Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1540+180 (2026b, independent mode)

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

Right ascension: 235.5814171039145°
Declination: 17.9354935370898°
No. sessions: 2
No. delays: 218
Defining: No
RMS(α cos δ) = 0.2293 mas
RMS(δ) = 0.3972 mas
Variability ellipse semimajor axis = 0.4601 mas
Variability ellipse semiminor axis = 0.0366 mas
Variability ellipse position angle = -30.2 deg
Equivalent α-δ correlation = -1.02

Observed in only 2 session(s)

Quarterly time series for 1540+180 (2026b, 4 global solutions)

Data

Right ascension: 235.5814171946639°
Declination: 17.9354934111197°
No. sessions: 2
No. delays: 218
Defining: No
RMS(α cos δ) = 0.1282 mas
RMS(δ) = 0.1516 mas
Variability ellipse semimajor axis = 0.1987 mas
Variability ellipse semiminor axis = 0.0082 mas
Variability ellipse position angle = -40.2 deg
Equivalent α-δ correlation = -1.00

Observed in only 2 session(s)