Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1803+784 (2026b, independent mode)

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

Right ascension: 270.1903686352583°
Declination: 78.4677861088446°
No. sessions: 3326
No. delays: 392080
Defining: No
RMS(α cos δ) = 1039.5108 mas
RMS(δ) = 721.7137 mas
Variability ellipse semimajor axis = 1177.7639 mas
Variability ellipse semiminor axis = 462.9531 mas
Variability ellipse position angle = 59.2 deg
Equivalent α-δ correlation = 0.69

Quarterly time series for 1803+784 (2026b, 4 global solutions)

Data

Right ascension: 270.1903497202085°
Declination: 78.4677828880206°
No. sessions: 3270
No. delays: 392118
Defining: No
RMS(α cos δ) = 0.1259 mas
RMS(δ) = 0.1504 mas
Variability ellipse semimajor axis = 0.1506 mas
Variability ellipse semiminor axis = 0.1255 mas
Variability ellipse position angle = 6.2 deg
Equivalent α-δ correlation = 0.04