Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1830+074 (2026a, independent mode)

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

Right ascension: 278.1749545427297°
Declination: 7.5319796145822°
No. sessions: 5
No. delays: 505
Defining: No
RMS(α cos δ) = 0.2329 mas
RMS(δ) = 0.3787 mas
Variability ellipse semimajor axis = 0.3879 mas
Variability ellipse semiminor axis = 0.2171 mas
Variability ellipse position angle = 15.2 deg
Equivalent α-δ correlation = 0.30

Observed in only 5 session(s)

Quarterly time series for 1830+074 (2026a, 4 global solutions)

Data

Right ascension: 278.1749545210727°
Declination: 7.5319795819490°
No. sessions: 5
No. delays: 505
Defining: No
RMS(α cos δ) = 0.0810 mas
RMS(δ) = 0.1745 mas
Variability ellipse semimajor axis = 0.1751 mas
Variability ellipse semiminor axis = 0.0798 mas
Variability ellipse position angle = -5.1 deg
Equivalent α-δ correlation = -0.15

Observed in only 5 session(s)