Paris Observatory Geodetic VLBI Center

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

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

Right ascension: 240.0105747884614°
Declination: 4.2160618030426°
No. sessions: 6
No. delays: 321
Defining: No
RMS(α cos δ) = 14.7879 mas
RMS(δ) = 23.6172 mas
Variability ellipse semimajor axis = 26.4194 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 (2026b, 4 global solutions)

Data

Right ascension: 240.0105723862153°
Declination: 4.2160636254977°
No. sessions: 6
No. delays: 321
Defining: No
RMS(α cos δ) = 0.2932 mas
RMS(δ) = 0.3708 mas
Variability ellipse semimajor axis = 0.4090 mas
Variability ellipse semiminor axis = 0.2369 mas
Variability ellipse position angle = -31.2 deg
Equivalent α-δ correlation = -0.45

Observed in only 6 session(s)