Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1639-200 (2026b, independent mode)

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

Right ascension: 250.5220454240625°
Declination: -20.1235693712360°
No. sessions: 14
No. delays: 850
Defining: No
RMS(α cos δ) = 0.5717 mas
RMS(δ) = 1.1403 mas
Variability ellipse semimajor axis = 1.1897 mas
Variability ellipse semiminor axis = 0.4602 mas
Variability ellipse position angle = 18.0 deg
Equivalent α-δ correlation = 0.54

Observed in only 14 session(s)

Quarterly time series for 1639-200 (2026b, 4 global solutions)

Data

Right ascension: 250.5220454368701°
Declination: -20.1235693089239°
No. sessions: 14
No. delays: 850
Defining: No
RMS(α cos δ) = 0.2711 mas
RMS(δ) = 0.2392 mas
Variability ellipse semimajor axis = 0.2951 mas
Variability ellipse semiminor axis = 0.2088 mas
Variability ellipse position angle = 55.9 deg
Equivalent α-δ correlation = 0.31

Observed in only 14 session(s)