Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1221+071 (2026a, independent mode)

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

Right ascension: 185.9776013013619°
Declination: 6.8340478463301°
No. sessions: 6
No. delays: 476
Defining: No
RMS(α cos δ) = 0.1821 mas
RMS(δ) = 0.3132 mas
Variability ellipse semimajor axis = 0.3159 mas
Variability ellipse semiminor axis = 0.1774 mas
Variability ellipse position angle = 9.1 deg
Equivalent α-δ correlation = 0.19

Observed in only 6 session(s)

Quarterly time series for 1221+071 (2026a, 4 global solutions)

Data

Right ascension: 185.9776012923276°
Declination: 6.8340478253085°
No. sessions: 6
No. delays: 476
Defining: No
RMS(α cos δ) = 0.1726 mas
RMS(δ) = 0.2567 mas
Variability ellipse semimajor axis = 0.2588 mas
Variability ellipse semiminor axis = 0.1694 mas
Variability ellipse position angle = -9.7 deg
Equivalent α-δ correlation = -0.14

Observed in only 6 session(s)