Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1221+405 (2026b, independent mode)

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

Right ascension: 186.1009763891531°
Declination: 40.2529088549662°
No. sessions: 6
No. delays: 264
Defining: No
RMS(α cos δ) = 1.2608 mas
RMS(δ) = 1.2729 mas
Variability ellipse semimajor axis = 1.7339 mas
Variability ellipse semiminor axis = 0.4513 mas
Variability ellipse position angle = -44.6 deg
Equivalent α-δ correlation = -0.87

Observed in only 6 session(s)

Quarterly time series for 1221+405 (2026b, 4 global solutions)

Data

Right ascension: 186.1009765561908°
Declination: 40.2529087167131°
No. sessions: 6
No. delays: 264
Defining: No
RMS(α cos δ) = 0.5497 mas
RMS(δ) = 0.5204 mas
Variability ellipse semimajor axis = 0.5886 mas
Variability ellipse semiminor axis = 0.4760 mas
Variability ellipse position angle = -52.5 deg
Equivalent α-δ correlation = -0.20

Observed in only 6 session(s)