Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1657-562 (2026b, independent mode)

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

Right ascension: 255.4368881127037°
Declination: -56.3655377752529°
No. sessions: 85
No. delays: 1037
Defining: No
RMS(α cos δ) = 324.8579 mas
RMS(δ) = 365.6732 mas
Variability ellipse semimajor axis = 467.9337 mas
Variability ellipse semiminor axis = 142.4347 mas
Variability ellipse position angle = 40.9 deg
Equivalent α-δ correlation = 0.83

Observed in only 85 session(s)

Quarterly time series for 1657-562 (2026b, 4 global solutions)

Data

Right ascension: 255.4369088593131°
Declination: -56.3655285211580°
No. sessions: 76
No. delays: 1010
Defining: No
RMS(α cos δ) = 0.3107 mas
RMS(δ) = 0.6718 mas
Variability ellipse semimajor axis = 0.6906 mas
Variability ellipse semiminor axis = 0.2664 mas
Variability ellipse position angle = -14.5 deg
Equivalent α-δ correlation = -0.47

Observed in only 76 session(s)