Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1809+568 (2026b, independent mode)

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

Right ascension: 272.5138291504394°
Declination: 56.8230473327930°
No. sessions: 5
No. delays: 483
Defining: No
RMS(α cos δ) = 0.4982 mas
RMS(δ) = 0.3975 mas
Variability ellipse semimajor axis = 0.5761 mas
Variability ellipse semiminor axis = 0.2727 mas
Variability ellipse position angle = -55.2 deg
Equivalent α-δ correlation = -0.61

Observed in only 5 session(s)

Quarterly time series for 1809+568 (2026b, 4 global solutions)

Data

Right ascension: 272.5138293593579°
Declination: 56.8230473007142°
No. sessions: 5
No. delays: 483
Defining: No
RMS(α cos δ) = 0.1110 mas
RMS(δ) = 0.1845 mas
Variability ellipse semimajor axis = 0.2036 mas
Variability ellipse semiminor axis = 0.0702 mas
Variability ellipse position angle = -26.7 deg
Equivalent α-δ correlation = -0.72

Observed in only 5 session(s)