Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1806+456 (2026a, independent mode)

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

Right ascension: 272.0912117662900°
Declination: 45.7058081802327°
No. sessions: 560
No. delays: 48252
Defining: No
RMS(α cos δ) = 756.4309 mas
RMS(δ) = 765.9311 mas
Variability ellipse semimajor axis = 1025.4669 mas
Variability ellipse semiminor axis = 327.4993 mas
Variability ellipse position angle = 44.5 deg
Equivalent α-δ correlation = 0.81

Quarterly time series for 1806+456 (2026a, 4 global solutions)

Data

Right ascension: 272.0911912283588°
Declination: 45.7057962245648°
No. sessions: 530
No. delays: 47436
Defining: No
RMS(α cos δ) = 0.1168 mas
RMS(δ) = 0.1699 mas
Variability ellipse semimajor axis = 0.1700 mas
Variability ellipse semiminor axis = 0.1166 mas
Variability ellipse position angle = -2.3 deg
Equivalent α-δ correlation = -0.03