+4950
201908252.425J2355+4950
201908292.354J2355+4950
201909112.292J2355+4950
201910012.320J2355+4950
201910102.361J2355+4950
201910122.394J2355+4950
201910152.390J2355+4950
201910162.450J2355+4950
201910162.287J2355+4950
201910172.483J2355+4950
201910192.445J2355+4950
202104232.305J2355+4950
202107172.352J2355+4950
202206182.127J2355+4950
202206182.106J2355+4950
202206192.139J2355+4950
202206202.136J2355+4950
202210142.409J2355+4950
202210182.410J2355+4950
202210182.421J2355+4950
202301242.211J2355+4950
202303042.117J2355+4950
202303282.205J2355+4950
202304092.226J2355+4950
202304112.215J2355+4950
202304162.209J2355+4950
202304182.215J2355+4950
202304212.184J2355+4950
202304282.182J2355+4950
202305052.150J2355+4950
202305062.147J2355+4950
202305072.138J2355+4950
202305162.152J2355+4950
S-band data (filled triangles)
201707211.692J2355+4950
201708091.701J2355+4950
201709011.735J2355+4950
201711181.678J2355+4950
201811181.677J2355+4950
201811201.660J2355+4950
201811201.659J2355+4950
201811261.643J2355+4950
201811271.641J2355+4950
201811301.647J2355+4950
201812011.650J2355+4950
201812071.624J2355+4950
201812091.621J2355+4950
201812111.623J2355+4950
201812141.627J2355+4950
201901111.582J2355+4950
201901181.617J2355+4950
201901311.578J2355+4950
201903051.744J2355+4950
201903123.600J2355+4950
201903221.746J2355+4950
201903231.761J2355+4950
201903241.768J2355+4950
201903291.759J2355+4950
201903311.686J2355+4950
201903311.697J2355+4950
201904041.723J2355+4950
201904051.704J2355+4950
201904051.701J2355+4950
201904071.723J2355+4950
201904091.700J2355+4950
201904101.676J2355+4950
201904111.698J2355+4950
201904111.711J2355+4950
201904121.710J2355+4950
201904131.718J2355+4950
201904131.730J2355+4950
201904141.768J2355+4950
201904141.727J2355+4950
201904161.722J2355+4950
201904161.730J2355+4950
201904171.720J2355+4950
201904181.727J2355+4950
201904191.718J2355+4950
201904191.735J2355+4950
201904201.765J2355+4950
201904201.718J2355+4950
201904211.730J2355+4950
201904211.715J2355+4950
201904221.732J2355+4950
201904261.759J2355+4950
201904271.695J2355+4950
201904281.715J2355+4950
201904301.684J2355+4950
201905031.731J2355+4950
201905061.682J2355+4950
201905101.729J2355+4950
201905141.768J2355+4950
201905141.712J2355+4950
201909021.692J2355+4950
201909111.682J2355+4950
201909151.649J2355+4950
201909191.680J2355+4950
201910101.704J2355+4950
201910191.720J2355+4950
202007101.782J2355+4950
202007161.806J2355+4950
202007171.770J2355+4950
202007181.773J2355+4950
202007191.746J2355+4950
202007191.765J2355+4950
202008011.735J2355+4950
202008021.732J2355+4950
202008041.735J2355+4950
202008041.726J2355+4950
202008051.739J2355+4950
202008061.724J2355+4950
202008071.730J2355+4950
202008081.718J2355+4950
202008091.728J2355+4950
202008101.744J2355+4950
202008101.725J2355+4950
202008111.731J2355+4950
202008151.746J2355+4950
202008151.720J2355+4950
202008161.714J2355+4950
202008171.706J2355+4950
202008181.701J2355+4950
202008181.702J2355+4950
202008211.697J2355+4950
202008221.709J2355+4950
202008231.698J2355+4950
202008251.701J2355+4950
202008261.702J2355+4950
202008311.697J2355+4950
202009031.692J2355+4950
202009041.687J2355+4950
202009051.700J2355+4950
202009051.706J2355+4950
202009061.688J2355+4950
202009071.699J2355+4950
202009071.705J2355+4950
202009091.701J2355+4950
202009101.667J2355+4950
202009101.683J2355+4950
202009111.698J2355+4950
202009121.671J2355+4950
202009131.692J2355+4950
202009191.673J2355+4950
202009191.676J2355+4950
202009211.673J2355+4950
202009211.670J2355+4950
202009261.688J2355+4950
202009271.701J2355+4950
202010091.670J2355+4950
202010111.671J2355+4950
202010121.683J2355+4950
202010141.690J2355+4950
202010151.690J2355+4950
202010161.688J2355+4950
202010201.712J2355+4950
202010201.706J2355+4950
202010211.708J2355+4950
202010211.711J2355+4950
202010221.767J2355+4950
202010221.710J2355+4950
202010231.711J2355+4950
202010251.713J2355+4950
202010251.727J2355+4950
202010261.718J2355+4950
202010261.730J2355+4950
202010271.888J2355+4950
202010271.730J2355+4950
202010281.736J2355+4950
202010281.742J2355+4950
202010291.708J2355+4950
202010291.774J2355+4950
202010291.742J2355+4950
202010301.742J2355+4950
202010311.757J2355+4950
202010311.734J2355+4950
202011011.715J2355+4950
202011011.741J2355+4950
202011021.715J2355+4950
202011031.734J2355+4950
202011041.713J2355+4950
202011051.739J2355+4950
202107231.674J2355+4950
202108051.674J2355+4950
202108071.677J2355+4950
202108311.687J2355+4950
202109281.622J2355+4950
202109291.628J2355+4950
202109291.606J2355+4950
202110011.662J2355+4950
202110021.663J2355+4950
202110021.648J2355+4950
202110031.654J2355+4950
202110051.666J2355+4950
202110061.662J2355+4950
202110071.685J2355+4950
202110081.673J2355+4950
202110101.686J2355+4950
202110171.715J2355+4950
202110181.721J2355+4950
202110191.712J2355+4950
202110231.724J2355+4950
202110241.687J2355+4950
202110261.699J2355+4950
202110271.711J2355+4950
202110281.703J2355+4950
202111021.691J2355+4950
202111021.697J2355+4950
202111041.695J2355+4950
202111041.698J2355+4950
202111051.684J2355+4950
202111061.683J2355+4950
202111071.676J2355+4950
202111081.674J2355+4950
202111091.676J2355+4950
202111091.656J2355+4950
202111101.682J2355+4950
202111101.674J2355+4950
202111111.670J2355+4950
202111121.687J2355+4950
202111131.644J2355+4950
202111161.662J2355+4950
202111171.700J2355+4950
202111171.662J2355+4950
202111181.657J2355+4950
202111191.668J2355+4950
202111201.685J2355+4950
202111201.664J2355+4950
202111211.652J2355+4950
202111221.642J2355+4950
202111231.671J2355+4950
202111241.671J2355+4950
202111251.668J2355+4950
202111251.638J2355+4950
202111271.646J2355+4950
202111281.650J2355+4950
202111291.643J2355+4950
202111301.661J2355+4950
202111301.651J2355+4950
202112011.656J2355+4950
202112011.635J2355+4950
202112021.654J2355+4950
202112031.670J2355+4950
202112031.648J2355+4950
202112041.660J2355+4950
202112041.656J2355+4950
202112051.652J2355+4950
202112051.647J2355+4950
202112061.653J2355+4950
202112061.644J2355+4950
202112081.661J2355+4950
202112091.666J2355+4950
202112101.679J2355+4950
202112111.703J2355+4950
202112131.729J2355+4950
202112141.737J2355+4950
202112151.749J2355+4950
202112221.730J2355+4950
202201301.774J2355+4950
202201311.726J2355+4950
202201311.741J2355+4950
202202031.712J2355+4950
202202041.704J2355+4950
202202041.707J2355+4950
202202051.707J2355+4950
202202051.700J2355+4950
202202061.706J2355+4950
202202071.707J2355+4950
202202081.699J2355+4950
202202081.700J2355+4950
202202091.730J2355+4950
202202101.712J2355+4950
202202111.707J2355+4950
202202111.703J2355+4950
202202111.699J2355+4950
202202121.714J2355+4950
202202131.725J2355+4950
202202131.728J2355+4950
202202151.714J2355+4950
202202181.721J2355+4950
202202191.723J2355+4950
202202201.746J2355+4950
202202211.760J2355+4950
C-band data (open squares)
201711031.174J2355+4950
201711091.132J2355+4950
201711211.157J2355+4950
201711211.113J2355+4950
201712021.118J2355+4950
201811251.118J2355+4950
201812041.089J2355+4950
201812051.088J2355+4950
201812081.093J2355+4950
201812111.072J2355+4950
201812211.069J2355+4950
201812221.063J2355+4950
201902231.141J2355+4950
201902241.094J2355+4950
201902251.105J2355+4950
201904141.119J2355+4950
201904221.116J2355+4950
201904221.105J2355+4950
201906261.086J2355+4950
201908251.085J2355+4950
201909021.173J2355+4950
201909151.078J2355+4950
201909191.118J2355+4950
201909221.075J2355+4950
202103021.030J2355+4950
202107221.138J2355+4950
202108041.136J2355+4950
202108101.132J2355+4950
202203111.199J2355+4950
X-band data (X-crosses)
201710120.974J2355+4950
201711170.976J2355+4950
201903150.744J2355+4950
201903180.753J2355+4950
202002101.208J2355+4950
202002170.800J2355+4950
202102280.726J2355+4950
202106230.804J2355+4950
U-band data (filled squares)
201803220.992J2355+4950
202101020.560J2355+4950
202101040.559J2355+4950
202101050.551J2355+4950
202103060.554J2355+4950
K-band data (open circles)
201711210.429J2355+4950
201904220.437J2355+4950
201904220.386J2355+4950
A-band data (6-pointed stars)
201811090.241leakage
201811090.242leakage
201811100.240leakage
201811110.242leakage
201811120.247leakage
201811130.243leakage
201811150.245leakage
201811160.245leakage
Q-band data (filled circles)
201801140.250J2355+4950
201801230.341J2355+4950
201801270.333J2355+4950
201811180.179J2355+4950
201811180.191J2355+4950
201811270.193J2355+4950
201908010.197J2355+4950
202104020.221J2355+4950
202110040.234J2355+4950
202110210.234J2355+4950
202208140.260J2355+4950
202301140.229J2355+4950
202305100.219J2355+4950
202305100.238J2355+4950