Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1636+473 (2026b, independent mode)

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

Right ascension: 249.4380495856714°
Declination: 47.2927320568057°
No. sessions: 377
No. delays: 19176
Defining: Yes
RMS(α cos δ) = 183.8326 mas
RMS(δ) = 273.9131 mas
Variability ellipse semimajor axis = 294.6836 mas
Variability ellipse semiminor axis = 148.2714 mas
Variability ellipse position angle = 25.2 deg
Equivalent α-δ correlation = 0.50

Quarterly time series for 1636+473 (2026b, 4 global solutions)

Data

Right ascension: 249.4380440109443°
Declination: 47.2927308644506°
No. sessions: 368
No. delays: 19367
Defining: Yes
RMS(α cos δ) = 0.1610 mas
RMS(δ) = 0.2082 mas
Variability ellipse semimajor axis = 0.2106 mas
Variability ellipse semiminor axis = 0.1579 mas
Variability ellipse position angle = -13.0 deg
Equivalent α-δ correlation = -0.13