Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1928+738 (2026b, independent mode)

Data - BVID - NED - MOJAVE - SIMBAD - PanSTARRS-1

Right ascension: 291.9520629377985°
Declination: 73.9671028455440°
No. sessions: 168
No. delays: 6791
Defining: No
RMS(α cos δ) = 6.3338 mas
RMS(δ) = 3.6167 mas
Variability ellipse semimajor axis = 6.7598 mas
Variability ellipse semiminor axis = 2.7392 mas
Variability ellipse position angle = 67.5 deg
Equivalent α-δ correlation = 0.59

Quarterly time series for 1928+738 (2026b, 4 global solutions)

Data

Right ascension: 291.9520631492140°
Declination: 73.9671028218496°
No. sessions: 154
No. delays: 6749
Defining: No
RMS(α cos δ) = 0.2302 mas
RMS(δ) = 0.4817 mas
Variability ellipse semimajor axis = 0.4841 mas
Variability ellipse semiminor axis = 0.2252 mas
Variability ellipse position angle = -6.4 deg
Equivalent α-δ correlation = -0.18