Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1557+032 (2026b, independent mode)

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

Right ascension: 239.8778247960638°
Declination: 3.0801169882881°
No. sessions: 150
No. delays: 5924
Defining: Yes
RMS(α cos δ) = 115309.0130 mas
RMS(δ) = 9566.2365 mas
Variability ellipse semimajor axis = 115423.6601 mas
Variability ellipse semiminor axis = 8065.9801 mas
Variability ellipse position angle = -87.4 deg
Equivalent α-δ correlation = -0.54

Quarterly time series for 1557+032 (2026b, 4 global solutions)

Data

Right ascension: 239.8790525755393°
Declination: 3.0800713394723°
No. sessions: 138
No. delays: 5901
Defining: Yes
RMS(α cos δ) = 0.2094 mas
RMS(δ) = 0.3480 mas
Variability ellipse semimajor axis = 0.3594 mas
Variability ellipse semiminor axis = 0.1891 mas
Variability ellipse position angle = -17.1 deg
Equivalent α-δ correlation = -0.36