Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1617+229 (2026a, independent mode)

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

Right ascension: 244.8117755433905°
Declination: 22.7966273140217°
No. sessions: 530
No. delays: 25045
Defining: No
RMS(α cos δ) = 327.2757 mas
RMS(δ) = 163.6527 mas
Variability ellipse semimajor axis = 357.0502 mas
Variability ellipse semiminor axis = 80.0421 mas
Variability ellipse position angle = 65.7 deg
Equivalent α-δ correlation = 0.85

Quarterly time series for 1617+229 (2026a, 4 global solutions)

Data

Right ascension: 244.8117691809528°
Declination: 22.7966252681838°
No. sessions: 506
No. delays: 24525
Defining: No
RMS(α cos δ) = 0.1984 mas
RMS(δ) = 0.2688 mas
Variability ellipse semimajor axis = 0.2839 mas
Variability ellipse semiminor axis = 0.1762 mas
Variability ellipse position angle = -24.2 deg
Equivalent α-δ correlation = -0.35