Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1138+644 (2026b, independent mode)

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

Right ascension: 175.3009509327946°
Declination: 64.1681966598262°
No. sessions: 5
No. delays: 436
Defining: No
RMS(α cos δ) = 0.5542 mas
RMS(δ) = 0.5369 mas
Variability ellipse semimajor axis = 0.5863 mas
Variability ellipse semiminor axis = 0.5017 mas
Variability ellipse position angle = 50.9 deg
Equivalent α-δ correlation = 0.15

Observed in only 5 session(s)

Quarterly time series for 1138+644 (2026b, 4 global solutions)

Data

Right ascension: 175.3009507260513°
Declination: 64.1681966005372°
No. sessions: 5
No. delays: 436
Defining: No
RMS(α cos δ) = 0.1656 mas
RMS(δ) = 0.1614 mas
Variability ellipse semimajor axis = 0.1686 mas
Variability ellipse semiminor axis = 0.1582 mas
Variability ellipse position angle = -56.8 deg
Equivalent α-δ correlation = -0.06

Observed in only 5 session(s)