Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 0831+557 (2026b, independent mode)

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

Right ascension: 128.7287665061429°
Declination: 55.5725194953399°
No. sessions: 25
No. delays: 835
Defining: No
RMS(α cos δ) = 1.9330 mas
RMS(δ) = 0.9825 mas
Variability ellipse semimajor axis = 1.9769 mas
Variability ellipse semiminor axis = 0.8908 mas
Variability ellipse position angle = 76.4 deg
Equivalent α-δ correlation = 0.37

Observed in only 25 session(s)

Quarterly time series for 0831+557 (2026b, 4 global solutions)

Data

Right ascension: 128.7287666359492°
Declination: 55.5725195329555°
No. sessions: 24
No. delays: 832
Defining: No
RMS(α cos δ) = 0.6451 mas
RMS(δ) = 0.5397 mas
Variability ellipse semimajor axis = 0.6518 mas
Variability ellipse semiminor axis = 0.5315 mas
Variability ellipse position angle = 75.6 deg
Equivalent α-δ correlation = 0.10

Observed in only 24 session(s)