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: 276.0121736503373°
Declination: 10.7392466319724°
No. sessions: 140
No. delays: 3091
Defining: No
RMS(α cos δ) = 203860.8833 mas
RMS(δ) = 335310.0975 mas
Variability ellipse semimajor axis = 491011.2093 mas
Variability ellipse semiminor axis = 95126.8988 mas
Variability ellipse position angle = -38.7 deg
Equivalent α-δ correlation = -2.34

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