Paris Observatory Geodetic VLBI Center

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

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

Right ascension: 270.1903497469719°
Declination: 78.4677829117682°
No. sessions: 3388
No. delays: 416564
Defining: No
RMS(α cos δ) = 2.6000 mas
RMS(δ) = 2.5675 mas
Variability ellipse semimajor axis = 3.4268 mas
Variability ellipse semiminor axis = 1.2686 mas
Variability ellipse position angle = 45.4 deg
Equivalent α-δ correlation = 0.76

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

Data

Right ascension: 270.1903497301382°
Declination: 78.4677828909902°
No. sessions: 3297
No. delays: 403539
Defining: No
RMS(α cos δ) = 0.5295 mas
RMS(δ) = 0.1628 mas
Variability ellipse semimajor axis = 0.5356 mas
Variability ellipse semiminor axis = 0.1414 mas
Variability ellipse position angle = 81.0 deg
Equivalent α-δ correlation = 0.48