Paris Observatory Geodetic VLBI Center

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

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

Right ascension: 278.2091068030928°
Declination: 28.5599876725825°
No. sessions: 30
No. delays: 1567
Defining: No
RMS(α cos δ) = 0.5814 mas
RMS(δ) = 0.9961 mas
Variability ellipse semimajor axis = 1.0223 mas
Variability ellipse semiminor axis = 0.5340 mas
Variability ellipse position angle = -15.2 deg
Equivalent α-δ correlation = -0.33

Observed in only 30 session(s)

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

Data

Right ascension: 278.2091067827791°
Declination: 28.5599875701871°
No. sessions: 30
No. delays: 1567
Defining: No
RMS(α cos δ) = 0.2416 mas
RMS(δ) = 0.2867 mas
Variability ellipse semimajor axis = 0.3424 mas
Variability ellipse semiminor axis = 0.1528 mas
Variability ellipse position angle = -37.6 deg
Equivalent α-δ correlation = -0.66

Observed in only 30 session(s)