Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1020+400 (2026b, independent mode)

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

Right ascension: 155.7981903009931°
Declination: 39.8042736378423°
No. sessions: 33
No. delays: 1557
Defining: No
RMS(α cos δ) = 0.3714 mas
RMS(δ) = 4.8936 mas
Variability ellipse semimajor axis = 4.8981 mas
Variability ellipse semiminor axis = 0.3067 mas
Variability ellipse position angle = 2.4 deg
Equivalent α-δ correlation = 0.56

Observed in only 33 session(s)

Quarterly time series for 1020+400 (2026b, 4 global solutions)

Data

Right ascension: 155.7981902853607°
Declination: 39.8042736994574°
No. sessions: 32
No. delays: 1554
Defining: No
RMS(α cos δ) = 0.1649 mas
RMS(δ) = 0.2009 mas
Variability ellipse semimajor axis = 0.2251 mas
Variability ellipse semiminor axis = 0.1300 mas
Variability ellipse position angle = -33.5 deg
Equivalent α-δ correlation = -0.47

Observed in only 32 session(s)