Paris Observatory Geodetic VLBI Center

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

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

Right ascension: 250.7450458704878°
Declination: 39.8102887151075°
No. sessions: 1350
No. delays: 55231
Defining: No
RMS(α cos δ) = 3131.4711 mas
RMS(δ) = 3810.8247 mas
Variability ellipse semimajor axis = 4943.2738 mas
Variability ellipse semiminor axis = 327.8106 mas
Variability ellipse position angle = -39.4 deg
Equivalent α-δ correlation = -1.01

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

Data

Right ascension: 250.7450415682798°
Declination: 39.8102760737796°
No. sessions: 1327
No. delays: 55311
Defining: No
RMS(α cos δ) = 0.8912 mas
RMS(δ) = 0.9406 mas
Variability ellipse semimajor axis = 0.9415 mas
Variability ellipse semiminor axis = 0.8902 mas
Variability ellipse position angle = -7.7 deg
Equivalent α-δ correlation = -0.01