Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1928+154 (2026a, independent mode)

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

Right ascension: 292.7198625139201°
Declination: 15.5428963877376°
No. sessions: 58
No. delays: 2364
Defining: No
RMS(α cos δ) = 5.2417 mas
RMS(δ) = 4.7302 mas
Variability ellipse semimajor axis = 6.6927 mas
Variability ellipse semiminor axis = 2.2490 mas
Variability ellipse position angle = -48.6 deg
Equivalent α-δ correlation = -0.79

Quarterly time series for 1928+154 (2026a, 4 global solutions)

Data

Right ascension: 292.7198624537516°
Declination: 15.5428964490814°
No. sessions: 50
No. delays: 2340
Defining: No
RMS(α cos δ) = 0.1344 mas
RMS(δ) = 0.2416 mas
Variability ellipse semimajor axis = 0.2423 mas
Variability ellipse semiminor axis = 0.1332 mas
Variability ellipse position angle = 5.2 deg
Equivalent α-δ correlation = 0.11