Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1531-221 (2026b, independent mode)

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

Right ascension: 233.5980334183183°
Declination: -22.3150947987604°
No. sessions: 11
No. delays: 529
Defining: No
RMS(α cos δ) = 0.6214 mas
RMS(δ) = 1.0519 mas
Variability ellipse semimajor axis = 1.0527 mas
Variability ellipse semiminor axis = 0.6200 mas
Variability ellipse position angle = 2.7 deg
Equivalent α-δ correlation = 0.05

Observed in only 11 session(s)

Quarterly time series for 1531-221 (2026b, 4 global solutions)

Data

Right ascension: 233.5980333631234°
Declination: -22.3150948688538°
No. sessions: 11
No. delays: 529
Defining: No
RMS(α cos δ) = 0.3752 mas
RMS(δ) = 0.3515 mas
Variability ellipse semimajor axis = 0.3782 mas
Variability ellipse semiminor axis = 0.3483 mas
Variability ellipse position angle = 71.2 deg
Equivalent α-δ correlation = 0.05

Observed in only 11 session(s)