Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1821+107 (2026b, independent mode)

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

Right ascension: 276.0118968923335°
Declination: 10.7399372122360°
No. sessions: 142
No. delays: 3099
Defining: No
RMS(α cos δ) = 203318.1305 mas
RMS(δ) = 334944.2101 mas
Variability ellipse semimajor axis = 490399.8653 mas
Variability ellipse semiminor axis = 94900.2234 mas
Variability ellipse position angle = -38.7 deg
Equivalent α-δ correlation = -2.35

Quarterly time series for 1821+107 (2026b, 4 global solutions)

Data

Right ascension: 276.0118968822729°
Declination: 10.7399372054737°
No. sessions: 125
No. delays: 3036
Defining: No
RMS(α cos δ) = 0.2633 mas
RMS(δ) = 0.4699 mas
Variability ellipse semimajor axis = 0.4699 mas
Variability ellipse semiminor axis = 0.2633 mas
Variability ellipse position angle = -0.1 deg
Equivalent α-δ correlation = -0.00