Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1642+183 (2026b, independent mode)

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

Right ascension: 251.2184682845521°
Declination: 18.2214552610499°
No. sessions: 6
No. delays: 392
Defining: No
RMS(α cos δ) = 0.4283 mas
RMS(δ) = 0.5815 mas
Variability ellipse semimajor axis = 0.6488 mas
Variability ellipse semiminor axis = 0.3172 mas
Variability ellipse position angle = -30.5 deg
Equivalent α-δ correlation = -0.56

Observed in only 6 session(s)

Quarterly time series for 1642+183 (2026b, 4 global solutions)

Data

Right ascension: 251.2184682570004°
Declination: 18.2214551989841°
No. sessions: 6
No. delays: 392
Defining: No
RMS(α cos δ) = 0.2621 mas
RMS(δ) = 0.3229 mas
Variability ellipse semimajor axis = 0.4066 mas
Variability ellipse semiminor axis = 0.0875 mas
Variability ellipse position angle = -38.4 deg
Equivalent α-δ correlation = -0.91

Observed in only 6 session(s)