Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1557+043 (2026a, independent mode)

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

Right ascension: 240.0105747884585°
Declination: 4.2160618031420°
No. sessions: 6
No. delays: 321
Defining: No
RMS(α cos δ) = 14.7882 mas
RMS(δ) = 23.6175 mas
Variability ellipse semimajor axis = 26.4198 mas
Variability ellipse semiminor axis = 8.8583 mas
Variability ellipse position angle = -28.4 deg
Equivalent α-δ correlation = -0.74

Observed in only 6 session(s)

Quarterly time series for 1557+043 (2026a, 4 global solutions)

Data

Right ascension: 240.0105724074976°
Declination: 4.2160636146944°
No. sessions: 6
No. delays: 321
Defining: No
RMS(α cos δ) = 0.2750 mas
RMS(δ) = 0.3492 mas
Variability ellipse semimajor axis = 0.3869 mas
Variability ellipse semiminor axis = 0.2188 mas
Variability ellipse position angle = -31.4 deg
Equivalent α-δ correlation = -0.47

Observed in only 6 session(s)