Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1645+224 (2026b, independent mode)

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

Right ascension: 252.0063980859194°
Declination: 22.4092077715269°
No. sessions: 89
No. delays: 3033
Defining: No
RMS(α cos δ) = 0.3167 mas
RMS(δ) = 0.3574 mas
Variability ellipse semimajor axis = 0.3578 mas
Variability ellipse semiminor axis = 0.3163 mas
Variability ellipse position angle = -5.5 deg
Equivalent α-δ correlation = -0.02

Observed in only 89 session(s)

Quarterly time series for 1645+224 (2026b, 4 global solutions)

Data

Right ascension: 252.0063981025706°
Declination: 22.4092077566377°
No. sessions: 75
No. delays: 2991
Defining: No
RMS(α cos δ) = 0.1784 mas
RMS(δ) = 0.2414 mas
Variability ellipse semimajor axis = 0.2443 mas
Variability ellipse semiminor axis = 0.1743 mas
Variability ellipse position angle = 12.8 deg
Equivalent α-δ correlation = 0.15

Observed in only 75 session(s)