Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1639-062 (2026a, independent mode)

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

Right ascension: 250.5090918375200°
Declination: -6.3565763447928°
No. sessions: 1002
No. delays: 65238
Defining: Yes
RMS(α cos δ) = 616.8377 mas
RMS(δ) = 710.5191 mas
Variability ellipse semimajor axis = 816.1745 mas
Variability ellipse semiminor axis = 468.1723 mas
Variability ellipse position angle = 36.9 deg
Equivalent α-δ correlation = 0.49

Quarterly time series for 1639-062 (2026a, 4 global solutions)

Data

Right ascension: 250.5090738238351°
Declination: -6.3565819656575°
No. sessions: 957
No. delays: 63755
Defining: Yes
RMS(α cos δ) = 0.1835 mas
RMS(δ) = 0.1361 mas
Variability ellipse semimajor axis = 0.1848 mas
Variability ellipse semiminor axis = 0.1343 mas
Variability ellipse position angle = -79.9 deg
Equivalent α-δ correlation = -0.11