Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1221+484 (2026b, independent mode)

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

Right ascension: 185.9926272393186°
Declination: 48.2160177721728°
No. sessions: 5
No. delays: 438
Defining: No
RMS(α cos δ) = 1.0821 mas
RMS(δ) = 1.2682 mas
Variability ellipse semimajor axis = 1.5440 mas
Variability ellipse semiminor axis = 0.6285 mas
Variability ellipse position angle = 38.6 deg
Equivalent α-δ correlation = 0.71

Observed in only 5 session(s)

Quarterly time series for 1221+484 (2026b, 4 global solutions)

Data

Right ascension: 185.9926276112169°
Declination: 48.2160179017332°
No. sessions: 5
No. delays: 438
Defining: No
RMS(α cos δ) = 0.3491 mas
RMS(δ) = 0.2291 mas
Variability ellipse semimajor axis = 0.3550 mas
Variability ellipse semiminor axis = 0.2199 mas
Variability ellipse position angle = 76.6 deg
Equivalent α-δ correlation = 0.22

Observed in only 5 session(s)