Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1231+507 (2026b, independent mode)

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

Right ascension: 188.4552766608777°
Declination: 50.4396604339875°
No. sessions: 6
No. delays: 422
Defining: No
RMS(α cos δ) = 3.7574 mas
RMS(δ) = 1.5860 mas
Variability ellipse semimajor axis = 4.0043 mas
Variability ellipse semiminor axis = 0.7738 mas
Variability ellipse position angle = 69.3 deg
Equivalent α-δ correlation = 0.85

Observed in only 6 session(s)

Quarterly time series for 1231+507 (2026b, 4 global solutions)

Data

Right ascension: 188.4552772706289°
Declination: 50.4396605689709°
No. sessions: 6
No. delays: 422
Defining: No
RMS(α cos δ) = 0.3034 mas
RMS(δ) = 0.5215 mas
Variability ellipse semimajor axis = 0.5357 mas
Variability ellipse semiminor axis = 0.2775 mas
Variability ellipse position angle = -15.5 deg
Equivalent α-δ correlation = -0.34

Observed in only 6 session(s)