Paris Observatory Geodetic VLBI Center

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

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

Right ascension: 187.7059371316234°
Declination: 12.3911241947924°
No. sessions: 2591
No. delays: 114149
Defining: No
RMS(α cos δ) = 356.0017 mas
RMS(δ) = 411.3813 mas
Variability ellipse semimajor axis = 438.5788 mas
Variability ellipse semiminor axis = 321.9013 mas
Variability ellipse position angle = 30.6 deg
Equivalent α-δ correlation = 0.27

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

Data

Right ascension: 187.7059307790676°
Declination: 12.3911232302546°
No. sessions: 2478
No. delays: 109208
Defining: No
RMS(α cos δ) = 0.3475 mas
RMS(δ) = 0.3422 mas
Variability ellipse semimajor axis = 0.3817 mas
Variability ellipse semiminor axis = 0.3036 mas
Variability ellipse position angle = -46.9 deg
Equivalent α-δ correlation = -0.22