Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1623+578 (2026b, independent mode)

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

Right ascension: 246.1033639366834°
Declination: 57.6878560520080°
No. sessions: 429
No. delays: 16152
Defining: Yes
RMS(α cos δ) = 106.8542 mas
RMS(δ) = 46.5901 mas
Variability ellipse semimajor axis = 120.4836 mas
Variability ellipse semiminor axis = 30.4604 mas
Variability ellipse position angle = -63.3 deg
Equivalent α-δ correlation = -1.24

Quarterly time series for 1623+578 (2026b, 4 global solutions)

Data

Right ascension: 246.1033648923770°
Declination: 57.6878558302325°
No. sessions: 361
No. delays: 15948
Defining: Yes
RMS(α cos δ) = 0.2629 mas
RMS(δ) = 0.2171 mas
Variability ellipse semimajor axis = 0.2653 mas
Variability ellipse semiminor axis = 0.2143 mas
Variability ellipse position angle = -77.0 deg
Equivalent α-δ correlation = -0.09