Paris Observatory Geodetic VLBI Center

Radio source coordinate time series for 1646+499 (2026b, independent mode)

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

Right ascension: 251.8954663676234°
Declination: 49.8334965988257°
No. sessions: 5
No. delays: 418
Defining: No
RMS(α cos δ) = 0.2059 mas
RMS(δ) = 0.2582 mas
Variability ellipse semimajor axis = 0.2999 mas
Variability ellipse semiminor axis = 0.1383 mas
Variability ellipse position angle = -34.9 deg
Equivalent α-δ correlation = -0.63

Observed in only 5 session(s)

Quarterly time series for 1646+499 (2026b, 4 global solutions)

Data

Right ascension: 251.8954662675525°
Declination: 49.8334966524664°
No. sessions: 5
No. delays: 418
Defining: No
RMS(α cos δ) = 0.0830 mas
RMS(δ) = 0.1643 mas
Variability ellipse semimajor axis = 0.1843 mas
Variability ellipse semiminor axis = 0.0087 mas
Variability ellipse position angle = -26.8 deg
Equivalent α-δ correlation = -1.01

Observed in only 5 session(s)