Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1218+339 (2026a, independent mode)

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

Right ascension: 185.1411466547717°
Declination: 33.7200077719272°
No. sessions: 8
No. delays: 698
Defining: No
RMS(α cos δ) = 10.9139 mas
RMS(δ) = 0.5356 mas
Variability ellipse semimajor axis = 10.9153 mas
Variability ellipse semiminor axis = 0.5051 mas
Variability ellipse position angle = -89.0 deg
Equivalent α-δ correlation = -0.33

Observed in only 8 session(s)

Quarterly time series for 1218+339 (2026a, 4 global solutions)

Data

Right ascension: 185.1411480281972°
Declination: 33.7200077234484°
No. sessions: 8
No. delays: 698
Defining: No
RMS(α cos δ) = 0.3459 mas
RMS(δ) = 0.4809 mas
Variability ellipse semimajor axis = 0.5154 mas
Variability ellipse semiminor axis = 0.2920 mas
Variability ellipse position angle = -25.8 deg
Equivalent α-δ correlation = -0.43

Observed in only 8 session(s)