Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1902+556 (2026b, independent mode)

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

Right ascension: 285.7983643033526°
Declination: 55.6773468938608°
No. sessions: 7
No. delays: 681
Defining: No
RMS(α cos δ) = 0.5118 mas
RMS(δ) = 0.3565 mas
Variability ellipse semimajor axis = 0.5258 mas
Variability ellipse semiminor axis = 0.3355 mas
Variability ellipse position angle = -72.6 deg
Equivalent α-δ correlation = -0.26

Observed in only 7 session(s)

Quarterly time series for 1902+556 (2026b, 4 global solutions)

Data

Right ascension: 285.7983642364721°
Declination: 55.6773469335203°
No. sessions: 7
No. delays: 681
Defining: No
RMS(α cos δ) = 0.1432 mas
RMS(δ) = 0.2329 mas
Variability ellipse semimajor axis = 0.2421 mas
Variability ellipse semiminor axis = 0.1269 mas
Variability ellipse position angle = 18.7 deg
Equivalent α-δ correlation = 0.39

Observed in only 7 session(s)