Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 0556+238 (2026b, independent mode)

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

Right ascension: 89.8832753564323°
Declination: 23.8980950245281°
No. sessions: 855
No. delays: 23881
Defining: Yes
RMS(α cos δ) = 21900.9969 mas
RMS(δ) = 17797.3006 mas
Variability ellipse semimajor axis = 29632.3578 mas
Variability ellipse semiminor axis = 9037.6467 mas
Variability ellipse position angle = 49.8 deg
Equivalent α-δ correlation = 1.21

Quarterly time series for 0556+238 (2026b, 4 global solutions)

Data

Right ascension: 89.8834713746934°
Declination: 23.8983129872732°
No. sessions: 792
No. delays: 23658
Defining: Yes
RMS(α cos δ) = 0.1759 mas
RMS(δ) = 0.3318 mas
Variability ellipse semimajor axis = 0.3326 mas
Variability ellipse semiminor axis = 0.1743 mas
Variability ellipse position angle = 4.6 deg
Equivalent α-δ correlation = 0.11