Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1556+744 (2026b, independent mode)

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

Right ascension: 239.0124587679856°
Declination: 74.3494835540619°
No. sessions: 7
No. delays: 689
Defining: No
RMS(α cos δ) = 5.5344 mas
RMS(δ) = 0.7186 mas
Variability ellipse semimajor axis = 5.5712 mas
Variability ellipse semiminor axis = 0.3277 mas
Variability ellipse position angle = 83.3 deg
Equivalent α-δ correlation = 0.89

Observed in only 7 session(s)

Quarterly time series for 1556+744 (2026b, 4 global solutions)

Data

Right ascension: 239.0124606363267°
Declination: 74.3494836184110°
No. sessions: 7
No. delays: 689
Defining: No
RMS(α cos δ) = 0.1557 mas
RMS(δ) = 0.3387 mas
Variability ellipse semimajor axis = 0.3391 mas
Variability ellipse semiminor axis = 0.1547 mas
Variability ellipse position angle = 3.3 deg
Equivalent α-δ correlation = 0.10

Observed in only 7 session(s)