Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1637+826 (2026a, independent mode)

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

Right ascension: 248.1332207822169°
Declination: 82.5378930687515°
No. sessions: 415
No. delays: 21050
Defining: No
RMS(α cos δ) = 61.3548 mas
RMS(δ) = 360.4338 mas
Variability ellipse semimajor axis = 360.4339 mas
Variability ellipse semiminor axis = 61.3540 mas
Variability ellipse position angle = -0.0 deg
Equivalent α-δ correlation = -0.01

Quarterly time series for 1637+826 (2026a, 4 global solutions)

Data

Right ascension: 248.1332080862301°
Declination: 82.5378888767766°
No. sessions: 378
No. delays: 19607
Defining: No
RMS(α cos δ) = 0.2004 mas
RMS(δ) = 0.1494 mas
Variability ellipse semimajor axis = 0.2063 mas
Variability ellipse semiminor axis = 0.1411 mas
Variability ellipse position angle = -70.9 deg
Equivalent α-δ correlation = -0.23