Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1520+437 (2026a, independent mode)

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

Right ascension: 230.4567362646993°
Declination: 43.6109124986228°
No. sessions: 453
No. delays: 20709
Defining: Yes
RMS(α cos δ) = 274.6213 mas
RMS(δ) = 324.4263 mas
Variability ellipse semimajor axis = 397.7366 mas
Variability ellipse semiminor axis = 149.9163 mas
Variability ellipse position angle = 38.6 deg
Equivalent α-δ correlation = 0.74

Quarterly time series for 1520+437 (2026a, 4 global solutions)

Data

Right ascension: 230.4567245174367°
Declination: 43.6109078327875°
No. sessions: 421
No. delays: 20535
Defining: Yes
RMS(α cos δ) = 0.1808 mas
RMS(δ) = 0.2680 mas
Variability ellipse semimajor axis = 0.2805 mas
Variability ellipse semiminor axis = 0.1608 mas
Variability ellipse position angle = -21.0 deg
Equivalent α-δ correlation = -0.37