Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1228+126 (2026b, independent mode)

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

Right ascension: 187.7059384877251°
Declination: 12.3911242289465°
No. sessions: 2530
No. delays: 106169
Defining: No
RMS(α cos δ) = 401.4346 mas
RMS(δ) = 453.6925 mas
Variability ellipse semimajor axis = 487.3416 mas
Variability ellipse semiminor axis = 359.8400 mas
Variability ellipse position angle = 32.7 deg
Equivalent α-δ correlation = 0.27

Quarterly time series for 1228+126 (2026b, 4 global solutions)

Data

Right ascension: 187.7059307803367°
Declination: 12.3911232326240°
No. sessions: 2460
No. delays: 106030
Defining: No
RMS(α cos δ) = 0.2718 mas
RMS(δ) = 0.2504 mas
Variability ellipse semimajor axis = 0.2798 mas
Variability ellipse semiminor axis = 0.2415 mas
Variability ellipse position angle = -61.9 deg
Equivalent α-δ correlation = -0.12