Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1640-166 (2026b, independent mode)

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

Right ascension: 250.9443818060307°
Declination: -16.7631917899360°
No. sessions: 7
No. delays: 318
Defining: No
RMS(α cos δ) = 17.5716 mas
RMS(δ) = 37.7108 mas
Variability ellipse semimajor axis = 41.8805 mas
Variability ellipse semiminor axis = 4.8072 mas
Variability ellipse position angle = -25.6 deg
Equivalent α-δ correlation = -1.05

Observed in only 7 session(s)

Quarterly time series for 1640-166 (2026b, 4 global solutions)

Data

Right ascension: 250.9443804627763°
Declination: -16.7631906964713°
No. sessions: 7
No. delays: 318
Defining: No
RMS(α cos δ) = 0.3616 mas
RMS(δ) = 0.1285 mas
Variability ellipse semimajor axis = 0.3618 mas
Variability ellipse semiminor axis = 0.1280 mas
Variability ellipse position angle = 88.0 deg
Equivalent α-δ correlation = 0.08

Observed in only 7 session(s)