Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1218+304 (2026b, independent mode)

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

Right ascension: 185.3414274332562°
Declination: 30.1769887922462°
No. sessions: 4
No. delays: 225
Defining: No
RMS(α cos δ) = 1.0936 mas
RMS(δ) = 2.9700 mas
Variability ellipse semimajor axis = 3.1102 mas
Variability ellipse semiminor axis = 0.5867 mas
Variability ellipse position angle = 17.5 deg
Equivalent α-δ correlation = 0.83

Observed in only 4 session(s)

Quarterly time series for 1218+304 (2026b, 4 global solutions)

Data

Right ascension: 185.3414277218112°
Declination: 30.1769891380217°
No. sessions: 4
No. delays: 225
Defining: No
RMS(α cos δ) = 0.2844 mas
RMS(δ) = 0.6906 mas
Variability ellipse semimajor axis = 0.7311 mas
Variability ellipse semiminor axis = 0.1524 mas
Variability ellipse position angle = -19.6 deg
Equivalent α-δ correlation = -0.82

Observed in only 4 session(s)