Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1815+531 (2026b, independent mode)

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

Right ascension: 274.2377949445175°
Declination: 53.1290277452502°
No. sessions: 6
No. delays: 365
Defining: No
RMS(α cos δ) = 0.4361 mas
RMS(δ) = 0.3541 mas
Variability ellipse semimajor axis = 0.4643 mas
Variability ellipse semiminor axis = 0.3163 mas
Variability ellipse position angle = -62.0 deg
Equivalent α-δ correlation = -0.31

Observed in only 6 session(s)

Quarterly time series for 1815+531 (2026b, 4 global solutions)

Data

Right ascension: 274.2377951783569°
Declination: 53.1290276848715°
No. sessions: 6
No. delays: 365
Defining: No
RMS(α cos δ) = 0.1638 mas
RMS(δ) = 0.1477 mas
Variability ellipse semimajor axis = 0.2065 mas
Variability ellipse semiminor axis = 0.0774 mas
Variability ellipse position angle = 48.9 deg
Equivalent α-δ correlation = 0.75

Observed in only 6 session(s)