Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1257+123 (2026b, independent mode)

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

Right ascension: 195.0080787058555°
Declination: 12.1061440245625°
No. sessions: 5
No. delays: 401
Defining: No
RMS(α cos δ) = 0.2018 mas
RMS(δ) = 0.3580 mas
Variability ellipse semimajor axis = 0.3796 mas
Variability ellipse semiminor axis = 0.1575 mas
Variability ellipse position angle = -21.4 deg
Equivalent α-δ correlation = -0.56

Observed in only 5 session(s)

Quarterly time series for 1257+123 (2026b, 4 global solutions)

Data

Right ascension: 195.0080786833859°
Declination: 12.1061438766168°
No. sessions: 5
No. delays: 401
Defining: No
RMS(α cos δ) = 0.1422 mas
RMS(δ) = 0.2935 mas
Variability ellipse semimajor axis = 0.3210 mas
Variability ellipse semiminor axis = 0.0576 mas
Variability ellipse position angle = -24.3 deg
Equivalent α-δ correlation = -0.90

Observed in only 5 session(s)