Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1640-039 (2026b, independent mode)

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

Right ascension: 250.8605069864998°
Declination: -4.0482630908699°
No. sessions: 6
No. delays: 601
Defining: No
RMS(α cos δ) = 0.3091 mas
RMS(δ) = 0.5111 mas
Variability ellipse semimajor axis = 0.5244 mas
Variability ellipse semiminor axis = 0.2859 mas
Variability ellipse position angle = 15.4 deg
Equivalent α-δ correlation = 0.32

Observed in only 6 session(s)

Quarterly time series for 1640-039 (2026b, 4 global solutions)

Data

Right ascension: 250.8605069033382°
Declination: -4.0482633056565°
No. sessions: 6
No. delays: 601
Defining: No
RMS(α cos δ) = 0.1667 mas
RMS(δ) = 0.1073 mas
Variability ellipse semimajor axis = 0.1784 mas
Variability ellipse semiminor axis = 0.0864 mas
Variability ellipse position angle = -65.9 deg
Equivalent α-δ correlation = -0.51

Observed in only 6 session(s)