Paris Observatory Geodetic VLBI Center

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

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

Right ascension: 244.8117756714188°
Declination: 22.7966273403503°
No. sessions: 528
No. delays: 24616
Defining: No
RMS(α cos δ) = 330.5269 mas
RMS(δ) = 164.7271 mas
Variability ellipse semimajor axis = 360.4404 mas
Variability ellipse semiminor axis = 80.4102 mas
Variability ellipse position angle = 65.8 deg
Equivalent α-δ correlation = 0.85

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

Data

Right ascension: 244.8117691807068°
Declination: 22.7966252716581°
No. sessions: 510
No. delays: 24555
Defining: No
RMS(α cos δ) = 0.1953 mas
RMS(δ) = 0.2588 mas
Variability ellipse semimajor axis = 0.2804 mas
Variability ellipse semiminor axis = 0.1629 mas
Variability ellipse position angle = -28.1 deg
Equivalent α-δ correlation = -0.43