Paris Observatory Geodetic VLBI Center

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

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

Right ascension: 246.1033639734370°
Declination: 57.6878560366572°
No. sessions: 430
No. delays: 17922
Defining: Yes
RMS(α cos δ) = 104.0660 mas
RMS(δ) = 44.6689 mas
Variability ellipse semimajor axis = 117.0685 mas
Variability ellipse semiminor axis = 29.6648 mas
Variability ellipse position angle = -63.6 deg
Equivalent α-δ correlation = -1.25

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

Data

Right ascension: 246.1033649017929°
Declination: 57.6878558406375°
No. sessions: 360
No. delays: 17563
Defining: Yes
RMS(α cos δ) = 0.2352 mas
RMS(δ) = 0.2199 mas
Variability ellipse semimajor axis = 0.2390 mas
Variability ellipse semiminor axis = 0.2158 mas
Variability ellipse position angle = -65.8 deg
Equivalent α-δ correlation = -0.08