Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1830+285 (2026a, independent mode)

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

Right ascension: 278.2091068557228°
Declination: 28.5599875390340°
No. sessions: 33
No. delays: 1775
Defining: No
RMS(α cos δ) = 0.4481 mas
RMS(δ) = 0.8117 mas
Variability ellipse semimajor axis = 0.8394 mas
Variability ellipse semiminor axis = 0.3938 mas
Variability ellipse position angle = -16.7 deg
Equivalent α-δ correlation = -0.42

Observed in only 33 session(s)

Quarterly time series for 1830+285 (2026a, 4 global solutions)

Data

Right ascension: 278.2091067868736°
Declination: 28.5599875738749°
No. sessions: 30
No. delays: 1567
Defining: No
RMS(α cos δ) = 0.2393 mas
RMS(δ) = 0.2567 mas
Variability ellipse semimajor axis = 0.3071 mas
Variability ellipse semiminor axis = 0.1699 mas
Variability ellipse position angle = -41.1 deg
Equivalent α-δ correlation = -0.53

Observed in only 30 session(s)