Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1554-643 (2026b, independent mode)

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

Right ascension: 239.7094032681058°
Declination: -64.5415421010131°
No. sessions: 24
No. delays: 205
Defining: No
RMS(α cos δ) = 536.5686 mas
RMS(δ) = 381.9049 mas
Variability ellipse semimajor axis = 626.4204 mas
Variability ellipse semiminor axis = 203.3587 mas
Variability ellipse position angle = -56.9 deg
Equivalent α-δ correlation = -0.78

Observed in only 24 session(s)

Quarterly time series for 1554-643 (2026b, 4 global solutions)

Data

Right ascension: 239.7095180767451°
Declination: -64.5415659550847°
No. sessions: 21
No. delays: 196
Defining: No
RMS(α cos δ) = 0.2923 mas
RMS(δ) = 0.5201 mas
Variability ellipse semimajor axis = 0.5232 mas
Variability ellipse semiminor axis = 0.2866 mas
Variability ellipse position angle = -7.5 deg
Equivalent α-δ correlation = -0.16

Observed in only 21 session(s)