Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1823+689 (2026b, independent mode)

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

Right ascension: 275.8868909592204°
Declination: 68.9646144518828°
No. sessions: 116
No. delays: 5354
Defining: Yes
RMS(α cos δ) = 5.9905 mas
RMS(δ) = 7.5192 mas
Variability ellipse semimajor axis = 9.1925 mas
Variability ellipse semiminor axis = 2.8147 mas
Variability ellipse position angle = 37.1 deg
Equivalent α-δ correlation = 0.82

Quarterly time series for 1823+689 (2026b, 4 global solutions)

Data

Right ascension: 275.8868913029226°
Declination: 68.9646145781637°
No. sessions: 103
No. delays: 5315
Defining: Yes
RMS(α cos δ) = 0.1978 mas
RMS(δ) = 0.1894 mas
Variability ellipse semimajor axis = 0.2152 mas
Variability ellipse semiminor axis = 0.1693 mas
Variability ellipse position angle = 50.2 deg
Equivalent α-δ correlation = 0.23