Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1641+399 (2026a, independent mode)

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

Right ascension: 250.7450415056473°
Declination: 39.8102760884534°
No. sessions: 1395
No. delays: 57611
Defining: No
RMS(α cos δ) = 2.3990 mas
RMS(δ) = 3.4990 mas
Variability ellipse semimajor axis = 3.5063 mas
Variability ellipse semiminor axis = 2.3883 mas
Variability ellipse position angle = 5.0 deg
Equivalent α-δ correlation = 0.07

Quarterly time series for 1641+399 (2026a, 4 global solutions)

Data

Right ascension: 250.7450415768569°
Declination: 39.8102760885628°
No. sessions: 1348
No. delays: 55850
Defining: No
RMS(α cos δ) = 1.1263 mas
RMS(δ) = 1.1779 mas
Variability ellipse semimajor axis = 1.3621 mas
Variability ellipse semiminor axis = 0.8948 mas
Variability ellipse position angle = -41.7 deg
Equivalent α-δ correlation = -0.39