Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1830+139 (2026b, independent mode)

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

Right ascension: 278.1811295861051°
Declination: 13.9623335788599°
No. sessions: 9
No. delays: 617
Defining: No
RMS(α cos δ) = 0.3549 mas
RMS(δ) = 0.4597 mas
Variability ellipse semimajor axis = 0.5373 mas
Variability ellipse semiminor axis = 0.2203 mas
Variability ellipse position angle = -34.5 deg
Equivalent α-δ correlation = -0.69

Observed in only 9 session(s)

Quarterly time series for 1830+139 (2026b, 4 global solutions)

Data

Right ascension: 278.1811295880655°
Declination: 13.9623334464017°
No. sessions: 9
No. delays: 617
Defining: No
RMS(α cos δ) = 0.1565 mas
RMS(δ) = 0.3497 mas
Variability ellipse semimajor axis = 0.3660 mas
Variability ellipse semiminor axis = 0.1132 mas
Variability ellipse position angle = -18.0 deg
Equivalent α-δ correlation = -0.65

Observed in only 9 session(s)