Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1538+149 (2026b, independent mode)

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

Right ascension: 235.2062163231036°
Declination: 14.7960843845465°
No. sessions: 458
No. delays: 20118
Defining: Yes
RMS(α cos δ) = 204.2192 mas
RMS(δ) = 630.7399 mas
Variability ellipse semimajor axis = 658.9837 mas
Variability ellipse semiminor axis = 72.6550 mas
Variability ellipse position angle = 16.9 deg
Equivalent α-δ correlation = 0.93

Quarterly time series for 1538+149 (2026b, 4 global solutions)

Data

Right ascension: 235.2062146775624°
Declination: 14.7960790621655°
No. sessions: 432
No. delays: 20177
Defining: Yes
RMS(α cos δ) = 0.2017 mas
RMS(δ) = 0.2724 mas
Variability ellipse semimajor axis = 0.2753 mas
Variability ellipse semiminor axis = 0.1978 mas
Variability ellipse position angle = -12.0 deg
Equivalent α-δ correlation = -0.14