Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1556+335 (2026a, independent mode)

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

Right ascension: 239.7299427742986°
Declination: 33.3885018762220°
No. sessions: 6
No. delays: 397
Defining: No
RMS(α cos δ) = 0.6448 mas
RMS(δ) = 1.1639 mas
Variability ellipse semimajor axis = 1.2307 mas
Variability ellipse semiminor axis = 0.5056 mas
Variability ellipse position angle = -20.8 deg
Equivalent α-δ correlation = -0.56

Observed in only 6 session(s)

Quarterly time series for 1556+335 (2026a, 4 global solutions)

Data

Right ascension: 239.7299428355427°
Declination: 33.3885017737433°
No. sessions: 6
No. delays: 397
Defining: No
RMS(α cos δ) = 0.0944 mas
RMS(δ) = 0.2567 mas
Variability ellipse semimajor axis = 0.2692 mas
Variability ellipse semiminor axis = 0.0481 mas
Variability ellipse position angle = -17.8 deg
Equivalent α-δ correlation = -0.85

Observed in only 6 session(s)