Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1557+565 (2026b, independent mode)

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

Right ascension: 239.7012039138658°
Declination: 56.4205886119646°
No. sessions: 5
No. delays: 405
Defining: No
RMS(α cos δ) = 0.7496 mas
RMS(δ) = 0.3449 mas
Variability ellipse semimajor axis = 0.7965 mas
Variability ellipse semiminor axis = 0.2156 mas
Variability ellipse position angle = 69.4 deg
Equivalent α-δ correlation = 0.75

Observed in only 5 session(s)

Quarterly time series for 1557+565 (2026b, 4 global solutions)

Data

Right ascension: 239.7012039317709°
Declination: 56.4205886266389°
No. sessions: 5
No. delays: 405
Defining: No
RMS(α cos δ) = 0.2572 mas
RMS(δ) = 0.1075 mas
Variability ellipse semimajor axis = 0.2576 mas
Variability ellipse semiminor axis = 0.1065 mas
Variability ellipse position angle = -86.5 deg
Equivalent α-δ correlation = -0.12

Observed in only 5 session(s)