Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1656+477 (2026b, independent mode)

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

Right ascension: 254.5115812868657°
Declination: 47.6303408600116°
No. sessions: 29
No. delays: 1472
Defining: No
RMS(α cos δ) = 10.2599 mas
RMS(δ) = 43.2426 mas
Variability ellipse semimajor axis = 43.7392 mas
Variability ellipse semiminor axis = 7.8786 mas
Variability ellipse position angle = 8.7 deg
Equivalent α-δ correlation = 0.63

Observed in only 29 session(s)

Quarterly time series for 1656+477 (2026b, 4 global solutions)

Data

Right ascension: 254.5115816632889°
Declination: 47.6303418964498°
No. sessions: 29
No. delays: 1472
Defining: No
RMS(α cos δ) = 0.4041 mas
RMS(δ) = 0.4231 mas
Variability ellipse semimajor axis = 0.5030 mas
Variability ellipse semiminor axis = 0.2988 mas
Variability ellipse position angle = -42.2 deg
Equivalent α-δ correlation = -0.48

Observed in only 29 session(s)