Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1638+124 (2026b, independent mode)

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

Right ascension: 250.1997451347422°
Declination: 12.3339109269373°
No. sessions: 5
No. delays: 546
Defining: No
RMS(α cos δ) = 0.1499 mas
RMS(δ) = 0.3425 mas
Variability ellipse semimajor axis = 0.3477 mas
Variability ellipse semiminor axis = 0.1373 mas
Variability ellipse position angle = 10.8 deg
Equivalent α-δ correlation = 0.37

Observed in only 5 session(s)

Quarterly time series for 1638+124 (2026b, 4 global solutions)

Data

Right ascension: 250.1997451323126°
Declination: 12.3339108732557°
No. sessions: 5
No. delays: 546
Defining: No
RMS(α cos δ) = 0.0732 mas
RMS(δ) = 0.1852 mas
Variability ellipse semimajor axis = 0.1932 mas
Variability ellipse semiminor axis = 0.0482 mas
Variability ellipse position angle = -17.1 deg
Equivalent α-δ correlation = -0.73

Observed in only 5 session(s)