Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1909+161 (2026b, independent mode)

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

Right ascension: 287.9927540114599°
Declination: 16.1963491440807°
No. sessions: 406
No. delays: 15301
Defining: Yes
RMS(α cos δ) = 520.0480 mas
RMS(δ) = 90.7364 mas
Variability ellipse semimajor axis = 525.1486 mas
Variability ellipse semiminor axis = 53.8699 mas
Variability ellipse position angle = -81.9 deg
Equivalent α-δ correlation = -0.80

Quarterly time series for 1909+161 (2026b, 4 global solutions)

Data

Right ascension: 287.9927391872218°
Declination: 16.1963514419190°
No. sessions: 366
No. delays: 15176
Defining: Yes
RMS(α cos δ) = 0.2707 mas
RMS(δ) = 0.2938 mas
Variability ellipse semimajor axis = 0.3097 mas
Variability ellipse semiminor axis = 0.2523 mas
Variability ellipse position angle = -33.0 deg
Equivalent α-δ correlation = -0.19