Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1815-553 (2026b, independent mode)

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

Right ascension: 274.9391647626271°
Declination: -55.3557625224834°
No. sessions: 266
No. delays: 2224
Defining: Yes
RMS(α cos δ) = 27.0525 mas
RMS(δ) = 11.6990 mas
Variability ellipse semimajor axis = 28.4209 mas
Variability ellipse semiminor axis = 7.8075 mas
Variability ellipse position angle = 71.4 deg
Equivalent α-δ correlation = 0.71

Quarterly time series for 1815-553 (2026b, 4 global solutions)

Data

Right ascension: 274.9391646678245°
Declination: -55.3557626016157°
No. sessions: 204
No. delays: 2038
Defining: Yes
RMS(α cos δ) = 0.5862 mas
RMS(δ) = 0.5233 mas
Variability ellipse semimajor axis = 0.5903 mas
Variability ellipse semiminor axis = 0.5186 mas
Variability ellipse position angle = -75.7 deg
Equivalent α-δ correlation = -0.06