Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1221+248 (2026b, independent mode)

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

Right ascension: 186.1007756534690°
Declination: 24.6065277475221°
No. sessions: 11
No. delays: 241
Defining: No
RMS(α cos δ) = 5.0049 mas
RMS(δ) = 3.8089 mas
Variability ellipse semimajor axis = 5.6226 mas
Variability ellipse semiminor axis = 2.8185 mas
Variability ellipse position angle = -58.2 deg
Equivalent α-δ correlation = -0.56

Observed in only 11 session(s)

Quarterly time series for 1221+248 (2026b, 4 global solutions)

Data

Right ascension: 186.1007754688058°
Declination: 24.6065277417333°
No. sessions: 11
No. delays: 241
Defining: No
RMS(α cos δ) = 1.1156 mas
RMS(δ) = 1.9081 mas
Variability ellipse semimajor axis = 1.9485 mas
Variability ellipse semiminor axis = 1.0435 mas
Variability ellipse position angle = 13.8 deg
Equivalent α-δ correlation = 0.30

Observed in only 11 session(s)